BIOLOGY HESI A2 EXAM QUESTIONS

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BIOLOGY HESI A2 (1) EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -25 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: In which phase of cell division do the chromosomes replicate?

• Prophase
• Interphase
• Anaphase
• Telophase

Answer:

• Interphase

Question 2: Which is not a step in the water cycle?

• Condensation
• Transpiration
• Nitrification
• Absorption

Answer:

• Nitrification

Question 3: Which statement regarding energy content is true?

• Decomposers > secondary consumers
• Primary consumers > producers
• Producers > secondary consumers
• Secondary consumers > primary consumers

Answer:

• Producers > secondary consumers

Question 4: Which organelle is responsible for protein synthesis?

• Mitchochondrion
• Vacuole
• Cell membrane
• Ribosome

Answer:

• Ribosome

Question 5: What takes place in a lysosome?

• Ribosomes are made
• Food is produced
• Water is stored
• Food is digested

Answer:

• Food is digested

Question 6: How should a researcher test the hypothesis that eating chocolate leads to acne in teenagers?

• Take 100 teenagers and feed each one a different amount of chocolate daily for 60 days; then

test for acne

• Take 100 teenagers and feed 50 two bars of chocolate daily for 60 days while the other 50 eat

no chocolate; then test for acne

• Take 1 teenager and feed him or her two bars of chocolate for 30 days and no chocolate for

30 days; then test for acne

• Take 100 teenagers and feed them no chocolate for 30 days and two bars of chocolate apiece

for 30 days; then test for acne

Answer:

• Take 100 teenagers and feed 50 two bars of chocolate daily for 60 days while the other 50 eat no

chocolate; then test for acne

Question 7: Which organism reproduces via binary fission?

• Mushroom
• Blue whale
• Rainbow trout
• Salmonella

Answer:

• Salmonella

Question 8: Physical factors such as temperature and pH can alter enzyme activity because they have an effect on the enzyme's ___

• acidity
• shape
• chemistry
• substrate

Answer:

• shape

Question 9: Which of these molecules contains glucose?

• Proteins
• Lipids
• Nucleic acids
• Carbohydrates

Answer:

• Carbohydrates

Question 10: Which statement is untrue?

• RNA is single-stranded
• RNA contains uracil
• DNA codes for proteins
• DNA cannot be altered

Answer:

• DNA cannot be altered

Question 11: Why are bacteria and blue-green algae often classified together?

• Both are gymnosperms
• Both are prokaryotes
• Both are autotrophs
• Both are pathogens

Answer:

• Both are prokaryotes

Question 12: Hemophilia is a sex-linked trait carried on the X chromosome. In an example of a male with hemophilia and a female carrier, what ratio of the offspring is predicted to have the disease?

A. 0 female : 2 male