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WorksheetsScience Final Review
Total questions: 89
Worksheet time: 22hrs 15mins
An amoeba is a one-celled organism. The cell theory states that which of the following characteristics of amoebas must be true?
All amoebas have a regular, spherical shape
All amoebas move rapidly using a cila
All amoebas have organelles called chloroplasts
All amoebas come from other amoebas
A new species of living thing is discovered. Cell theory states that which of the following must be true about this new living thing?
It must be made up of one or more cells
Its cells must be able to make their own food
All its cells must perform the same function
Some of its cells must include a cell wall
What sort of evidence would support at least one of the compounds of the cell theory?
Rocks and other nobliving things are composed of cells
Cells are observed converting one form of energy into another
A microscope is necessary to make observation of nearly all cells
The origin of all cells observed can be traced to previous cells
What function in plant cells is comparable to an animal eating food?
Chloroplasts absorbing solar energy for cellular activities
Nuclei directing cellular activity from information held in DNA
Vacuoles storing waste, protecting the rest of the cell from contamination
Cell walls provinding rigidity and support for the cell structure
Plants that have deep roots, which extend, are able to reach cooler regions and absorb water that the roots of other plants can't reach. The adaptation is expected ina habitat with which of the following climatic conditions?
Cool and sunny
Hot and arid
Wet and cloudly
Cold and dark
Heredity is the passage of what from parent to offspring?
Genetic material
Oxygenated blood
Digestive enzymes
Connective tissue
A gene is best described as
the release of energy
a unit of heredity
the waste produced by cells
a collection of adaptions
The inherited traits of an organism are governed by -
leukocytes
genes
cytoplasm
enzymes
A gene is best described as
the release of energy
a unit of heredity
the waste produced by cells
a collection of adaptions
The hereditary information in animal and plant cells is located on the chromosomes, which the cells store in the -
vacuoles
nucleus
cytoplasm
ribosomes
What structure in a cell contains the genetic information?
Lysosome
Ribosome
Nucleus
Mitochondria
circulates blood through the body
(a)
provides structural support
(a)
breaks down food
(a)
filters fluids from body
(a)
includes eggs for females and sperm for males
(a)
hormones; helps control growth and metabolism
(a)
includes brain; sends and receives impulses
(a)
includes the skin; protects body's tissues
(a)
allows body to move
(a)
supplies blood with oxygen
(a)
Recessive genes are expressed under which of the following conditions?
Every time they are found in an organism
In green plants that reproduce through seeds
When asexual organisms produce a pair of offspring
Only in the dominant genes for the same trait
Heredity defines the passage of genetic material from
parent to child
sibling to sibling
mate to mate
predator to prey
Recessive traits are expressed
In one quarter of all offspring produced
always, in all members of the population
only when the dominant gene is not present
If the trait is carried by the male parent
A gene can be described as a unit of
metabolism
circulation
heredity
digestion
Genetic material is primarily responsible for
removing cell waste
governing inherited traits
creating new enzymes
participating in digestion
Heredity is best described as the
passage of gentic information from one generation to the next
movement of nutrients through the digestive system
creation of new blood cells to replace old blood cells
removal of waste products from processed within each cell
On what structure are genes located?
Chromosomes
Lysosomes
Ribosomes
Golgi bodies
Which of the following statements accurately denotes the frequency of expression of dominant and recessive traits?
Dominant traits = always / Recessive = never
Dominant traits = never / Recessive = sometimes
Dominant traits = always / Recessive = sometimes
Dominant traits = sometimes/ Recessive = sometimes
Roots grow downward in the soil in response to
gravity
sunlight
water
wind
When an animal is thirsty, it responds by
eating food
drinking water
blinking rapidly
sweating excessively
A crocodile quietly stalks its prey, a wildebeest, drinking at a water hole. The wildebeest suddenly sees the crocodile approaching. The wildebeest's body responds by
shedding thick fur
blinking rapidly
increasing the heart rate
requiring more food
A student places a plant in a dark room next to a growth lamp, while providing sufficient water and nutrients to ensure the plant's growth and survival. The plant will likely respond by
bending towards the lamp
wilting and eventually dying
shedding all of its leaves
increasing its rate of photosynthesis
When a plant wilts due to lack of water, it is responding to which of the following internal stimuli?
Decreased water pressure within the plant cells
Lack of nutrients carried by wate in plants
Decreased rate of photosynthesis in the stern
Increased storage of glucose in the leaves
Stunted growth of an animal can be a response to
overexposure to sunlight
lack of nutrients in diet
eating a plant-based diet
living in a hot climate
When an animal is infected with a virus, the body responds by creating conditions that are not favorable for the virus. It does this by
creating a sensation of hunger
raising the core body temperature
increasing sensitivity to sound
inhibiting the sense of balance
Which of the following lists includes cellular structures found in both plants and animal cells?
