Font size
WorksheetsGeneral Biology Final Practice
Total questions: 169
Worksheet time: 2hrs 7mins
Researchers have found that a local squirrel population fluctuates from year to year, increasing one year and decreasing the next. Which of the following factors would cause the squirrel population to grow?
the birth rate is equal to the death rate
emigration is greater than immigration
the death rate is higher than the birth rate
the birth rate is greater than the death rate
Look at the graph titled Paramecium caudatum Growth. What is the carrying capacity of the test-tube environment as long as food is added?
about 10 paramecia
about 60 paramecia
about 40 paramecia
about 100 paramecia
All of the following are density-dependent factors that limit animal populations except:
weather
food competition
predation
mortality
Between which two points on the curve in the diagram above best represents exponential growth of a population?
A to E
A to C
B to D
C to E
All of the following statements concerning characteristics of predator-prey relationships are correct EXCEPT:
A rise in the population of prey is often followed by a rise in the population of predators.
A rise in the population of predators is followed by a decrease in the population of prey.
Camouflage is an adaptation that protects prey.
The population of predators most often eliminates the population of prey.
An example of a food web from the Florida Everglades is shown below. The butterfly orchid produces 10,000 joules of energy. How many joules of energy will be available to the grass carp (fish)?
1 joule
10 joules
100 joules
1000 joules
Which of the following is a tertiary consumer in the Everglades food web?
Grass carp
Eastern mud turtle
Southern leopard frog
Great blue heron
Most energy is lost from trophic level to trophic level in the form of:
Biomass
Oxygen
Carbon Dioxide
Heat (from metabolism)
The Yellowstone area contains organisms representing all trophic levels, including plants (producer), algae (producer), moss (producer), fungi (decomposer), blue jays (primary consumer), fish (primary consumer), and grizzly bears (primary and secondary consumer). Which sequence best represents the transfer of energy through Yellowstone trophic levels?
fungi to moss to algae to fish
blue jay to moss to fungi to plant
algae to fish to grizzly bear to fungi
plant to blue jay to algae to grizzly bear
In which trophic level is there the least energy available?
producer
primary consumer
secondary consumer
tertiary consumer
Which of the following best explains why there are seldom more than five trophic levels in a food chain?
Most carnivores function at more than one trophic level.
Trophic levels above this number contain too many individuals.
The ecosystem contains too much biomass.
Energy is lost from each trophic level.
Based on the diagram, which of the following best describes the most likely direct effect of a decline of the small fish population on the marine food web?
The jellyfish population will experience local extinction because of a lack of food resources.
The jellyfish population will increase because of decreased predation.
The jellyfish population will migrate to an area with more available habitat for eggs.
The jellyfish population will decrease from the increase in the sea turtle and tuna populations.
Forest fires can burn down all of the trees and plants living in an area. However, new growth can spring from the decaying organic matter left behind. What is the gradual sequential regrowth of a community of species after a forest fire?
adaptation
primary succession
pioneer succession
secondary succession
A biologist compares how different ecosystems undergo succession. She divides the series of events that happen during primary succession and secondary succession into three different stages. Which feature might be used to distinguish secondary succession from primary succession?
the lack of pioneer species in the second stage
the presence of pioneer species in the final stage
the presence of soil and organic matter in the first stage
the presence of trees and large plants in the final stage
Which of the following pictures represents the climax community?
A
B
C
D
Which of the following in not an abiotic factor in an ecosystem?
Sunlight
pH
Competition
Nutrient load
Which of the following is not a main reason for loss of species around the world?
Increased technology
Non-native species
Habitat loss
Hunting
Which is not a type of biodiversity?
Species
Ecosystem
Population
Genetic
All of the following statements about invasive exotic species are true EXCEPT:
They may compete with native species for food.
They may prey on native species.
They are generally introduced by human activity.
They tend to have low reproductive rates.
One advantage of biodiversity in an ecosystem is that it
guarantees that the largest organisms will dominate the area
ensures a large amount of identical genetic material
develops relationships between organisms that are always positive over long periods of time
increases the chance that some organisms will survive a major change in the environment
A large forested area is fragmented into small forest tracts separated by agricultural areas. This change will most likely lead to:
an increase in the population of top carnivores
a more stable regional climate
a decrease in the amount of edge habitat
a decrease in the gene flow within species of the original forest
Which biome is known for low rainfall and extreme temperature changes between day and night?
