Full SAT Biology Practice Test 2: Part C

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Question 20 questions

Time 15 minutes

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1. In which structure does double fertilization occur?

A. 1
B. 2
C. 3
D. 4
E. 5

2. Mammals and sharks produce a compound called urea. What is the function of urea?

A. It raises the pH level of the blood.
B. It sends signals from cells that produce it to other organs.
C. It provides energy to some cells and tissues.
D. It prevents ammonia from building up in the body.
E. It eliminates water from the bloodstream.

3. Deoxygenated blood is pumped to the lungs through which parts of the heart?

A. 1, 2, and 6
B. 1, 2, and 7
C. 2, 4, and 6
D. 3, 4, and 5
E. 3, 4, and 8

4. Which of the following characteristics of an allele is required for it to increase in a population through natural selection?

A. Individuals with the allele are better able to find food.
B. Individuals with the allele are better able to resist disease.
C. Individuals with the allele have an increased ability to find and retain mates.
D. Individuals with the allele produce more offspring that reach adulthood.
E. Individuals with the allele have a longer lifespan than those without it.

5. Which of the following do animals and fungi have in common?

I. Autotrophic mode of nutrition

II. Extracellular digestion

III. Lack of cell walls

IV. Membrane-bound organelles

A. I and III
B. I and IV
C. II and III
D. II and IV
E. IV only

6. Which structure releases hormones that signal the tissue lining the uterus to thicken?

A. Corpus luteum
B. Developing follicle
C. Fallopian tube
D. Hypothalamus
E. Pituitary

7. In what order did the following types of organisms appear in the history of life on Earth?

I. Eukaryotes

II. Heterotrophic organisms

III. Metazoa

IV. Photosynthetic organisms

A. II, I, IV, III
B. II, I, III, IV
C. II, IV, I, III
D. IV, I, II, III
E. IV, II, I, III

8. Which of the following is required for speciation to take place?

A. Increased genetic variation
B. Random mating
C. Reduced gene flow
D. Geographic isolation
E. Mutation

9. Which structure allows photosynthesis to begin in a germinating dicot plant?

A. Cotyledon
B. Endosperm
C. Embryonic root
D. Apical meristem
E. Lateral meristem

10. Pepsinogen is secreted by the cells lining the stomach. In a low-pH solution, it is converted to an active enzyme, called pepsin. The purpose of producing pepsinogen instead of pepsin is to

A. preserve the active site
B. protect the secreting cells
C. raise the pH of the liquid inside the stomach
D. ensure that the enzyme is active when food is present
E. prevent the enzyme from breaking down carbohydrate

11. The diagram shows a seed. What is the function of the structures indicated by the arrows?

A. Defense
B. Dispersal
C. Camouflage
D. Water intake
E. Photosynthesis

12. Scientists examined the effects of adding nutrients to waters off the Eastern coast of the United States. The graph shows the nutrient added and the resulting algae counts at six locations. No nutrients were added in the control condition.

Which location experienced the greatest increase in algae in response to the addition of phosphorus?

A. 1
B. 2
C. 3
D. 4
E. 5

13. Scientists examined the effects of adding nutrients to waters off the Eastern coast of the United States. The graph shows the nutrient added and the resulting algae counts at six locations. No nutrients were added in the control condition.

At which locations was a sufficient supply of phosphorus present before the experiment was conducted?

A. 1 only
B. 1 and 2
C. 1, 2, and 3
D. 4 and 5
E. 5 only

14. Scientists examined the effects of adding nutrients to waters off the Eastern coast of the United States. The graph shows the nutrient added and the resulting algae counts at six locations. No nutrients were added in the control condition.

At which locations was nitrogen a limiting factor on algae growth?

A. 1 only
B. 1 and 2
C. 1, 2, and 3
D. 4 and 5
E. 5 only

15. Scientists examined the effects of adding nutrients to waters off the Eastern coast of the United States. The graph shows the nutrient added and the resulting algae counts at six locations. No nutrients were added in the control condition.

Algae incorporate nitrogen and phosphorus compounds in the environment into which of the following macromolecules?

