WorksheetsPractice CAPT
Total questions: 36
Worksheet time: 20mins
Name
Class
Date
1.
A sprig of an Elodea aquarium plant was placed in a test tube. The test tube was then placed in sunlight for 6 hours. The bubbles of gas that are produced are composed mainly of
a)
carbon monoxide
b)
carbon dioxide
c)
oxygen
d)
nitrogen
2.
Which of the following properties of the Earth is the result of the processes of living things?
a)
The Earth’s oceans are salty.
b)
The Earth has magnetic poles.
c)
The Earth’s atmosphere contains a lot of oxygen.
d)
The Earth’s crust contains a lot of volcanic rock.
3.
The following equation represents the process of photosynthesis in green plants. What happens to most of the light energy during photosynthesis?
a)
It is transformed into heat energy.
b)
It is transformed into chemical energy.
c)
It is changed into carbon dioxide.
d)
It is changed into oxygen.
4.
Which statement about green plants is true?
a)
Most green plants do not need food.
b)
Most green plants take in food through their roots.
c)
Most green plants take in food through their leaves.
d)
Most green plants manufacture their own food.
5.
Which group would most likely contain living algae?
a)
producers
b)
first-order consumers
c)
second-order consumers
d)
decomposers
6.
According to the diagram, nutrients from dead organisms are released into the soil by the action of ________.
a)
producers
b)
first-order consumers
c)
third-order consumers
d)
decomposers
7.
The diagram shows part of an aquatic food web for a stable lake ecosystem in Connecticut. What is the source of energy for the algae?
a)
waves
b)
sunlight
c)
bacteria
d)
rotifers, water fleas and tadpoles
8.
The highest concentration of life exists in the top 200 meters of ocean water. The most important factor that influences this concentration of life is the
a)
amount of gases at the surface.
b)
amount of nutrients in the water.
c)
large number of predators at lower depths.
d)
amount of sunlight.
9.
In the longstanding war between coyotes and sheep ranchers in New Mexico, studies show that coyotes kill sheep and the percentage of sheep lost from herds in areas where coyotes have been exterminated is about the same as the percentage lost in areas where coyotes are still present. What is the most likely explanation for the similarity in the percentage of sheep lost in both areas?
a)
Coyotes were protecting sheep.
b)
The sheep died from overcrowding.
c)
Another predator was killing sheep.
d)
Coyotes were preying on sick or weak sheep.
10.
Sponges are sessile (permanently attached organisms) and rely on water currents for their survival. Which biological process(es) are directly affected by this way of life?
a)
reproduction and feeding
b)
response and growth
c)
development
d)
protein synthesis
11.
What is the relationship between the three structures in the diagram above?
a)
DNA is produced by protein which is produced in the cell.
b)
Protein is composed of DNA which is produced in the cell.
c)
DNA controls the production of protein in the cell.
d)
A cell is composed only of DNA and protein.
12.
A chromosome is best described as a
a)
gene that has more than one form.
b)
green cell found in many plants.
c)
strand of DNA containing genetic information.
d)
reproductive cell found in certain kinds of bacteria.
13.
In fruit flies, gray body color (G) is dominant over black body color (g). What kind of offspring would you expect from parents who are both heterozygous for body color (Gg x Gg)?
a)
0% gray, 100% black
b)
25% gray, 75% black
c)
75% gray, 25% black
d)
100% gray, 0% black
14.
Which statement about DNA is correct?
a)
A child’s DNA will be unrelated to the mother’s or father’s DNA.
b)
A child’s DNA will show similarities to both the mother’s and father’s DNA.
c)
A female child’s DNA will exactly match the mother’s DNA.
d)
A male child’s DNA will exactly match the father’s DNA.
15.
What technological application from the 1990s was advanced by the discovery of the structure of DNA in the 1950s?
a)
solar cells
b)
computer viruses
c)
the Internet
d)
crime solving
16.
Scientists have used genetic engineering techniques to attach insulin-producing genes to bacterial DNA. These bacteria produce large amounts of scarce human hormones. Scientists predict that hormones produced by bacteria will be inexpensive and will not cause allergic reactions. Scientists developed hormone-producing bacteria because they wanted to
a)
learn about bacteria.
b)
discover a cure for diseases.
c)
find a way to increase the supply of hormones for use by humans.
d)
compare the hormones produced by bacteria with hormones produced naturally.
17.
In the early days of antibiotic use, penicillin and sulfonamide were used to successfully treat a variety of bacterial infections. In later years, stronger antibiotics were needed because some bacteria were either resistant to or not affected by these same antibiotics. This situation is best explained
a)
by the lack of quality control in drug companies.
b)
as the result of poor nutrition.
c)
by doctors prescribing the wrong antibiotic.
d)
by the process of natural selection.
18.