Desert
Tundra
Temperate forest
Grassland
Name two abiotic factors that help define a biome.
temperature
precipitation
predator-prey interactions
competition among herbivores
The biome with the greatest biodiversity is:
Taiga
Tropical rainforest
Grassland
Chaparral
Which option lists a major human impact on biodiversity along with two possible solutions?
Habitat destruction from deforestation; create protected areas and restore native vegetation
Seasonal migration of birds; increase hunting seasons and reduce parklands
Plate tectonics moving continents; build seawalls and expand fossil fuel extraction
Earth’s axial tilt; alter the tilt angle and increase pesticide applications
In the energy pyramid, what is the bottom level composed of?
Producers
First-Level Consumers
Second-Level Consumers
Third-Level Consumers
All the living things in an area
population
community
ecosystem
biome
biosphere
A group of the same species
population
community
ecosystem
biome
biosphere
All the living things AND non living things in an area
population
community
ecosystem
biome
biosphere
A group of similar ecosystems with the same general type of physical characteristics
population
community
ecosystem
biome
biosphere
Anywhere on Earth life exists
population
community
ecosystem
biome
biosphere
The study of how living things interact with each other and their environment
ecology
ecosystems
biology
zoology
Living or once living parts of the environment
biotic factors
abiotic factors
water
temperature
Non-living parts of the environment
biotic factors
abiotic factors
animals
plants
The role of an organism in an environment
habitat
ecology
niche
diet
The natural environment in which an organism lives
habitat
niche
diet
biotic factors
a close relationship between two species
ecosystem
symbiosis
ecology
zoology
A close relationship between two species in which BOTH organisms benefit
mutualism
commensalism
parasitism
predator prey
Image "B" shows more biodiversity than image "A". Why?
Because "B" shows more different species than image "A"
Because image "B" has less different species than "A"
"A" has a greater number of same species plants so this statement is wrong.
Both images show the same biodiversity
consists of all life on Earth and all parts of the Earth in which life exists, including land, water and the atmosphere
Biology
Biosphere
Biotic Factor
Ecology
the scientific study of interactions among organisms and between organisms and their physical environment
Ecology
Biogeochemical Cycle
Exponential Growth
Limiting Factor
any living part of the environment
habitat
abiotic factor
biotic factor
biosphere
any nonliving part of the environment
habitat
abiotic factor
biotic factor
ecology
the flow of energy in which elements pass from one organism into another and among parts of the biosphere through closed loops
logistic growth
exponential growth
biogeochemical cycle
nitrogen fixation
the process in which bacteria convert nitrogen gas into ammonia
nitrogen cycle
limiting nutrient
ecology
logistic growth
the nutrient whose supply limits productivity
nitrogen cycle
limiting nutrient
abiotic factor
biotic factor
the general place where an organism lives
biosphere
biogeochemical cycle
habitat
ecology
the larger a population gets, the faster it grows without limit
limiting nutrient
logistic growth
ecology
exponential growth
occurs when a populations growth slows and then stops, following a period of exponential growth
logistic growth
exponential growth
abiotic factor
biotic factor
Which statement is an example of how carbon moves through a food chain as part of the carbon cycle?
Producers release carbon dioxide, and consumers take it in.
Producers take in carbon dioxide, and consumers release it.
Producers take in carbon from the soil, and they release it when they decompose.
Producers release carbon into the soil, and consumers take it in from the soil.
The giant octopus lays 20,000 to 100,000 fertilized eggs. After hatching, most octopuses become prey to larger marine organisms, and less than 5% will reach adulthood to reproduce. One benefit of the giant octopus laying many eggs is to —
increase the average body size for surviving individuals to avoid predation
decrease competition between different octopus species to maintain resources in the population
increase the chance that more individuals will survive to maintain the population
decrease the likelihood of offspring being consumed by predators
Leaf-cutter ants harvest leaves and carry them to fungi that convert plant material into a usable form for the ants to digest. The fungi depend on the leaves for nutrients. The ants also produce an antibiotic on their bodies that helps protect the fungi from harmful bacteria. Which of these explains the relationship between the leaf-cutter ants and the fungi?
Predation, because the ants feed on the fungi
Mutualism, because both the ants and the fungi benefit from each other
Competition, because both organisms consume the same resource for energy
Commensalism, because the ants receive energy from the fungi and the fungi are unaffected
Students construct a graphic organizer to illustrate the different levels of biological organization.
Which terms does the X represent?
cell
organism
ecosystem
biosphere
The energy pyramid below shows the energy made available by producers.
