HESI A2 BIOLOGY PRACTICE
QUESTIONS WITH ANSWERS
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
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.
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
Beeswax is an example of what kind of molecule? - CORRECT
ANSWER-Lipid, waxes oils and fats are lipids
What takes place in a lysosome? - CORRECT 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 ANSWERS
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
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.
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
Beeswax is an example of what kind of molecule? - CORRECT
ANSWER-Lipid, waxes oils and fats are lipids
What takes place in a lysosome? - CORRECT 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
