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WorksheetsHomeostasis Unit Test Review
Total questions: 173
Worksheet time: 3hrs 23mins
Which type of respiration produces 36 ATP molecules?
Aerobic
Anaerobic
Both
Which type of respiration uses oxygen?
aerobic
anaerobic
both
Which type of respiration produces only 2 ATP molecules?
aerobic
anaerobic
both
Which type of respiration occurs in the absence of oxygen?
aerobic
anaerobic
both
Which process produces more energy?
aerobic
anaerobic
both
Glucose --> CO2 + Lactic Acid OR Alcohol + 2 ATP
aerobic
anaerobic
both
What happens if a population grows past its carrying capacity?
The population keeps growing
The population starts to die off
The entire species will go extinct
The carrying capacity just increases
What is the term for the maximum number of individuals that an environment can support over a long period of time?
carrying capacity
emigration
immigration
population density
What is the carrying capacity of the graph?
around 500
more than 800
less than 300
around 700
Which of the following is a biotic factor that would affect the carrying capacity of a population?
Soil
Predator
Rainfall
Sunlight
What are factors that affect carrying capacity?
Biotic only
Biotic and abiotic
Depends on the ecosystem
Abiotic only
Carrying capacity is the ____ number of individuals that can fit in an area.
average
minimum
maximum
least
If a population is below its carrying capacity, the population will ___
decrease
stay the same
increase
Which three things must a plant have to perform photosynthesis and make its own food?
Glucose, Oxygen, Sunlight
CO2, Oxygen, Sunlight
CO2, Water, Sunlight
Oxygen, Water, Sunlight
Which part of a plant cell is responsible for carrying out photosynthesis?
mitochondria
cell membrane
nucleus
chloroplasts
Which pigment in plants is responsible for their green color and helps in photosynthesis?
Monophyll
Chlorophyll
Epiphyll
Glorophyll
What are the raw materials (reactants) of photosynthesis?
Which of the following is the correct equation for PHOTOSYNTHESIS?
CO2 + light + H2O --> O2 + Sugar
CO2 + O2 + H2O --> Light+ Sugar
CO2 + sugar + H2O --> O2 + light
O2 + light + H2O --> CO2 + Sugar
What is the main goal of cellular respiration?
to produce water
to produce ATP
to produce glucose
to produce oxygen
Which of the following substances are produced during cellular respiration?
ATP
Carbon dioxide
Water
All of these are produced during cellular respiration
Which process generates the highest amount of ATP from one molecule of glucose?
lactic acid fermentation
aerobic respiration
alcoholic fermentation
all are about the same
What happens when a phosphate group is taken away from an ATP molecule?
a substantial amount of energy is released
an enzyme is formed
energy is stored
activation energy is increased
Which organisms carry out the process of cellular respiration?
Only organisms that cannot perform photosynthesis
Both autotrophs and heterotrophs
Only before plants can photosynthesize
Only animals
Which organelle in a cell is known as the powerhouse because it produces energy?
nucleus
mitochondria
ribosomes
lysosomes
Fermentation can produce alcohol or _____________ acid. What is the other type of acid produced during fermentation?
lactic
sulfuric
hydrochloric
acetic
Which gas is released as a waste product during cellular respiration?
oxygen
carbon dioxide
nitrogen
methane
How many ATP molecules are produced during glycolysis?
34 ATPs
2 ATPs
17 ATPs
38 ATPs
Which of the following statements correctly describes anaerobic respiration?
Oxygen is not used.
Oxygen is used.
How can energy from the sun be transferred to animals?
The sun's energy is transformed into food by plants, animals eat plants as food so that they can transform that food into energy.
Plants produced energy through photosynthesis, animals that eat that energy can produce food.
Plants transformed energy of the sun into gases that animals can breath in to use as energy through respiration.
Animals are able to use energy from the sun by eating the plants that provides energy for the animals.
Which process does this chemical formula represent?
Cellular Respiration
Which process does this chemical formula represent?
Cellular Respiration
Which process occurs inside of mitochondria?
Cellular Respiration
Identify the process.
PRODUCT: ATP
Cellular Respiration
Identify the process.
REACTANT: WATER (H2O)
Cellular Respiration
Identify the process.
REACTANT: CARBON DIOXIDE (CO2)
Cellular Respiration
Identify the process.
REACTANT: GLUCOSE (C6H12O6)
Cellular Respiration
Which statement below is CORRECT?
Plants only perform photosynthesis.