Based on the energy flow between trophic levels in an energy pyramid, how much energy would be expected to be found at the secondary consumer level in this pyramid?
100 Joules
500 Joules
1,000 Joules
50 Joules
Which statement provides the best explanation for the difference in biomass of organisms found at each trophic level?
Organisms at higher trophic level have less energy available to them than organism at lower trophic levels.
Organisms at higher trophic levels require smaller habitats that organisms at lower trophic levels.
Organisms at lower trophic levels provide less energy than organisms at higher trophic levels.
Organisms at lower trophic levels outcompete organisms at higher trophic levels.
The San Marcos salamander, Eurycea nana, is a light reddish-brown translucent salamander about 2–5 cm in length. E. nana is found only in Spring Lake and a portion of the San Marcos River.
Which human activity would most likely decrease the ability of the salamanders to survive?
Increasing water consumption that decreases the flow of clean water from the springs that
feed the river
Public transportation that reduces the number of automobiles that contribute to pollution
runoff into the river
Tourism that helps fund the educational programs related to river ecosystem conservation
The addition of a new food source into the river that limits competition for resources
A remora is a fish that has an adhesive disk on the back of its head that it uses to attach to a large shark. When food floats away from the shark's mouth as it feeds. Drawings of a shark with a remora attached and a remora's adhesive disk are shown. The relationship of the remora and the shark is........
Predation
Parasitism
Commensalism
Competition
In a Central Texas grassland, the producers incorporate 12,000 kJ of energy from the sun into their tissues. About how much energy would be incorporated into the tissues of herbivores?
12,000 kJ
1,200 kJ
10,800 kJ
1,080 kJ
After a wheat field is cleared, wild grasses and weeds begin growing. This process is considered —
primary succession because pioneer species appear
primary succession because there are no large trees
secondary succession because soil is already present
secondary succession because the field contains inorganic matter
Biosphere
Organelle
Ecosystem
Community
Biosphere
The global ecological system integrating all living beings and their relationships, including their interactions with the elements of the lithosphere, geosphere, hydrosphere, and atmosphere.
A specific region of the Earth where life exists, characterized by its climate and geography.
The layer of gases surrounding the Earth, essential for life.
The study of living organisms and their interactions with the environment.
Ecology
The study of animal behavior in their natural habitat.
The branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
The science of classifying living organisms.
The study of the chemical processes within and relating to living organisms.
Biodiversity
The total number of species in a given area.
The variety of life in the world or in a particular habitat or ecosystem.
The study of interactions between organisms and their environment.
The process by which species evolve over time.
Mutualism
Symbiosis that is beneficial to both organisms involved.
A relationship where one organism benefits at the expense of another.
A type of interaction where both organisms are harmed.
A relationship that has no effect on either organism.
Producer
Organisms that consume organic compounds for energy.
Organisms, like plants and algae, that produce organic compounds from carbon dioxide through photosynthesis, serving as a food source for other organisms.
Organisms that decompose dead matter and recycle nutrients.
Organisms that rely on other organisms for food and energy.
Ecological Footprint
A measure of human demand on the Earth's ecosystems, the amount of natural capital used each year.
The total area of land required to sustain a population's resource consumption.
A metric used to calculate the biodiversity of an ecosystem.
The amount of carbon emissions produced by an individual or community.
Decomposer
Organisms that produce their own food through photosynthesis.
Organisms that break down dead organisms and waste materials into simpler substances.
Organisms that consume other living organisms for energy.
Organisms that live in extreme environments and do not require oxygen.
Biome
A large naturally occurring community of flora and fauna occupying a major habitat, e.g., forest or tundra.
A small area with a specific type of plant and animal life.
A type of climate characterized by high temperatures and humidity.
A region defined by its geological features and soil types.
Heterotroph
An organism that produces its own food from sunlight.
An organism deriving its nutritional requirements from complex organic substances.
An organism that can survive without any nutrients.
An organism that only consumes inorganic substances.
Autotroph
An organism that can only consume organic substances for energy.
An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.
An organism that relies on other organisms for food and energy.
An organism that can photosynthesize but cannot produce organic substances.
Climate
The weather conditions prevailing in an area in general or over a long period.
A short-term atmospheric condition in a specific area.
The average temperature of a specific location at a given time.
The study of weather patterns over a few days.
Consumer
Organisms that produce their own energy through photosynthesis.
Organisms that obtain energy by feeding on other organisms and their remains.
