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