Plants only perform cellular respiration.
Plants perform both photosynthesis and cellular respiration.
What are the REACTANTS of CELLULAR RESPIRATION?
ATP
Carbon dioxide
Glucose
Oxygen
Water
Which organelle captures energy from the sunlight and uses it to produce food in plant cells?
mitochodria
cell membrane
chloroplast
centrioles
What is diffusion?
when molecules move
when molecules move from a high concentration to a low.
no movement
molecules move everywhere
Semi-permeable means
some things can pass through, other things can't
the concentration levels are different
partially permanent
all things can pass through
The cell membrane is responsible for keeping the cell's internal environment stable. What term describes this?
Homeostasis
Cell theory
Cell transport
Osmosis
The heater kicks on and the house warms up, so it kicks off. Then the house cools a bit and the heater kicks back on. This continues all day. It's a _____________ loop.
positive
negative
Body temperature regulation is an example of a ______________ loop
positive
negative
In a positive feedback loop, each action creates a consequence that _____________________ the other action.
decreases
has no effect on
amplifies
In a positive feedback loop, each action creates a consequence that _____________________ the other action.
decreases
has no effect on
amplifies
In a negative feedback loop, each action creates a consequence that _____________________ the other action.
decreases
has no effect on
amplifies
Positive feedback loops result in a system moving towards an extreme. Positive feedback is a process that _______ the effects of a change.
reduces
amplifies
has no effect
A feedback loop best fits which characteristic of life?
Cells
Organization
Homeostasis
Adaptation
If the plant population decreased, the amount of carbon would _________.
Stay the same
Increase
Decrease
This reservoir of carbon is all the water on Earth including in the clouds, oceans, rivers, streams, and underground water supplies.
Atmosphere
Biosphere
Hydrosphere
Lithosphere
This macromolecule provides the major energy source used by mitochondria (and all living things)
carbohydrate
lipids
protein
nucleic acid
This macromolecule make up cell membranes, store energy, and provide insulation
carbohydrate
lipids
protein
nucleic acid
This macromolecule carries hereditary information and instructions for building molecules
carbohydrate
lipids
protein
nucleic acid
A macromolecule with C, H, O, and N only, is a.....
carbohydrate
lipid
protein
nucleic acid
Sugar like glucose and starch belong to what group of macromolecules?
Carbohydrates
Lipids
Proteins
Nucleic Acids
Fats and oils belong to which macromolecule group?
Carbohydrates
Lipids
Proteins
Nucleic Acids
What is the function of a carbohydrate?
Insulation
A quick source of energy
Enzymes to speed up reactions
Holds genetic information
What is the function of a Nucleic Acid like DNA?
Quick source of energy
Insulation
Enzymes to speed up reactions
Holds genetic information
Carbohydrates are organic compounds because they contain_________ _________.
healthy foods
carbon atoms
poly saccharides
many elements
A ______________ is a large molecule.
Micromolecule
Polymer
Amino Acid
Macromolecule
Which macromolecule stores energy?
Carbohydrates
Proteins
Lipids/Fats
Nucleic Acids
Cellular Respiration happens in which organelle?
chloroplast
mitochondria
THINK before you answer:
which one is NOT a product of cellular respiration
Water (H2O)
ATP
CO2
Oxygen
The arrow is showing the fluid inside the cell that surrounds the cell organelles and gives the cell its shape. What is the arrow pointing to in the cell?
cytoplasm
mitochondria
ribosomes
nucleus
What organelle is this??
cell wall
chloroplast
mitochondria
nucleus
cell membrane
What does letter E represent in the trophic pyramid model?
Secondary consumers
Primary consumers
Producers
Tertiary consumers
Animals that only eat producers (also known as herbivores)
Producers
Primary Consumers
Secondary Consumers
Tertiary Consumers
What is the primary source of carbon emissions from burning fossil fuels?
Emissions from factories and industries
Burning of fossil fuels
Burning of wood and biomass
Transportation and vehicle exhaust
The consumers that are the top carnivores that eat other carnivores
Tertiary
Secondary
Primary
These eat secondary consumers.
primary consumers
primary producers
autotrophs
tertiary consumers
A substance that is more basic has a _____ pH than a substance that is acidic.
What does pH measure?
the amount of hydrogen (H+) ions
the amount of hydroxide (OH-) ions
amount of water
all of the above
This image demonstrates that...