Organisms that decompose dead matter and recycle nutrients.
Organisms that primarily feed on plants.
Ecosystem
A biological community of interacting organisms and their physical environment.
A group of unrelated species living in the same area.
A collection of non-living things in a specific location.
A type of climate that supports various life forms.
Symbiosis
Interaction between two different organisms living in close physical association, typically to the advantage of both.
A competition between two species for the same resources.
A relationship where one organism benefits at the expense of another.
A random occurrence of organisms living in the same area.
Limiting Factor
An environmental factor that tends to limit population size.
A factor that increases population growth indefinitely.
A resource that is always available in abundance.
A condition that has no effect on population dynamics.
Commensalism
An association between two organisms in which one benefits and the other derives neither benefit nor harm.
A relationship where both organisms benefit from each other.
A relationship where one organism is harmed while the other benefits.
A neutral relationship where both organisms are unaffected.
Carrying Capacity
The maximum number of organisms that can be supported by an environment without causing harm to it.
The total number of species that can coexist in a habitat.
The average lifespan of organisms in a specific region.
The rate at which organisms reproduce in a given area.
Biomass
The total mass of organisms in a given area or volume.
The energy produced by living organisms.
The number of different species in an ecosystem.
The total volume of water in a habitat.
Community
An assemblage of different populations that live together in a defined area.
A group of individuals of the same species living in a specific habitat.
A collection of ecosystems interacting with each other.
A social group of people sharing a common culture.
Parasitism
A relationship between two organisms where one benefits at the expense of the other.
A mutual relationship where both organisms benefit.
A relationship where one organism is harmed and the other is unaffected.
A relationship where both organisms compete for resources.
What do you call an animal that only eats plants?
niche
carnivore
parasite
herbivore
predator
What is the general term used to describe the interaction between two different organisms that are living in close physical association?
photosynthesis
symbiosis
habitat
prey
omnivore
This term describes a consumer that feeds only on other consumers - in other words, the 'opposite' of vegan…
mutualsim
niche
prey
autotroph
carnivore
The animal in an ecological relationship that results in another animal being hunted, killed, and eaten…
autotroph
habitat
predator
herbivore
producer
The non-living part of the natural environment where an animal, plant or other organism lives…
niche
habitat
community
ecosystem
biosphere
What would you call an ecological symbiotic relationship that is helpful to both organisms involved?
An ecological symbiotic relationship between two organisms where one benefits and the other is harmed…
parasitism
herbivore
mutualism
carnivore
commensalism
This is the job or role of a specific organism within its habitat...
producer
prey
carnivore
niche
photosynthesis
What you would call an ecological symbiotic relationship between two organisms where one benefits, but the other is not helped or harmed?
mutualsim
predator
commensalism
parasitism
herbivory
The name of the process that producers use to make their own food…
respiration
commensalism
food chains
photosynthesis
symbiosis
This is transferred between organisms in a food chain and is represented by arrows…
nutrients
photosynthesis
niche
energy
food web
Another word for a plant or other producer that makes its own food using energy from sunlight…
photosynthesis
autotroph
consumer
carnivore
herbivore
Technically speaking, ALL food chains should end with these types of organisms so that nutrients can be recycled back into the habitat…
parasites
predators
herbivores
symbiotes
decomposers
How energy flows through an ecosystem
Food transfer within a habitat
Consumers going after other consumers
Who eats who within a community
What do you call the narrow band above and below the surface of the earth where life can be found?
atmosphere
soil
mantle
habitat
biosphere
What is the term used to describe ALL of the populations of ALL the species of living organisms within a particular habitat?
savanna
wildlife
community
habitat
ecosystem
The term used to include all of the living things PLUS all the non-living things together in a specific environment...
community
biosphere
habitat
population
ecosystem
This is the term used for the study of how living things interact with each other and their environment...
ecology
archeology
biology
astronomy
phrenology
What do you call the total count of a specific organism living within their natural habitat?
ecosystem
community
population
symbiosis
niche
Where does the energy come from initially for this food chain to work?
Plants
Which is an INFERENCE about this photo?
The person is wearing silver.
There is an ear of corn on the table.
The person is from the future.
The person has something covering their eyes.
You do an experiment to see if sleeping with a textbook under your pillow will improve your grades. Your dependent variable is...
