Full SAT Biology Practice Test 1: Part A

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Question 20 questions

Time 15 minutes

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1. This organ secretes growth hormone (GH).

A. Thyroid
B. Pancreas
C. Parathyroid
D. Adrenal medulla
E. Anterior pituitary

2. This organ secretes thyroxine.

A. Thyroid
B. Pancreas
C. Parathyroid
D. Adrenal medulla
E. Anterior pituitary

3. This organ secretes the hormone responsible for the flight-or-flight response.

A. Thyroid
B. Pancreas
C. Parathyroid
D. Adrenal medulla
E. Anterior pituitary

4. This organ secretes a hormone that causes the liver to break down glycogen.

A. Thyroid
B. Pancreas
C. Parathyroid
D. Adrenal medulla
E. Anterior pituitary

5. Crossing over occurs in this phase.

A. Anaphase I
B. Prophase I
C. Anaphase II
D. Prophase II
E. Metaphase I

6. Homologous chromosomes separate in this phase.

A. Anaphase I
B. Prophase I
C. Anaphase II
D. Prophase II
E. Metaphase I

7. Sister chromatids separate in this phase.

A. Anaphase I
B. Prophase I
C. Anaphase II
D. Prophase II
E. Metaphase I

8. Question below refers to the following diagram of floral structures.

The site of fertilization

A.
B.
C.
D.
E.

9. Question below refers to the following diagram of floral structures.

The site of pollen production

A.
B.
C.
D.
E.

10. Question below refers to the following diagram of floral structures.

The site of pollen tube development

A.
B.
C.
D.
E.

11. Tissue that conducts sugars downward from the leaves

A. Xylem
B. Phloem
C. Cambium
D. Bark
E. Pith

12. Tissue that conducts water upward from the roots

A. Xylem
B. Phloem
C. Cambium
D. Bark
E. Pith

13. Tissue that gives rise to all vascular tissue

A. Xylem
B. Phloem
C. Cambium
D. Bark
E. Pith

14. Ground tissue with no specialized function

A. Xylem
B. Phloem
C. Cambium
D. Bark
E. Pith

15. Which tissue, formed during the gastrulation phase of embryonic development, later differentiates to form the nervous system?

A. Archenteron
B. Blastopore
C. Ectoderm
D. Endoderm
E. Mesoderm

16. What is the role of mRNA in protein synthesis?

A. To make up the structure of the ribosome
B. To carry amino acids to the ribosome
C. To catalyze bonds between nucleotides
D. To serve as a template for the synthesis of DNA
E. To carry information determining amino acid sequence

17. Oxygen gas (O2) is produced by plants and algae. What is the source of oxygen atoms in these molecules?

A. Water
B. Glucose
C. Carbon dioxide
D. Atmospheric oxygen
E. Atmospheric nitrogen

18. Which of the following describes a behavior of organisms of the same species?

A. Periodical cicadas that emerge the same year
B. Fish that become fertile during different seasons
C. Ungulates that mate frequently and yield sterile offspring
D. Rodents that mate frequently and yield no viable offspring
E. Tropical birds that court their mates with differing dances or songs

19. A mature gymnosperm will possess all of the following EXCEPT

A. seeds
B. leaves
C. flowers
D. vascular tissue
E. woody growth

20. Which of the following patterns of inheritance describes interactions between multiple genes?

A. Epistasis
B. Sex linkage
C. Codominance
D. Simple dominance
E. Homozygous recessive