1|Page
HESI A2 Biology Practice Questions And
Verified Answers 2026
Which organelle is responsible for protein synthesis? - correct-answer -Ribosome
Why is yeast used to make bread rise? - correct-answer -Yeast carries out
fermentation, producing ethanol and carbon dioxide
How is mitosis different from meiosis? - correct-answer -Meiosis creates sex cells
with half the # of chromosomes of the parent cell where as mitosis creates cells
that are exact copies of each other, down to the number of chromosomes
What can be altered? - correct-answer -DNA
What is single stranded? - correct-answer -RNA
What contains uracil? - correct-answer -RNA
, 2|Page
What codes for proteins? - correct-answer -DNA
Imagine that two parents both carry the recessive gene for cystic fibrosis. Any
homozygous recessive offspring will manifest the disease. What percentage of the
offspring is predicted to be carriers but not manifest the disease? - correct-answer
-50 percent
A cell is in a solution in which the concentration of solutes is higher inside the cell
than outside the cell. What would you expect to happen to the cell? - correct-
answer -It will swell and probably burst/hypotonic situation
What is the purpose of phloem tissue in plant stems? - correct-answer -It
conducts food throughout the plant, it is the system of narrow tubes that
transports sugars and other nutrients
Physical factors such as temperature and pH can alter enzyme activity because
they have an effect on the enzyme's - correct-answer -Shape, the shape of an
enzyme controls it's fit with its substrate.
HESI A2 Biology Practice Questions And
Verified Answers 2026
Which organelle is responsible for protein synthesis? - correct-answer -Ribosome
Why is yeast used to make bread rise? - correct-answer -Yeast carries out
fermentation, producing ethanol and carbon dioxide
How is mitosis different from meiosis? - correct-answer -Meiosis creates sex cells
with half the # of chromosomes of the parent cell where as mitosis creates cells
that are exact copies of each other, down to the number of chromosomes
What can be altered? - correct-answer -DNA
What is single stranded? - correct-answer -RNA
What contains uracil? - correct-answer -RNA
, 2|Page
What codes for proteins? - correct-answer -DNA
Imagine that two parents both carry the recessive gene for cystic fibrosis. Any
homozygous recessive offspring will manifest the disease. What percentage of the
offspring is predicted to be carriers but not manifest the disease? - correct-answer
-50 percent
A cell is in a solution in which the concentration of solutes is higher inside the cell
than outside the cell. What would you expect to happen to the cell? - correct-
answer -It will swell and probably burst/hypotonic situation
What is the purpose of phloem tissue in plant stems? - correct-answer -It
conducts food throughout the plant, it is the system of narrow tubes that
transports sugars and other nutrients
Physical factors such as temperature and pH can alter enzyme activity because
they have an effect on the enzyme's - correct-answer -Shape, the shape of an
enzyme controls it's fit with its substrate.