Putting your textbook under your pillow
Your grades
How badly your neck hurts in the morning
How many hours you sleep
Living things are made up of units called
DNA
Cells
Homeostasis
Seeds
The combination of chemical reactions through
which an organism builds up or breaks down
materials as it carries out its life processes is called ...
absorption
metabolism
digestion
consumption
What is NOT an abiotic factor?
Moss
Water
Temperature
Soil
What would NOT be an example of a density dependent factor?
Predation
Parasitism
The average rainfall of a region
Communicable Disease
Which 2 points on the graph show that the population reached its carrying capacity?
A
B
C
D
E
A new deadly disease being introduced into a population will cause its carrying capacity to...
Increase
Decrease
Stay the same
What is the autotroph in this food web?
Rabbit
Snake
Grasshopper
Grass
What energy level would be at the bottom (the producers)?
1 kg
10 kg
100 kg
1000 kg
What is the term for a reproductively interactive group of animals?
Population
Community
Niche
Carrying Capacity
The rabbit population in Wisconsin has what type of growth Curve?
S Curve
J Curve
L Curve
U Curve
What type of species can withstand a wide variety of environmental conditions?
Generalist
Specialist
Fundamentalist
Realist
What is the term for a place an organism lives?
Species
Community
Niche
Habitat
What is the general term for the relationship between two organisms?
Symbiosis
Mutualism
Commensalism
Parasitism
What is the term that refers to an interaction where one species kills another species?
Predation
Displacemet
Symbiosis
Population
What is the term for the top-ranking member of a species?
Alpha
Omega
Beta
Delta
What is the term that investigates the interactions among organisms?
Biology
Ecology
Sociology
Aquaculture
What type of growth curve has an S shape?
Exponential Growth
Logistical Growth
Realized Growth
Migratory Growth
What is the term for the second ranking member of a species?
Alpha
Omega
Beta
Delta
What is the term for the lowest ranking member of a species?
Alpha
Omega
Beta
Delta
What is the term for a relationship where both organisms benefit?
Mutualism
Commensalism
Parasitism
Predation
What is the term for a relationship where one organism benefit and the other is neither helped or harmed?
Mutualism
Commensalism
Parasitism
Predation
What is the term for a relationship where one organisms hurts another organism?
Mutualism
Commensalism
Parasitism
Displacement
What type of growth curve has a J shape?
Exponential Growth
Logistical Growth
Realized Growth
Migratory Growth
Bacteria populations naturally have what shape of growth curve?
S Curve
J Curve
L Curve
U Curve
Which of the following habitats was not presented on in class?
Temperate Forest
Grassland Regions
Sandhill Regions
Tropical Forest
What type of species can withstand a narrow range of environmental conditions?
Generalist
Specialist
Fundamentalist
Realist
Which bird species did we discuss as an example for character displacement?
Wabler
Eagle
Chickity
Cardinals
In the Video about wolves, the reintroduction of wolves did all the following except?
Stabilized the soil near river edges
controlled the deer and elk population
Helped trees grow back taller
Helped increase the coyote population
What are the roles of test groups in scientific investigation?
Both are experimental groups, and each individually show the effects of an experiment.
One is the experimental group and one is the control group, and together they show the effects of an experiment.
Both are control groups, but only the control group shows the effects of an experiment.
Both are experimental groups, but only the experimental group shows the effects of an experiment.
Your friend, Alfred, conducts an experiment once and asks if his hypothesis should be classified as a theory. Which is the best response to Alfred’s question?
Yes, because his data supports the hypothesis.
Yes, but only if additional experiments show similar results.
No, because the experiment did not provide enough data to support the hypothesis.
No, because a theory is a highly reliable explanation that incorporates many well-tested hypotheses and evidences.
Cell theory has become the central organizing principle of biological science. Could this scientific theory ever become a scientific law?
Yes, if scientists decide that enough evidence supports the theory.
Yes, if the theory is shown to predict future events.
No, because a theory is a complex explanation that does not become a law.
No, because a theory can be proven correct while a law cannot be proven.
After a team of scientists completes an investigation, they submit an article about the investigation to a scientific journal. Before the journal publishes the article, they send it to other scientists for an anonymous, independent review. What is the purpose of this peer review?
To evaluate the methods, and validate the results of the investigation
To guarantee that the conclusions of the investigation are absolutely correct
To make sure the investigation has practical, economic benefits
To improve the appeal of the article to the general public
Testing hypotheses often involves designing experiments. Which of the following is the factor that is observed and measured in an experiment?
