HESI BIOLOGY QUESTIONS AND ANSWER
GRADED A+ 2024/2025
Ribonucleic acid (RNA) – Answer Is used in transfer and as a messenger in most species of the genetic
code.
Ribosomes – Answer Organelles that read the RNA produced in the nucleus and translate the genetic
instructions to produce proteins.
Rough E.R – Answer Section of the Endoplasmic Reticulum responsible for protein synthesis and
membrane production.
Saturated - Answer______ fats contain no double bonds in their hydrocarbon tail.
Saturated – Answer Type of fat that is solid at room temperature and are considered detrimental and can
cause cardiovascular problems absorbed in excess.
selectively permeable – Answer Phospholipids are amphipathic molecules, this bilayer creates a
hydrophobic region in between layers of lipids making the cell membrane _________________.
Smooth E.R – Answer Section of the Endoplasmic Reticulum that functions as the detoxification and
metabolism of multiple molecules.
Smooth Endoplasmic Reticulum (Smooth E.R) – Answer Which organelle would you expect to be present
in a cell responsible for detoxifying multiple molecules?
Species – Answer The least inclusive hierarchic system
Specific heat – Answer The ______ of a molecule is the amount of heat necessary to raise the
temperature of 1 gram of that molecule by 1 degrees Celsius.
,Steroids – Answer Important component of membranes but more important, many are important
precursors to significant hormones.
stop codon – Answer Eventually the chain is ended as what is called the ______.
Storage, structure and energy. – Answer What are the most important functions of carbohydrates?
Telophase – Answer Chromosomes are gathered on either side of the the now separating cell. This is the
end of mitosis.
The molecules combine in a way that creates a barrier to protect the cell; and therefore, are important in
the function of cellular membranes. – Answer What is particularly important about Phospholipids?
The polarity of its bonds. – Answer The most significant aspect of water is?
A. Mitochondria and chloroplast – Answer Which of the following are the distinct organelles that
produce cell energy?
A. Mitochondrion and chloroplast
B. Mitochondrion and nucleus
C. Chloroplast and nucleus
D. Chloroplast and lysosome
C. Electron transport chain – Answer Which step in cellular respiration yields the greatest amount of
ATP?
A. Glycolysis
B. Krebs Cycle
C. Electron transport Chain
D. Fermentation
C. Enzyme – Answer Which of the following proteins catalyze different reactions or processes?
, A. Keratin
B. Hormone
C. Enzyme
D. Collagen
C. Fermentation and cellular respiration – Answer What are the catabolic pathways that lead to cellular
energy production?
A. Fermentation and internal respiration
B. Fermentation and external respiration
C. Fermentation and cellular respiration
D. Fermentation and anaerobic respiration
C. Fimbria – Answer What is cilium-like structure that certain bacteria cells have which allows them to
attach to a host tissue?
A. Cilia
B. Tentacles
C. Fimbria
D. Flagella
C. Gram – Answer Which is not a morphology of bacterial classification?
A. Bacillus
B. Coccus
C. Gram
D. Vibrio
C. Hydrogen – Answer A molecule of water is bonded with another molecule of water by what type of
bond?
A. Ionic
B. Covalent
C. Hydrogen
GRADED A+ 2024/2025
Ribonucleic acid (RNA) – Answer Is used in transfer and as a messenger in most species of the genetic
code.
Ribosomes – Answer Organelles that read the RNA produced in the nucleus and translate the genetic
instructions to produce proteins.
Rough E.R – Answer Section of the Endoplasmic Reticulum responsible for protein synthesis and
membrane production.
Saturated - Answer______ fats contain no double bonds in their hydrocarbon tail.
Saturated – Answer Type of fat that is solid at room temperature and are considered detrimental and can
cause cardiovascular problems absorbed in excess.
selectively permeable – Answer Phospholipids are amphipathic molecules, this bilayer creates a
hydrophobic region in between layers of lipids making the cell membrane _________________.
Smooth E.R – Answer Section of the Endoplasmic Reticulum that functions as the detoxification and
metabolism of multiple molecules.
Smooth Endoplasmic Reticulum (Smooth E.R) – Answer Which organelle would you expect to be present
in a cell responsible for detoxifying multiple molecules?
Species – Answer The least inclusive hierarchic system
Specific heat – Answer The ______ of a molecule is the amount of heat necessary to raise the
temperature of 1 gram of that molecule by 1 degrees Celsius.
,Steroids – Answer Important component of membranes but more important, many are important
precursors to significant hormones.
stop codon – Answer Eventually the chain is ended as what is called the ______.
Storage, structure and energy. – Answer What are the most important functions of carbohydrates?
Telophase – Answer Chromosomes are gathered on either side of the the now separating cell. This is the
end of mitosis.
The molecules combine in a way that creates a barrier to protect the cell; and therefore, are important in
the function of cellular membranes. – Answer What is particularly important about Phospholipids?
The polarity of its bonds. – Answer The most significant aspect of water is?
A. Mitochondria and chloroplast – Answer Which of the following are the distinct organelles that
produce cell energy?
A. Mitochondrion and chloroplast
B. Mitochondrion and nucleus
C. Chloroplast and nucleus
D. Chloroplast and lysosome
C. Electron transport chain – Answer Which step in cellular respiration yields the greatest amount of
ATP?
A. Glycolysis
B. Krebs Cycle
C. Electron transport Chain
D. Fermentation
C. Enzyme – Answer Which of the following proteins catalyze different reactions or processes?
, A. Keratin
B. Hormone
C. Enzyme
D. Collagen
C. Fermentation and cellular respiration – Answer What are the catabolic pathways that lead to cellular
energy production?
A. Fermentation and internal respiration
B. Fermentation and external respiration
C. Fermentation and cellular respiration
D. Fermentation and anaerobic respiration
C. Fimbria – Answer What is cilium-like structure that certain bacteria cells have which allows them to
attach to a host tissue?
A. Cilia
B. Tentacles
C. Fimbria
D. Flagella
C. Gram – Answer Which is not a morphology of bacterial classification?
A. Bacillus
B. Coccus
C. Gram
D. Vibrio
C. Hydrogen – Answer A molecule of water is bonded with another molecule of water by what type of
bond?
A. Ionic
B. Covalent
C. Hydrogen
