Hesi A2 Biology Practice Questions And
Correct Solutions | Verified
Which organelle is responsible for protein synthesis? CORRECT ANSWERS Ribosome
Why is yeast used to make bread rise? CORRECT ANSWERS Yeast carries out
fermentation, producing ethanol and carbon dioxide
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
What can be altered? CORRECT ANSWERS DNA
What is single stranded? CORRECT ANSWERS RNA
What contains uracil? CORRECT ANSWERS RNA
What codes for proteins? CORRECT ANSWERS 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
ANSWERS 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 ANSWERS It
will swell and probably burst/hypotonic situation
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
Physical factors such as temperature and pH can alter enzyme activity because they
have an effect on the enzyme's CORRECT ANSWERS 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 ANSWERS Stamen (male reproductive organ)
What kind of symbiosis exists between a pneumonia bacterium and a human?
CORRECT ANSWERS Parasitism, one organism benefits off another
, The scientific name for a house cat is Felis catus. This indicates the house cats what?
CORRECT ANSWERS 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 ANSWERS Lipid, waxes
oils and fats are lipids
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
Which organism reproduces via binary fission? CORRECT ANSWERS Salmonella
In which phase of cell division do the chromosomes replicate? CORRECT ANSWERS
Interphase-active phase of a cells reproductive life, the cell produces nucleic acids and
proteins and doubled its # of chromosomes
In a strand of DNA, you would expect to see adenine paired with? CORRECT
ANSWERS Thymine/adenine
Cytosine/guanine
Hemophilia is a sex linked trait carried on the X chromosome. In an example of a male
with hemophilia and a female carrier, what ratio of the offspring is predicted to have the
disease? CORRECT ANSWERS 1 female: 0 male
What is represented by this formula 6CO2+6H2O=>C6H12O6+6O2 CORRECT
ANSWERS Photosynthesis, carbon dioxide pairing with water to form a simple sugar
and oxygen
3 students measured the mass of a product of combustion. They recorded
measurements of 5.14g 5.16g and 5.17g if the known mass of the product is 5.30g how
would you describe the students measurements? CORRECT ANSWERS Precise
What is the energy pyramid? CORRECT ANSWERS Producers>primary
consumers>secondary consumers>decomposers
Which is not a step in the water cycle? CORRECT ANSWERS Nitrification(nitrogen
cycle)
Steps
Correct Solutions | Verified
Which organelle is responsible for protein synthesis? CORRECT ANSWERS Ribosome
Why is yeast used to make bread rise? CORRECT ANSWERS Yeast carries out
fermentation, producing ethanol and carbon dioxide
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
What can be altered? CORRECT ANSWERS DNA
What is single stranded? CORRECT ANSWERS RNA
What contains uracil? CORRECT ANSWERS RNA
What codes for proteins? CORRECT ANSWERS 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
ANSWERS 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 ANSWERS It
will swell and probably burst/hypotonic situation
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
Physical factors such as temperature and pH can alter enzyme activity because they
have an effect on the enzyme's CORRECT ANSWERS 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 ANSWERS Stamen (male reproductive organ)
What kind of symbiosis exists between a pneumonia bacterium and a human?
CORRECT ANSWERS Parasitism, one organism benefits off another
, The scientific name for a house cat is Felis catus. This indicates the house cats what?
CORRECT ANSWERS 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 ANSWERS Lipid, waxes
oils and fats are lipids
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
Which organism reproduces via binary fission? CORRECT ANSWERS Salmonella
In which phase of cell division do the chromosomes replicate? CORRECT ANSWERS
Interphase-active phase of a cells reproductive life, the cell produces nucleic acids and
proteins and doubled its # of chromosomes
In a strand of DNA, you would expect to see adenine paired with? CORRECT
ANSWERS Thymine/adenine
Cytosine/guanine
Hemophilia is a sex linked trait carried on the X chromosome. In an example of a male
with hemophilia and a female carrier, what ratio of the offspring is predicted to have the
disease? CORRECT ANSWERS 1 female: 0 male
What is represented by this formula 6CO2+6H2O=>C6H12O6+6O2 CORRECT
ANSWERS Photosynthesis, carbon dioxide pairing with water to form a simple sugar
and oxygen
3 students measured the mass of a product of combustion. They recorded
measurements of 5.14g 5.16g and 5.17g if the known mass of the product is 5.30g how
would you describe the students measurements? CORRECT ANSWERS Precise
What is the energy pyramid? CORRECT ANSWERS Producers>primary
consumers>secondary consumers>decomposers
Which is not a step in the water cycle? CORRECT ANSWERS Nitrification(nitrogen
cycle)
Steps
