HESI A2 V2 BIOLOGY Exam 2023/2024 Questions with Correct Answers
A patient receives an antibiotic for symptoms of the flu. Why
doesn’t the medication
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The medication is for a different type of flu.
The medication is not suitable for treating the flu.
The medication is not a strong enough dosage amount to cure the
patient.
None of the above
The correct answer is B. Antibiotics are used for treating bacterial
infections, but the flu is caused by a virus. Although symptoms can
be similar in case of a cold (bacteria) or the flu (virus), viruses
cannot be treated using antibiotics.
The nucleus is important in a cell because:
It stores the DNA
It supports the cell
It makes protein
It makes energy out of food
The correct answer is A. The nucleus is the “brain” of the cell and
stores the DNA. A cell wall supports the cell (only if it is a plant).
The ribosomes make protein and the mitochondria makes energy.
Cellular respiration happens so that
Cells can copy DNA
Cells can breathe
Cells can convert nutrients to energy
Cells can divide
The correct answer is C. The term respiration typically triggers
thoughts of breathing, but in this case, it is referring to the process
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cells undergo to convert nutrients into ATP. Copying DNA is
transcription and translation. Cells themselves cannot breathe. Cell
division is mitosis or meiosis, depending on the type of cell.
Anaerobic respiration
happens in
Animals; they need energy
Plants; they use sunlight
_ because _ .
Bacteria; they live in environments with low oxygen.
None of the above
The correct answer is C. Animals and plants both use aerobic
respiration because they have access to oxygen. Bacteria typically
live in environments with little to no oxygen and must still produce
energy to survive.
All bacteria are bad and always cause infections.
True
False
The correct answer is B. Bacteria can be good, such as the bacteria
in the intestines. This bacterium can become problematic if it travels
to a location other than where it belongs. Pathogenic bacteria are bad
and can cause infections, but not all bacteria are this type.
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Which of the following is not true about antibiotics?
They can interfere with the bacteria’s ability to survive
They can affect how bacteria multiply
They can cause more bacteria to grow
They only work on bacteria
The correct answer is C. Antibiotics only work on bacteria by either
blocking its ability to grow or multiply, or completely killing the
bacteria cells.
Prokaryotic cells:
Have a nucleus
Have a capsule
Have membrane bound organelles
Cannot move on their own
The correct answer is B. Prokaryotic cells are simple, single celled
organisms. They do not have a nucleus or membrane bound
organelles. This type of cell can move on its own with a flagella or
small hair-like fibers.
Select the cell parts that are present in plant cells but not animal cells
(there may be more than one answer):
Cell membrane
Cell wall
Ribosome
Chloroplast
The correct answer is B and D. Both plant and animal cells have a
cell membrane and ribosomes, however only plant cells have a cell
wall and chloroplasts. The cell wall is necessary for maintaining the
shape and structure of the plant. Chloroplasts are necessary for
photosynthesis.
Epithelial tissue can be found in:
Organ lining
Heart muscle
Tendons
Spinal cord
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The correct answer is A. Epithelial tissue is found in skin and all of
the linings within the body. Heart muscle is muscle tissue, tendons
are connective tissue and the spinal cord is nervous tissue.
What are the three types of muscle tissue?
Cardiac, spinal, stomach
Smooth, skeletal, cardiac
Neuron, epithelial, collagen
None of the above
The correct answer is B. Smooth muscle is found in organs like the
stomach, where it is involuntarily controlled. Skeletal muscle is
found in voluntary muscles, like the bicep or quadriceps. Cardiac
muscle is found only in the heart walls and works involuntarily to
make the heart beat and pump blood.
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Which type of tissue is fat?
Connective
Muscle
Nervous
Epithelial
The correct answer is A. Fat is a type of loose connective tissue
called adipose. Its job is to cushion organs. Fat is not made of
muscle cells, neurons or epithelial cells.
What type of cells have a cell membrane?
Prokaryotic only
Eukaryotic only
Both prokaryotic and eukaryotic
None of the above
The correct answer is C. Cell membranes are present in all types of
cells. Its purpose is to hold in the fluids and other components of the
cell and protect against external substances and invaders.
How is the plasma membrane arranged?
In a single layer made of proteins
In a double layer made of proteins
In a single layer of phospholipids
In a double layer of phospholipids
The correct answer is D. The plasma membrane is made of a
phospholipid bilayer that has two layers of phospholipids. The
hydrophilic phosphate heads face the outside of the layers and the
fatty acid tails face inward, since they are hydrophobic.
The head of a phospholipid:
Is water loving
Is water fearing
Is on the outer side of the layer
Both A and C
The correct answer is D. The phosphate head is on the outer part of
the bilayer because it is hydrophilic, which means that it can be in
contact with water and not react.
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