Chloroplasts, cell wall, cell membrane, cytoplasm
Vacuoles, cell membrance, nucleus, mitochondira
Cell membrane, cytoplasm, nucleus, cell wall
Chloroplasts, vacuoles, cell wall, cytoplasm
In an organism, the brain directs the body how to respond to stimuli from the environment. In a cell, this function is performed by the
cell membrane
chloroplasts
mitochondria
nucleus
Two unlabeled slides are viewed under a microscope. Slide A has cells with a visible nucleus, mitochondria, a cell membrane, a cell wall, and chloroplasts. Slibe B has cells with a visible nucleus, mitochondria, and a cell membrane. How should these slides be labeled?
Slide A, animal cells; Slide B, animal cells
Slide A, animal cells; Slide B, plant cells
Slide A, plant cells; Slide B, animal cells
Slide A, plant cells; Slide B, plant cells
Which of the following structures can help differentiate between a plant cell and an animal cell
Mitochondria
Nucleus
Chloroplast
Cell Membrane
Vacuoles are round organelles found in both plant and animal cells. Their primary function is to
produce food and energy for the cell
control the activities of the cell
transport materials between parts of the cell
store water, waste, and nutrients for the cell
Plant cells have a strong, rigid outer layer known as the cell wall. The function of the cell wall is to
help the cell maintain its shape under chaning water pressure
convert energy from sunlight into chemical energy
regulate the transfer of material into the cell
seperate genetic material from the rest of the cell
Plant cells have large, round vacuoles they primarily use for
energy production
water storage
protein synthesis
waste removal
The lysosome of a cell help to break down larger food molecules into smaller molecules. What organ system function in this manner
Digestive system
Nervous system
Lymphatic system
Integumentary system
Hepatocytes are the main type of cell in the liver. Hepatocytes combine to form the next more complex level or organization, called
an organ
a tissue
an organism
an organ system
Which of the following examples best represents the level of organization from least to most complex?
Lung cell --> lung tissue --> lung --> respiratory system --> human
Human --> lung tissue --> respiratory system -- > lung cell --> lung
Lung cell --> repsiratory system --> lung tissue --> lungs --> human
Respiratory System --> lungs --> body cell --> lung tissues --> human
The liver is a collection of tissues that metabolize nutrients in the body. The liver is an example of
an organism
a cell
an organ
an organ system
Neurons rapidly communicate information throughout the body. Neurons combine to form tissue in the organ known own as the brain. Neurons are classified as
cells
tissues
organs
organisms
The root of a plant help to anchor the plant to the soil, and are also used for food storage and water extraction. Roots are made up of tissues, such as xylem, phloem, and pith. In which level of organization would the roots of a plant most likely be classified
Cell
Organ System
Tissue
Organ
The root and shoot systems in plants work together to form a more complex organization known as
a cell
an organism
a tissue
an organ
In humans, the heart is an organ that pumps blood through blood vessels. The combination of the heart and blood vessels is classified as
a tissue
an organ
an organ system
an organism
Water moves inside plants using xylem, a structure made up of a collection of cells form the tube-like xylem. Xylem is classified as
a tissue
an organ
an organ system
an organism
The digestive system's main function is to
protect the body against infectious diseases
support and protect the body's organs
store nutrients until they are absorbed into the bones
break down food to be absorbed in the bloodstream
The endocrine system is responsible for communication in the body using
electrical signals
chemical hormones
soluble gases
digestive enzymes
Which body system forms a protective barrier between the external environment and the internal body systems?
Circulatory system
Respiratory system
Integumentary system
Endocrine system
Which body system is responsible for rapidly communicating information inside the body using electrical impulses?
Endocrine system
Integumentary system
Nervous system
Skeletal system
Which human body system is responsible for producing offspring?
Immune system
Reproductive system
Endocrine system
Excretory system
The main function of the excretory system is to
convert food into simpler substances for the body to absorb as nutrients
exchange gases, mostly carbon dioxide and oxygen, between the body and atmosphere
send signals in the form of hormones to the body to control growth, reporduction, and metabolism
filter water and fluids from the blood and remove waste products from the body
In a population of desert plants, the timing of their blooming varies greatly. Some bloom early in the morning, others at mid-day, and others after dark. What environmental pressure might be an advantage for those plants that bloom after dark?
There is an increase in the population of nocturnal pollinators
There is a decrease in the strength of solar radiation
There is an increase in herbivores that forge at night
There is a decrease in water for root absorption
Xylem is a plant tissue made up of elongated cells stacked end to end the length of the plant's stem. Which function is xylem specifically adapted to perform in plants?
Help prevent water loss
Exchange gases with the atmosphere
Capture sunlight for photosynthesis
Transport water from roots to leaves
Leopard seals are animals adapted to survive in the freezing condition of Antarctica. Individual leopard seals vary in their different traits. Which of the following variations would give a leopard seal the greatest chance of surviving in its harsh environment?
More spots on its coat
Thicker layer of blubber
More elongated head
Wider, flatter teeth
Mountain lions are large cats and the top predator in their habitat. A population of mountain lions may vary in several characteristics. If prey becomes more scarce, which variation would provide an advantage to the individuals that possessed it?
A spotted coat
Short fur
Long legs
Abundant whiskers
A farmer wants to increase the amount of food produced by corn crops. If the farmer selectively breeds the plants, for which trait should the farmer select?