There is a direct correlation with the atmospheric CO2 and the CO2 in seawater
That pH of the ocean increases as the atmospheric CO2 increases
That there is no correlation between pH of the ocean and atmospheric CO2
As the ocean becomes more acidic, the pH of the water...
In a more acidic ocean, the shells of organisms do not grow as easily.
True
False
What happens to the organisms with shells made of calcium carbonate in the ocean when the pH level drops below its optimal pH of 8.3?
Their shells get stronger
Their shells start to break down and get weaker
They die immediately
They starve to death
What is causing the pH to drop in the oceans?
Squid ink
Rising CO2 levels in the atmosphere
Kelp dying
Acid is being dumped into the ocean
What is causing an increase in CO2 in the atmosphere?
Ocean acidification
Dying kelp population
Human activity (burning fossil fuels, fires, etc.)
Hunting animals
What is diffusion?
Movement of particles from low to high concentration
When particles do not move
Movement of particles from areas where there is none to areas where there is a lot
Movement of particles from high to low concentration
What is the purpose of diffusion?
To maintain equilibrium/ homeostasis
To create unbalance
For particles to switch spots just because
To separate particles from each other
What happened to the egg's shell in the acidic solution?
It became stronger
It dissolved/ wasn't there anymore
It expanded
It stayed exactly the same
What process allowed food coloring to enter the egg in the 4.6 solution?
Cell transport
Active transport
Diffusion
Transfer
The part of the Earth that is made up of all the gases in Earth's air
atmosphere
biosphere
geosphere
hydrosphere
The part of the Earth that is made up of all solid and liquid water
atmosphere
biosphere
geosphere
hydrosphere
the part of the Earth that is made up of all rock and soil
atmosphere
biosphere
geosphere
hydrosphere
The part of the Earth that is made up of all living things
atmosphere
biosphere
geosphere
hydrosphere
Which Earth's systems includes humans?
atmosphere
biosphere
geosphere
hydrosphere
Which of the following is not a biotic factor in an ecosystem?
wind
algae
dead skunk
oak tree
In the mid 1900's, the wolves of Yellowstone were deeply affected by humans and their population significantly decreased-- making them endangered, and eventually removing them completely from the Yellowstone ecosystem. The removal of wolves, the top predator, caused what to happen to the biodiversity within Yellowstone?
A trophic cascade affected the entire food web in Yellowstone, causing some organisms to experience decreases, and others to grow rapidly.
Biodiversity increased when the wolves disappeared and more species were able to flourish without the wolves.
A trophic cascade irreversibly ruined the ecosystem in Yellowstone--destroying biodiversity forever.
The biodiversity of the park was not affected when the wolves were removed.
How did the kelp forest ecosystem change after sea otters were removed?
sea urchin population increased
the kelp population decreased
sea stars increased because there were more sea urchins to eat
the phytoplankton population decreased
A side-effect when a certain species that usually helps to keep the entire ecosystem balanced is reduced or removed. When their numbers are changed there is an ecological imbalance.
trophic level
trophic cascade
food web
food chain
According to the graph, what is causing the deer population to decrease
They got sick
The wolf population is decreasing
The wolf population increased
They ran out of food
An organism that obtains energy by eating other organisms.
Consumer
Producer
Decomposer
Detritivore
If producers in this food web have 2,000kCal of energy, how much of that would end up going to the herring (secondary consumers)?
200 kCal
20 kCal
2 kCal
0.2KCal
Animals that only eat producers (also known as herbivores)
Producers
Primary Consumers
Secondary Consumers
Tertiary Consumers
What is a keystone species?
A species that helps to hold an ecosystem together
A species that lives in or around rocks
Keys and stones have nothing to do with ecology
A keystone isn't a living thing, it's just a stone
What is a tropic cascade?
an ecological process triggered by the removal or addition of a top predator that causes changes throughout the food chain.
an ecological process triggered by the removal or addition of a top predator that causes no changes throughout the food chain.
an ecological process triggered by the removal or addition of a vegetation that causes no changes throughout the food chain.
an ecological process triggered by the removal or addition of a primary consumer that causes changes throughout the food chain.
Two arctic fox are fighting with a polar bear for a sea lion carcass. One fox distracts the bear while the other eats. What type of limiting factor is the polar bear?
Predator-Prey Relationships
Competition
Herbivory Effect
Weather
During which day did this population reach carrying capacity?
