HESI A2 BIOLOGY ACTUAL EXAM [QUESTION 1- 200] AND ANSWERS
UPDATED 2026/2027| 100% VERIFIED|DETAILED RATIONALES –PASS
GUARANTEED A+ GRADED |INSTANT DOWNLOAD
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
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
Beeswax is an example of what kind of molecule? - --CORRECT ANSWER----Lipid, waxes oils and fats are
lipids
Dogs are part of a larger animal group, the Carnivora. What classification is this? - --CORRECT ANSWER---
-Order
Foods with high salt content do not have to be refrigerated. What natural process prevents these foods
from spoiling? - --CORRECT ANSWER----Osmosis
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
How do green plants use nitrates in the nitrogen cycle? - --CORRECT ANSWER----To synthesize proteins.
A nitrate is a nitrogen containing material found in soil. Green plants take in nitrates through their roots
and use them to make amino acids, the building blocks of proteins
How do RNA and DNA derive their names? - --CORRECT ANSWER----From the sugar each contains
How does an enzyme work on a chemical reaction that occurs in a substrate? - --CORRECT ANSWER----
An enzyme speeds up the chemical reaction, because enzymes are catalysts that speed up reactions.
They do this by lowering the amount of energy needed to begin the reaction.
How does yeast reproduce? - --CORRECT ANSWER----Budding
, HESI A2 BIOLOGY ACTUAL EXAM [QUESTION 1- 200] AND ANSWERS
UPDATED 2026/2027| 100% VERIFIED|DETAILED RATIONALES –PASS
GUARANTEED A+ GRADED |INSTANT DOWNLOAD
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
How many pairs of homologous chromosomes do humans have? - --CORRECT ANSWER----23 pairs for a
total of 46
If a disease is carried on the dominant allele, only the aa combination of recessive genes represents a
disease free offspring. - --CORRECT ANSWER----1 out of 4 or 25% are predicted to be disease free
If bacteria are placed in a strong solution of salt water, they will shrink as water moves out of the
bacteria. What is this process called? - --CORRECT ANSWER----Osmosis, because if cells are placed in a
very salty solution, water molecules can diffuse across the cell membrane to move water from an area
of greater concentration of water molecules (inside the cells) to an area with a lesser concentration of
water molecules(the solution of salt water)
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
In a strand of DNA, you would expect to see adenine paired with? - --CORRECT ANSWER----
Thymine/adenine
Cytosine/guanine
In contrast to triglycerides phospholipids are lacking what component ? - --CORRECT ANSWER----Fatty
acid
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
UPDATED 2026/2027| 100% VERIFIED|DETAILED RATIONALES –PASS
GUARANTEED A+ GRADED |INSTANT DOWNLOAD
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
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
Beeswax is an example of what kind of molecule? - --CORRECT ANSWER----Lipid, waxes oils and fats are
lipids
Dogs are part of a larger animal group, the Carnivora. What classification is this? - --CORRECT ANSWER---
-Order
Foods with high salt content do not have to be refrigerated. What natural process prevents these foods
from spoiling? - --CORRECT ANSWER----Osmosis
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
How do green plants use nitrates in the nitrogen cycle? - --CORRECT ANSWER----To synthesize proteins.
A nitrate is a nitrogen containing material found in soil. Green plants take in nitrates through their roots
and use them to make amino acids, the building blocks of proteins
How do RNA and DNA derive their names? - --CORRECT ANSWER----From the sugar each contains
How does an enzyme work on a chemical reaction that occurs in a substrate? - --CORRECT ANSWER----
An enzyme speeds up the chemical reaction, because enzymes are catalysts that speed up reactions.
They do this by lowering the amount of energy needed to begin the reaction.
How does yeast reproduce? - --CORRECT ANSWER----Budding
, HESI A2 BIOLOGY ACTUAL EXAM [QUESTION 1- 200] AND ANSWERS
UPDATED 2026/2027| 100% VERIFIED|DETAILED RATIONALES –PASS
GUARANTEED A+ GRADED |INSTANT DOWNLOAD
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
How many pairs of homologous chromosomes do humans have? - --CORRECT ANSWER----23 pairs for a
total of 46
If a disease is carried on the dominant allele, only the aa combination of recessive genes represents a
disease free offspring. - --CORRECT ANSWER----1 out of 4 or 25% are predicted to be disease free
If bacteria are placed in a strong solution of salt water, they will shrink as water moves out of the
bacteria. What is this process called? - --CORRECT ANSWER----Osmosis, because if cells are placed in a
very salty solution, water molecules can diffuse across the cell membrane to move water from an area
of greater concentration of water molecules (inside the cells) to an area with a lesser concentration of
water molecules(the solution of salt water)
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
In a strand of DNA, you would expect to see adenine paired with? - --CORRECT ANSWER----
Thymine/adenine
Cytosine/guanine
In contrast to triglycerides phospholipids are lacking what component ? - --CORRECT ANSWER----Fatty
acid
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