Which of the following statements is supported by the fossil record shown in the diagram?
a)
Group C is now extinct.
b)
Group D has been in existence the longest.
c)
Group A is the most recent organism to come into existence.
d)
Group B was the most numerous organism 10 million years ago.
19.
Which of the following is usually most helpful in determining the age of these fossils?
a)
the size of the fossils
b)
the color of the fossils
c)
the amount of surface area of the rock layer in which the fossils are found
d)
the depth of the rock layer in which the fossils are found
20.
The scientists hypothesize that the four groups of fossilized organisms originated from a common ancestor. Which of the following would provide the best evidence that their hypothesis is correct?
a)
the number of fossils found in each group is similar.
b)
present-day members of the groups live in the same environment.
c)
fossils from each group were found in the same rock layer.
d)
members of the groups have similar physical structures.
21.
If an intestinal cell in a butterfly contains 24 chromosomes, a butterfly egg cell would contain
a)
3 chromosomes.
b)
6 chromosomes.
c)
12 chromosomes.
d)
24 chromosomes.
22.
Study the five organisms shown above. Which of the organisms have cells that have a nucleus but no cell wall?
a)
the mushroom and the dog
b)
the fern and the palm tree
c)
the dog and the fish
d)
the fern and the fish
23.
A certain organism has many cells, each containing a nucleus. If the organism makes its own food, it would be classified as
a)
a bacterium
b)
a fungus
c)
a plant
d)
an animal
24.
Which statement about plant and animal cells is true?
a)
Plant cells have a nucleus and a cell wall; animal cells do not have either of these structures.
b)
Plant cells have a cell wall and chloroplasts; animal cells do not have either of these structures.
c)
Plant cells have a cell wall and a cell membrane; animal cells have a cell wall but not a cell membrane.
d)
Plant cells have chloroplasts and mitochondria; animal cells have chloroplasts but do not have mitochondria.
25.
Mitochondria are used to produce energy for cells. Which type of cell would contain the most mitochondria?
a)
fat cells
b)
bone cells
c)
red blood cells
d)
muscle cells
26.
Under what conditions will a substance be likely to enter a cell through diffusion?
a)
when the substance is a particle of food
b)
when a molecule of the substance is very large
c)
when the concentration of the substance is greater outside the cell than inside
d)
when the concentration of the substance is greater inside the cell than outside
27.
Mitosis, the process by which the nucleus of a cell divides into two nuclei, each containing a complete set of the cell’s chromosomes, is essential to life because it
a)
contains four stages for gametes.
b)
maintains genetic continuity from one generation to the next.
c)
controls cell functions to ensure successful development.
d)
provides energy for the cells.
28.
The diagram below represents two human cells. These cells are a direct result of
a)
mitotic cell division.
b)
fertilization.
c)
sex linkage.
d)
gametogenesis
29.
The distribution of chromosomes in one type of cell division is shown in the diagram below.
a)
asexual reproduction
b)
mitosis
c)
meiosis
d)
vegetative propagation
30.
Body cells of fruit flies contain only 8 chromosomes, compared to human cells that contain 46. Scientists used studies of fruit flies to discover how egg and sperm cells (gametes) are formed. What did they observe?
a)
Body cells of the offspring flies had 16 chromosomes.
b)
Sperm cells from the male had 8 chromosomes.
c)
Egg cells from the female had 4 chromosomes.
d)
Body cells of the offspring flies had 4 chromosomes.
31.
Which of the following statements best explains why all animals need food in order to live?
a)
Body mass must be maintained, and food supplies the needed body mass.
b)
Cells, tissues, & organs require energy to carry out their tasks, & food provides the needed energy.
c)
A balanced diet is necessary to maintain strong bones and healthy teeth.
d)
Food contains essential vitamins and minerals bodies need in order to synthesize other nutrients.
32.
The chemical properties of an element are determined by its
a)
atomic mass.
b)
proton number.
c)
electron arrangement.
d)
atomic size.
33.
The atomic number of iron is 26, and the atomic mass is 55.847. What do these numbers mean in regard to protons, electrons and neutrons?
a)
There are 26 each of protons and neutrons, and the rest of the mass is the result of electrons.
b)
There are 26 protons and 26 electrons. Some atoms of iron have 29 neutrons; the .847 shows that there is more than one isotope of iron.
c)
There are 26 protons and 29 neutrons. Each particle has an atomic mass of 1.
d)
There are 26 protons and 26 neutrons. Since neutrons have slightly more mass than protons, the mass is greater than 52.
34.
What do all of the elements listed above have in common?
a)
They are metals.
b)
They are in the same period.
c)
They have the same number of electrons.
d)
They have four electrons in their outer shells.
35.
Which element in this group would be the least likely to react with other elements?
a)
Boron
b)
Carbon
c)
Neon
d)
Oxygen
36.
Which of the following is the most important factor in determining an element’s place in the periodic table?
a)
number of protons
b)
number of neutrons
c)
atomic charge
d)
atomic density
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