HESI A2 BIOLOGY PRACTICE
(CHAMBERLAIN) COMPREHENSIVE STUDY
GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ 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; speciesKingdom/animalia
Phylum/ChordataClass/mammalia Order/carnivora Family/felidae Genus/
FelisSpecies/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
◍ Which organism reproduces via binary fission?.
Answer: Salmonella
(CHAMBERLAIN) COMPREHENSIVE STUDY
GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ 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; speciesKingdom/animalia
Phylum/ChordataClass/mammalia Order/carnivora Family/felidae Genus/
FelisSpecies/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
◍ Which organism reproduces via binary fission?.
Answer: Salmonella