Day 2
Day 11
Day 23
Day 35
What is the independent variable?
how much salt put in the water
whether the object floats or sinks
What is the independent variable?
how far the ball rolls
the incline or height of the board
What is the independent variable?
the temperature
how the ball bounces
Sarah wanted to find out if the size of a car tire made it a smoother ride over bumps. She drove her car over the same bumpy road three times, with a different sized tire set each time, and observed how much water splashed out of a cup in her cupholder. What is the independent variable?
Size of tire
The amount of water that splashed out of the cup
Type of car
In the table, Bubbles is the ______________.
independent variable
dependent variable
Which of the following is the label for the independent variable.
Money Collected
Raising Money
Boxes Sold
None of the above
The X-axis of a graph shows which variable?
The Y-axis of a graph displays which variable?
Control Variable
Independent Variable
Dependent Variable
The variable that we measure in an experiment is known as the:
Genetic drift is change in the allele frequency of a population due to...
random chance
natural selection
non-random mating (sexual selection)
artificial selection
Genetic drift is change in the allele frequency of a population due to...
random chance
natural selection
non-random mating (sexual selection)
artificial selection
What is genetic drift?
A population for which the gene frequencies do not change
A change in allele frequencies due to selection
The addition or removal of alleles in a population due to individuals entering or leaving one population for another
A change in the gene pool due to chance
A few deer wander out of their native woods into a completely new park where no deer had ever been before. They go on to create an entirely new population. What is this an example of?
Genetic Drift
Natural Selection
What is homeostasis?
The process by which living organisms maintain a stable internal environment despite external changes.
A method of communication between cells in an organism.
The ability of an organism to adapt to its environment over time.
The process of breaking down food into energy.
What is carrying capacity?
The maximum population size of a species that the environment can sustain indefinitely.
The total number of species in a given area.
The amount of resources available in an ecosystem.
The rate at which a population can grow under ideal conditions.
What is biodiversity?
The total number of organisms in a given area.
The variety of life in a particular habitat or ecosystem, including the number of different species.
The study of how species interact with each other.
The process of evolution in different species.
What role do producers play in an ecosystem?
Producers, like plants, convert sunlight into energy through photosynthesis, forming the base of the food chain.
Producers are organisms that consume other organisms for energy.
Producers are responsible for decomposing organic matter in the ecosystem.
Producers are animals that rely on plants for food.
What is a biotic factor?
A non-living component of an ecosystem, such as rocks and water.
A living component of an ecosystem, such as plants, animals, and microorganisms.
A chemical substance that affects living organisms.
A physical feature of the environment, such as temperature and sunlight.
nitrogen fixing bacteria
Bacteria that change nitrogen into a form that plants can use
Bacteria that decompose organic matter
Bacteria that produce oxygen during photosynthesis
Bacteria that cause diseases in plants
quantitative data
Numerical data
Categorical data
Textual data
Graphical data
dependent variable
The variable that is controlled by the experimenter.
The variable that is manipulated in the experiment.
The data that is measured and whose outcome is unknown to the experimenter.
The variable that remains constant throughout the experiment.
Photosynthesis
Process used by plants to convert the energy from sunlight into glucose.
Process used by animals to convert food into energy.
Process used by plants to absorb water from the soil.
Process used by fungi to decompose organic matter.
Diffusion
The movement of molecules from a high concentration to a low concentration.
The process of molecules moving against a concentration gradient.
The random movement of molecules in a vacuum.
The transfer of heat through direct contact.
pH
A measurement of how acidic or basic a substance is
A scale for measuring temperature
A method for determining the density of liquids
A technique for measuring electrical conductivity
carbon cycle
The process by which carbon is absorbed by plants during photosynthesis
The movement of molecules containing carbon into and out of organisms and the environment
The conversion of carbon dioxide into oxygen by animals
The breakdown of carbon compounds in the soil by microorganisms
What type of feedback is shown in the blood clotting model?
Positive
Negative
Top-down effects of a trophic level being removed impacting the entire ecosystem
biodiversity
abiotic factors
homeostasis
trophic cascade
During child birth a woman's body over produces a hormone called oxytocin until the baby is born. What kind of feedback loop would this be?
Negative Feedback Loop
Positive Feedback Loop
Neutral Feedback Loop
Linear Feedback Loop
Where in the cell does cellular respiration occur?
Chloroplasts
Mitochondria
Nucleus
Cell Membrane
Which nutrient cycle requires bacteria in order for the nutrient to be available to plants and animals?
Carbon Cycle
Nitrogen Cycle
Water Cycle