Taller stems
Deeper roots
Resistance to pesticides
More cobs on plant
Peppered moths often hide on white-colored birch trees because they are similarly colored. Which of the following environmental changes would lead to the enhanced survival of darker moths?
Warm weather causes the birch tree to grow their leaves back early
Birch trees become covered in black ash from nearby factories
Heavy rainfall causes birch trees to grow taller than normal
Disease kills off more than half of the birch tree population
Which of the following characteristics will most likely be helpful in identifying a butterfly using a dichotomous key?
Migrates north every spring
Hangs on branches to eat
flutters wings faster on hot days
Hind wings have tall extensions
What factor contributes most to the sustainability of habitat?
Competition among large predators
Large variety of organisms
Presence of volcanic rock
Absence of bacterial species
Scientists studying two adjacent ecosystems observe different varieties of organisms in the two areas. All of the following factors would contribute to the differing varieties of organisms in these two habitats EXCEPT
climate
soil type
water resources
wind
The ecosystem with the greatest sustainability will be the one that has the
greatest variety of different organisms
highest annual precipitation
lowest population of harmful insects
fastest growing season for green plants
The Brazilian rain forest is an area with significant biodiversity. As the rain forest is replaced with agricultural land, it is reasonable to predict a reduction in
consumption of solar energy
sustainability over time
precipitation levels
average daily temperature
The ocean ecosystem has a high sustainability because of
strong, persistent currents
preadtor/prey relationships
green plants growing on the bottom
the large variety of different organisms
As species disappear from a prairie ecosystem, their disappearance results in decreased
sustainability of the prairie ecosystem
numbers of species in nearby ecosystems
likelihood of prairie wildfires brekaing out
numbers of offspring in remaining species
An example of a typical pioneer species, that is one that appears in the earliest stages of ecological succession, is
oak trees
spiders
weeds
humans
Ecological succession takes place in an area where
changes in the community's species composition occurs over time
an invasive species is artificially introduced
large organisms outcompete smaller organisms
weeds grow in a garden next to vegetables
Which of the following characteristics is shared by both primary and secondary consumers?
Uses the Sun's radiant energy to produce food
The first step in any food chain diagram
Eats only plants to gain needed energy
Ganis energy by eating other living things
At which level of the energy pyramid would most of the biomass be found?
Top Predator
Carnivore
Herbivores
Producers
Which of the organisms in the food chain transforms energy from the Sun into food?
Large Sharks
Marlin
Shrimp
Phytoplankton
Which portion of the diagram represents the level with the most available energy?
Producers
Herbivores
Carnivores
Top predators
Which of the following could possibly increase the total amount of energy the catfish population receives within its food chain?
An increase in the number of beetles
An increase in the number of hawks
A decrease in the number of plants
A decrease in the number of hawks
Which of the following correctly shows one path that energy would flow through this ecosystem?
Grasses --> Termite --> Monkey --> Eagle
Hyena --> Mongoose --> Mouse --> Grasses
Grasses --> Termite --> Grasshopper --> Monkey
Acacia trees --> Giraffe --> Lion --> Vulture
A reduction in deer population will have the effect in the amount of energy this ecosystem is able to provide for which of the following organisms
Rabbit
Mountain lion
Mouse
Hawk
In photosynthesis, plants convert what type of energy into what other type of energy?
Light energy into mechanical energy
Radiant energy into chemical energy
Chemical energy into heat energy
Mechanical energy into light energy
The energy plants gain through photosynthesis is stored in
oxygen
nitrogen
carbon dioxide
glucose
Which of the following is the most likely conclusion for the identity of the gas in the bubbles?
Carbon dioxide
Oxygen
Nitrogen
Hydrogen
Which of the following provides the energy needed for photosynthesis?
Water
The Sun
Plants
Atoms
Which of the following is an example that includes evidence of a chemical change?
A sample of zinc is placed in water and it settles to the bottom
A solid block of ice is heated, and it completely melts into a liquid
Sugar that is burned gives off an odor and turns brown and then black
A sample of a mineral is broken down into smaller pieces
What evidence would indicate that a chemical change has occurred?
The tablets dissolve in water
The water becomes cloudy
The water level increases slightly
Bubbles are given off
A physical change can be distinguished from a chemical change because this happens in a physical change:
The properties of the substance may change, but no new substances are produced
The properties of the substance change for only a short time but will return to their original state
An entirely new substance with new properties forms as a result of the change
A new substance is produced, but the new substance has properties identical to the original substance
Four mixtures are made by combining two clear liquids, and observations are made. Which mixture demonstrates that a chemical change has occurred?
Mixture 1: The combined liquids have a greater mass than either of the starting liquids
Mixture 2: The liquids, when mixed, produce a white solid, which settles to the bottom
Mixture 3: The mixture of the two liquids takes the shape of the container
Mixture 4: The denser of the two liquids lies below the other, less dense liquid
During digestion the body uses both physical and chemical changes to move and process food. Which of the following is an example of a physical change
Teethe breaking food down into smaller pieces
Protein is broken down into amino acids in the stomache
Enzymes breaking down carbohydrates into simple sugars
Hydrochloric acid breaking down fats in the stomach
