TEAS Science Practice Test 3

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Question 1 of 10

1. Question

Which of the following is a byproduct produced during photosynthesis?

a. O₂

b. H₂O

c. CO₂

d. C₅H₁₀O₂

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Question 2 of 10

2. Question

Both DNA and RNA have which of the following in their molecular structures?

a. thymine

b. ribose sugar

c. phosphate groups

d. deoxyribose sugar

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Question 3 of 10

3. Question

Mutations are likely to have which of the following effects on a cell’s functioning?

a. have a mild effect on the nuclear membrane.

b. have a catastrophic effect on the cell’s functioning.

c. have no effect as the mutation may not be expressed.

d. effect only the proteins and lipids produced in the cell.

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Question 4 of 10

4. Question

The region on the DNA that codes for a protein is called which of the following?

a. gene

b. allele

c. introns

d. a nucleotide

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Question 5 of 10

5. Question

For eye color, brown eyes are dominant to blue eyes. A heterozygote and a homozygous dominant individual would have what colored eyes?

a. blue only

b. brown only

c. blue and brown

d. cannot be determined

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Question 6 of 10

6. Question

A homozygous recessive female is mated with a homozygous dominant male. Which of the following would be the genotype of the offspring?

a. AA

b. aa

c. Aa

d. cannot be determined

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Question 7 of 10

7. Question

Which of the following occurs during the S phase of interphase?

a. organelles are replicated

b. DNA is replicated

c. proteins are replicated

d. RNA is degraded

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Question 8 of 10

8. Question

Which of the following serves as the catalyst for initiating photosynthesis?

a. cartenoid

b. electrons

c. sunlight

d. chlorophyll

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Question 9 of 10

9. Question

What are the coefficients in the following chemical reaction?

____Mg(OH)₂ + ____HCl ⇒ _____MgCl₂ + _____H₂O

a. 1, 1, 1, 1

b. 1, 2, 2, 1

c. 2, 2, 1, 1

d. 1, 2, 1, 2

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Question 10 of 10

10. Question

What of the following compounds is reduced in the following chemical reaction?

6CO₂ + 6H₂O ⇒ C₆H₁₂O₆+ 6O₂

a. CO₂

b. O₂

c. H₂

d. C₆H₁₂O₆

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TEAS Science Practice Test 3

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