Control group
Experimental group
Dependent variable
Independent variable
During the earthworm behavior lab, we observed and recorded written data describing earthworm responses to different stimuli. What kind of data was this considered?
Quantitative measurements
Testing a control group.
Qualitative observations.
None of the above.
Tamar is talking about evolution with a friend. The friend says, “It’s just a theory, so I don’t believe it. When they prove it and it becomes the law of evolution, then maybe I’ll change my mind.” Which of these possible replies best describes scientific principles or the work of scientists?
Scientific theories do not become scientific laws; they are explanations for natural phenomena based on evidence.
Science always finds the right answer; the answers that scientists and researchers discover never change.
He should be wary of science because it is based on bias and opinion, not research and evidence.
Scientists always take each other at their word regarding experimental results, and the public should, too.
You wanted to study the organelles inside of a single-celled algae. To look at the mitochondria of the already dead algae, which is the best type of microscope you should use?
TEM (Transmission Electron Microscope)
SEM (Scanning Electron Microscope)
Compound Light Microscope
Dissecting Microscope
In the earthworm behavior lab, we were trying to determine how well earthworms taxis behavior to different stimuli. We used different types of stimuli (water, vinegar, and light) and observed the response of the earthworms. Which of the following best describes the independent variable in this experiment?
The response of the earthworms.
The positive and negative movement of the earthworms.
There was no independent variable.
The different types of stimuli.
Which of the following best describes the three parts of the cell theory?
All living things are made up of one or more cells, the cell is the basic unit of structure, and all cells are spontaneously generated.
All living things are made up of one or more cells, the cell is the basic unit of structure, and all cells come from pre-existing cells.
All living things are made up of more than two cells, the cell is the basic unit of structure, and all cells come from pre-existing cells.
None of the above.
Which of the following is a strong scientific question?
How do earthworms respond to different stimulus in their environment?
What is the best color?
Why are we here on Earth?
Which flower is the prettiest?
Honeybees are on the verge of extinction due to human activities and climate change, but are crucial to the survival of ecosystems because of their niche as pollinators. Scientists are frantically looking for ways to replicate how honeybees act as pollinators in an environment by looking at how much pollen they transfer from flower to flower, in case they do go extinct. Which type of microscope would be best for this type of research?
Compound Light Microscope
Dissecting Microscope
TEM (Transmission Electron Microscope)
SEM (Scanning Electron Microscope)
An enzyme is a molecule that speeds up a reaction. In living things pH affects an enzyme's ability to speed up a reaction. If the pH is too high or too low the enzymes stop functioning. Based on the graph, the enzyme pepsin functions best in what pH level?
1
8
7
3
Which of the following best summarizes why the technological invention of microscopes was important to biology?
It allowed for the development of cell theory by being able to investigate and collect data on cells.
It created a means of funding for cell research.
It created public interest and support for research.
It proved that cells could form spontaneously.
You wanted to study bacterial infections by investigating how colonies of living bacteria react around live human cells. Which is the best type of microscope you should use?
TEM
SEM
Compound Light Microscope
Dissecting Microscope
The graph shown represents data collected that compares Monarch butterfly appearance to Milkweed appearance in different areas. Based on the graph, which is the best conclusion can you draw?
The Milkweed and Monarch usually appear first in coastal areas.
The Milkweed and Monarch usually appear last in inland areas.
Monarch butterfly appearance usually comes after Milkweed appearance.
Monarch butterfly appearance on average will start before 150 days.monoa
Scientific law and a scientific theory are similar in that both
Are based on what we expect to happen based on natural history
Describe the events that cannot be observed in nature
Explain why events and conditions occur as they do in the natural world
Represent a large amount of scientific investigation and evidence
Viruses are not made of cells. Do most scientists consider a virus a living thing?
Yes, even though they are made of cells, they still exhibit characteristics of life without a host cell.
Yes, they are living things because they contain DNA.
No, they do not contain DNA or other essential macromolecules.
No, they are not made of cells and do not exhibit characteristics of life without a host cell.
Which of the following describes the best procedures when using/focusing a microscope?
Always start with the low objective lens, and only use the coarse adjust knob on the high objective lens.
Always start with the scanning objective lens, and only use the fine adjust knob on the high objective.
Always start with the low objective lens, and only use the fine adjust knob on the high objective lens.
Always start with the scanning objective lens, and only use the coarse adjust knob on the high objective lens.
What is the most basic (smallest) functional level of organization/life?
Organisms
Cells
Ecosystems
Biosphere
