HESI A2 BIOLOGY EXAM |A COMPLETE SOLUTION
WITH VERIFIED QUESTIONS AND ANSWERS WITH
RATIONALES |GET IT 100% CORRECT |GRADED A+
Which is not a step in the water cycle?
Nitrification(nitrogen cycle)
Steps
Condensation(gas to liquid)
Transpiration(loss of water through a plants stomata)
Absorption(intake of water from the water table by plant roots)
Which gives the order of four taxonomic categories from least to most
specific?
Kingdom phylum class order family genus species
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
WITH VERIFIED QUESTIONS AND ANSWERS WITH
RATIONALES |GET IT 100% CORRECT |GRADED A+
Which is not a step in the water cycle?
Nitrification(nitrogen cycle)
Steps
Condensation(gas to liquid)
Transpiration(loss of water through a plants stomata)
Absorption(intake of water from the water table by plant roots)
Which gives the order of four taxonomic categories from least to most
specific?
Kingdom phylum class order family genus species
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
