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HESI A2 BIOLOGY PRACTICE
QUESTIONS 2026 QUESTIONS AND
ANSWERS | A+ GRADED | WITH
EXPERT SOLUTIONS
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
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What contains uracil? - correct answer-RNA
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
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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.
Which part of a plants reproductive system is of a different gender
than others? - correct answer-Stamen (male reproductive organ)
What kind of symbiosis exists between a pneumonia bacterium
and a human? - correct answer-Parasitism, one organism benefits
off another
The scientific name for a house cat is Felis catus. This indicates
the house cats what? - correct answer-Genus; species
Kingdom/animalia
Phylum/Chordata
Class/mammalia
Order/carnivora
Family/felidae
Genus/ Felis
Species/catus
HESI A2 BIOLOGY PRACTICE
QUESTIONS 2026 QUESTIONS AND
ANSWERS | A+ GRADED | WITH
EXPERT SOLUTIONS
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
, Page | 2
What contains uracil? - correct answer-RNA
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
, Page | 3
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.
Which part of a plants reproductive system is of a different gender
than others? - correct answer-Stamen (male reproductive organ)
What kind of symbiosis exists between a pneumonia bacterium
and a human? - correct answer-Parasitism, one organism benefits
off another
The scientific name for a house cat is Felis catus. This indicates
the house cats what? - correct answer-Genus; species
Kingdom/animalia
Phylum/Chordata
Class/mammalia
Order/carnivora
Family/felidae
Genus/ Felis
Species/catus
