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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