Hesi A2 Biology Practice Questions with
Correct Answers
Which organelle is responsible for protein synthesis? - ANSWER✔✔-Ribosome
Why is yeast used to make bread rise? - ANSWER✔✔-Yeast carries out fermentation, producing
ethanol and carbon dioxide
How is mitosis different from meiosis? - 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? - ANSWER✔✔-DNA
What is single stranded? - ANSWER✔✔-RNA
What contains uracil? - ANSWER✔✔-RNA
What codes for proteins? - 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? - ANSWER✔✔-50 percent
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
, 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? - ANSWER✔✔-It will swell and probably
burst/hypotonic situation
What is the purpose of phloem tissue in plant stems? - 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 - 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? - ANSWER✔✔-
Stamen (male reproductive organ)
What kind of symbiosis exists between a pneumonia bacterium and a human? - ANSWER✔✔-
Parasitism, one organism benefits off another
The scientific name for a house cat is Felis catus. This indicates the house cats what? -
ANSWER✔✔-Genus; species
Kingdom/animalia
Phylum/Chordata
Class/mammalia
Order/carnivora
Family/felidae
Genus/ Felis
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
Correct Answers
Which organelle is responsible for protein synthesis? - ANSWER✔✔-Ribosome
Why is yeast used to make bread rise? - ANSWER✔✔-Yeast carries out fermentation, producing
ethanol and carbon dioxide
How is mitosis different from meiosis? - 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? - ANSWER✔✔-DNA
What is single stranded? - ANSWER✔✔-RNA
What contains uracil? - ANSWER✔✔-RNA
What codes for proteins? - 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? - ANSWER✔✔-50 percent
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
, 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? - ANSWER✔✔-It will swell and probably
burst/hypotonic situation
What is the purpose of phloem tissue in plant stems? - 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 - 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? - ANSWER✔✔-
Stamen (male reproductive organ)
What kind of symbiosis exists between a pneumonia bacterium and a human? - ANSWER✔✔-
Parasitism, one organism benefits off another
The scientific name for a house cat is Felis catus. This indicates the house cats what? -
ANSWER✔✔-Genus; species
Kingdom/animalia
Phylum/Chordata
Class/mammalia
Order/carnivora
Family/felidae
Genus/ Felis
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
