Hesi A2 Biology Practice Questions
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
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
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
Which organism reproduces via binary fission? - Correct Answer-Salmonella
In which phase of cell division do the chromosomes replicate? - Correct Answer-
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 Answer-
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 Answer-1 female: 0 male
What is represented by this formula 6CO2+6H2O=>C6H12O6+6O2 - Correct Answer-
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 Answer-Precise
What is the energy pyramid? - Correct Answer-Producers>primary
consumers>secondary consumers>decomposers
Which is not a step in the water cycle? - Correct Answer-Nitrification(nitrogen cycle)
Steps
Condensation(gas to liquid)
Transpiration(loss of water through a plants stomata)
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
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
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
Which organism reproduces via binary fission? - Correct Answer-Salmonella
In which phase of cell division do the chromosomes replicate? - Correct Answer-
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 Answer-
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 Answer-1 female: 0 male
What is represented by this formula 6CO2+6H2O=>C6H12O6+6O2 - Correct Answer-
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 Answer-Precise
What is the energy pyramid? - Correct Answer-Producers>primary
consumers>secondary consumers>decomposers
Which is not a step in the water cycle? - Correct Answer-Nitrification(nitrogen cycle)
Steps
Condensation(gas to liquid)
Transpiration(loss of water through a plants stomata)
