Hesi A2 Biology Practice Questions
a) which is responsible for protein synthesis?correct answers - Ribosome
b) Why is yeast used to make bread rise?correct answers - Yeast carries out fermentation,
producing ethanol and carbon dioxide
c) How is mitosis different from meiosis?correct answers - 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
d) What can be altered?correct answers - DNA
e) What is single stranded?correct answers - RNA
f) What contains uracil?correct answers - RNA
g) What codes for proteins?correct answers - DNA
h) 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 answers - 50
percent
i) 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 answers - It will
swell and probably burst/hypotonic situation
, j) What is the purpose of phloem tissue in plant stems?correct answers - It conducts food
throughout the plant, it is the system of narrow tubes that transports sugars and other
nutrients
k) a
l) Physical factors such as temperature and pH can alter enzyme activity because they have
an effect on the enzyme'scorrect answers - Shape, the shape of an enzyme controls it's
fit with its substrate.
m) Which part of a plants reproductive system is of a different gender than others?correct
answers - Stamen (male reproductive organ)
n) What kind of symbiosis exists between a pneumonia bacterium and a human?correct
answers - Parasitism, one organism benefits off another
o) The scientific name for a house cat is Felis catus. This indicates the house cats
what?correct answers - Genus; species
p) Kingdom/animalia
q) Phylum/Chordata
r) Class/mammalia
s) Order/carnivora
t) Family/felidae
u) Genus/ Felis
v) Species/catus
w) Beeswax is an example of what kind of molecule?correct answers - Lipid, waxes oils and
fats are lipids
x) What takes place in a lysosome?correct answers - 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
a) which is responsible for protein synthesis?correct answers - Ribosome
b) Why is yeast used to make bread rise?correct answers - Yeast carries out fermentation,
producing ethanol and carbon dioxide
c) How is mitosis different from meiosis?correct answers - 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
d) What can be altered?correct answers - DNA
e) What is single stranded?correct answers - RNA
f) What contains uracil?correct answers - RNA
g) What codes for proteins?correct answers - DNA
h) 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 answers - 50
percent
i) 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 answers - It will
swell and probably burst/hypotonic situation
, j) What is the purpose of phloem tissue in plant stems?correct answers - It conducts food
throughout the plant, it is the system of narrow tubes that transports sugars and other
nutrients
k) a
l) Physical factors such as temperature and pH can alter enzyme activity because they have
an effect on the enzyme'scorrect answers - Shape, the shape of an enzyme controls it's
fit with its substrate.
m) Which part of a plants reproductive system is of a different gender than others?correct
answers - Stamen (male reproductive organ)
n) What kind of symbiosis exists between a pneumonia bacterium and a human?correct
answers - Parasitism, one organism benefits off another
o) The scientific name for a house cat is Felis catus. This indicates the house cats
what?correct answers - Genus; species
p) Kingdom/animalia
q) Phylum/Chordata
r) Class/mammalia
s) Order/carnivora
t) Family/felidae
u) Genus/ Felis
v) Species/catus
w) Beeswax is an example of what kind of molecule?correct answers - Lipid, waxes oils and
fats are lipids
x) What takes place in a lysosome?correct answers - 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
