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Hesi A2 Biology Practice Questions With Complete Solutions
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Hesi A2 Biology Practice Questions With Complete Solutions
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Hesi A2 Biology Practice Questions With CompleteSolutions
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
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
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