HESI A2 BIOLOGY PRACTICE EXAM
2026/2027 WITH 130 QUESTIONS AND
EXPERT-VERIFIED CORRECT
ANSWERS | ALREADY GRADED A+ |
GUARANTEED PASS
What is the cilium-like structure present in certain bacteria cells that allows them
to attach to a host tissue?
a. Fimbria
b. Cilia
c. Tentacles
d. Flagella - ANSWER-- Fimbria
Fimbria are appendages found on many Gram-negative (and some Gram-positive)
bacteria that allow them to attach to other bacteria, cells, or inanimate objects.
Which of the following is a disease not caused by bacteria?
,a. Diphtheria
b. Parkinson's
c. Cholera
d. Syphilis - ANSWER-- Parkinson's
Parkinson's is a degenerative disorder of the central nervous system and is not
caused by bacterial infection.
Thigmotropism is the oriented growth of an organism in response to which of the
following?
a. Light
b. Heat
c. Gravity
d. Physical contact - ANSWER-- Physical contact
Thigmotropism occurs when a plant grows in response to stimuli or touch.
Climbing vines are an example of a plant that exhibit this phenomena.
Which chemical(s) carry an impulse along a nerve cell?
a. Scandium and iron
b. Iron and sodium
c. Hydroxyapatite
d. Sodium and potassium - ANSWER-- Sodium and potassium
Nerve signals are carried out in part by the coordinated movement of sodium and
potassium ions across the cell membrane.
Which of the following is true of viruses?
,a. Some are parasitic, some are not
b. They are acellular
c. They are larger than bacteria
d. heir genetic material can be composed of DNA, RNA, or both - ANSWER--
They are acellular
Viruses are considered acellular because they do not have organelles or cytoplasm.
All viruses are parasitic, as they depend on a host source to be able to reproduce.
Viruses can be composed of either DNA or RNA, both not both. If they are
composed of RNA, they are called a retrovirus. Viruses are typically much smaller
than bacteria.
Which of the following is a correct description of metaphase during mitosis?
a. The nuclear envelope disappears and the chromosomes begin to attach to the
spindle that forms along the axis of the cell.
b. Chromosomes gather on either side of the now separating cell.
c. Chromosomes start to separate.
d. Chromosomes align along the center of the cell. - ANSWER-- Chromosomes
align along the center of the cell
Question 1 Explanation:
During metaphase, the chromosomes align along the center of the cell. During
prometaphase the nuclear envelope disappears and the chromosomes start to attach
to the spindle. Anaphase is when the chromosomes start to separate. Telophase is
when the chromosomes gather on either side of the now separating cell; it leads
into cytokinesis in animal cells.
Where can ribosomes be found inside a cell?
, a. Attached to the endoplasmic reticulum and in the cytoplasm.
B. Only in the cytoplasm.
C. Only attached to the endoplasmic reticulum.
D. None of the above. - ANSWER-- Attached to the endoplasmic reticulum and in
the cytoplasm
Ribosomes can be found in two places: attached to the endoplasmic reticulum
(Rough ER) or free floating in the cytoplasm.
What is the role of the Golgi apparatus in the cell?
A. To provide intracellular digestion.
B. To provide transportation of materials throughout the cell.
C. To uptake food through the cell membrane.
D. To produce cellular respiration. - ANSWER-- To provide transportation of
materials throughout the cell.
Question 3 Explanation:
The Golgi apparatus is responsible for transport of materials throughout the cell.
Intracellular digestion occurs within lysosomes, while food uptake is the job of
vacuoles. Cellular respiration is the function of mitochondria.
What characteristic of water allows for hydrogen bonding between molecules?
A. Its high specific heat.
B. Its cohesive properties.
C. Its covalent bonds.
2026/2027 WITH 130 QUESTIONS AND
EXPERT-VERIFIED CORRECT
ANSWERS | ALREADY GRADED A+ |
GUARANTEED PASS
What is the cilium-like structure present in certain bacteria cells that allows them
to attach to a host tissue?
a. Fimbria
b. Cilia
c. Tentacles
d. Flagella - ANSWER-- Fimbria
Fimbria are appendages found on many Gram-negative (and some Gram-positive)
bacteria that allow them to attach to other bacteria, cells, or inanimate objects.
Which of the following is a disease not caused by bacteria?
,a. Diphtheria
b. Parkinson's
c. Cholera
d. Syphilis - ANSWER-- Parkinson's
Parkinson's is a degenerative disorder of the central nervous system and is not
caused by bacterial infection.
Thigmotropism is the oriented growth of an organism in response to which of the
following?
a. Light
b. Heat
c. Gravity
d. Physical contact - ANSWER-- Physical contact
Thigmotropism occurs when a plant grows in response to stimuli or touch.
Climbing vines are an example of a plant that exhibit this phenomena.
Which chemical(s) carry an impulse along a nerve cell?
a. Scandium and iron
b. Iron and sodium
c. Hydroxyapatite
d. Sodium and potassium - ANSWER-- Sodium and potassium
Nerve signals are carried out in part by the coordinated movement of sodium and
potassium ions across the cell membrane.
Which of the following is true of viruses?
,a. Some are parasitic, some are not
b. They are acellular
c. They are larger than bacteria
d. heir genetic material can be composed of DNA, RNA, or both - ANSWER--
They are acellular
Viruses are considered acellular because they do not have organelles or cytoplasm.
All viruses are parasitic, as they depend on a host source to be able to reproduce.
Viruses can be composed of either DNA or RNA, both not both. If they are
composed of RNA, they are called a retrovirus. Viruses are typically much smaller
than bacteria.
Which of the following is a correct description of metaphase during mitosis?
a. The nuclear envelope disappears and the chromosomes begin to attach to the
spindle that forms along the axis of the cell.
b. Chromosomes gather on either side of the now separating cell.
c. Chromosomes start to separate.
d. Chromosomes align along the center of the cell. - ANSWER-- Chromosomes
align along the center of the cell
Question 1 Explanation:
During metaphase, the chromosomes align along the center of the cell. During
prometaphase the nuclear envelope disappears and the chromosomes start to attach
to the spindle. Anaphase is when the chromosomes start to separate. Telophase is
when the chromosomes gather on either side of the now separating cell; it leads
into cytokinesis in animal cells.
Where can ribosomes be found inside a cell?
, a. Attached to the endoplasmic reticulum and in the cytoplasm.
B. Only in the cytoplasm.
C. Only attached to the endoplasmic reticulum.
D. None of the above. - ANSWER-- Attached to the endoplasmic reticulum and in
the cytoplasm
Ribosomes can be found in two places: attached to the endoplasmic reticulum
(Rough ER) or free floating in the cytoplasm.
What is the role of the Golgi apparatus in the cell?
A. To provide intracellular digestion.
B. To provide transportation of materials throughout the cell.
C. To uptake food through the cell membrane.
D. To produce cellular respiration. - ANSWER-- To provide transportation of
materials throughout the cell.
Question 3 Explanation:
The Golgi apparatus is responsible for transport of materials throughout the cell.
Intracellular digestion occurs within lysosomes, while food uptake is the job of
vacuoles. Cellular respiration is the function of mitochondria.
What characteristic of water allows for hydrogen bonding between molecules?
A. Its high specific heat.
B. Its cohesive properties.
C. Its covalent bonds.
