HESI A2 BIOLOGY PRACTICE
QUESTIONS WITH 100%
CORRECT ANSWERS GRADED A+
2026 VERSON!!
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
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
Species/catus
Beeswax is an example of what kind of molecule? - answer-Lipid, waxes oils and fats are
lipids
What takes place in a lysosome? - answer-Food is digested, the lysosome contains
digestive enzymes. The job of a lysosome is to digest food for cells and break down cells
waste products
QUESTIONS WITH 100%
CORRECT ANSWERS GRADED A+
2026 VERSON!!
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
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
Species/catus
Beeswax is an example of what kind of molecule? - answer-Lipid, waxes oils and fats are
lipids
What takes place in a lysosome? - answer-Food is digested, the lysosome contains
digestive enzymes. The job of a lysosome is to digest food for cells and break down cells
waste products