I. Carbohydrates

II. DNA

III. Protein

A. I and II
B. I and III
C. III only
D. II and III
E. I, II, and III

16. In fruit flies, normal-sized, solid-colored body and red eyes are wild- type (normal) traits. Flies can be assumed to have these traits unless otherwise stated. A geneticist crosses fruit flies from a strain with purple eyes and with fruit flies from a strain with dwarf bodies. The results of the F1 cross are shown below. The scientist then crosses F1 flies together. Results from the F2 generation are included in the table.

GENERATIONNORMAL SIZE, PURPLE EYENORMAL SIZE, RED EYEDWARF, PURPLE EYEDWARF, RED EYETOTAL
F1074200742
F21023183395548/

The allele resulting in purple eyes is located near an allele resulting in streaks across the body, on the same chromosome. The streaked body phenotype is recessive. Crosses are performed with

A. 1 in 3
B. 1 in 4
C. 1 in 16
D. 3 in 16
E. 9 in 16

17. In fruit flies, normal-sized, solid-colored body and red eyes are wild- type (normal) traits. Flies can be assumed to have these traits unless otherwise stated. A geneticist crosses fruit flies from a strain with purple eyes and with fruit flies from a strain with dwarf bodies. The results of the F1 cross are shown below. The scientist then crosses F1 flies together. Results from the F2 generation are included in the table.

GENERATIONNORMAL SIZE, PURPLE EYENORMAL SIZE, RED EYEDWARF, PURPLE EYEDWARF, RED EYETOTAL
F1074200742
F21023183395548/

The allele resulting in purple eyes is located near an allele resulting in streaks across the body, on the same chromosome. The streaked body phenotype is recessive. Crosses are performed with

A. I and III
B. I and IV
C. II and III
D. II and IV
E. III only

18. In fruit flies, normal-sized, solid-colored body and red eyes are wild- type (normal) traits. Flies can be assumed to have these traits unless otherwise stated. A geneticist crosses fruit flies from a strain with purple eyes and with fruit flies from a strain with dwarf bodies. The results of the F1 cross are shown below. The scientist then crosses F1 flies together. Results from the F2 generation are included in the table.

GENERATIONNORMAL SIZE, PURPLE EYENORMAL SIZE, RED EYEDWARF, PURPLE EYEDWARF, RED EYETOTAL
F1074200742
F21023183395548/

The allele resulting in purple eyes is located near an allele resulting in streaks across the body, on the same chromosome. The streaked body phenotype is recessive. Crosses are performed with

A. I only
B. II only
C. I and II
D. II and IV
E. III and IV

19. In fruit flies, normal-sized, solid-colored body and red eyes are wild- type (normal) traits. Flies can be assumed to have these traits unless otherwise stated. A geneticist crosses fruit flies from a strain with purple eyes and with fruit flies from a strain with dwarf bodies. The results of the F1 cross are shown below. The scientist then crosses F1 flies together. Results from the F2 generation are included in the table.

GENERATIONNORMAL SIZE, PURPLE EYENORMAL SIZE, RED EYEDWARF, PURPLE EYEDWARF, RED EYETOTAL
F1074200742
F21023183395548/

The allele resulting in purple eyes is located near an allele resulting in streaks across the body, on the same chromosome. The streaked body phenotype is recessive. Crosses are performed with

A. I and II
B. I and III
C. I and IV
D. II and III
E. III and IV

20. In fruit flies, normal-sized, solid-colored body and red eyes are wild- type (normal) traits. Flies can be assumed to have these traits unless otherwise stated. A geneticist crosses fruit flies from a strain with purple eyes and with fruit flies from a strain with dwarf bodies. The results of the F1 cross are shown below. The scientist then crosses F1 flies together. Results from the F2 generation are included in the table.

GENERATIONNORMAL SIZE, PURPLE EYENORMAL SIZE, RED EYEDWARF, PURPLE EYEDWARF, RED EYETOTAL
F1074200742
F21023183395548/

The allele resulting in purple eyes is located near an allele resulting in streaks across the body, on the same chromosome. The streaked body phenotype is recessive. Crosses are performed with

A.
B.
C.
D.
E.