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HESI A2 BIOLOGY V1/V2 ACTUAL EXAM TOP
TIER QUESTIONS AND ANSWERS
Which of the biologic molecules are considered the most significant contributor to
cellular function? - ANSWER proteins
Proteins are polymers of which of the following? - ANSWER amino acids
Which of the following proteins catalyze different reactions or processes? -
ANSWER enzyme
Which of the biologic molecules are components of the molecules of inheritance?
- ANSWER nucleic acids
What is the sum of all chemical reactions that occur in an organism? - ANSWER
metabolism
In a cell, reactions take place in a series of steps called: - ANSWER metabolic
pathways
What is the fundamental unit of biology? - ANSWER cell
Which type of cell contains no defined nucleus? - ANSWER prokaryotic cell
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What is the primary purpose of the flagella on the surface of cells? - ANSWER
movement of cell
Which cell organelle functions to transport materials from the endoplasmic
reticulum throughout the cell? - ANSWER Golgi apparatus
Which of the following are the distinct organelles that produce cell energy? -
ANSWER Mitochondrion and chloroplast
Which component of the cell contributes to the protection, communication, and
passage of substances into and out of the cell? - ANSWER cell membrane
The cell membrane consists of a bilayer of phospholipids with proteins,
cholesterol, and glycoproteins. This bilayer creates a hydrophobic region between
two layers of lipids, making it which of the following? - ANSWER selectively
permeable
What are the two catabolic pathways that lead to cellular energy production? -
ANSWER fermentation and cellular respiration
What is the first step in the conversion of glucose to pyruvate? - ANSWER
glycolysis
Which step in cellular respiration yields the greatest amount of ATP? - ANSWER
Krebs cycle
HESI A2 BIOLOGY V1/V2 ACTUAL EXAM TOP
TIER QUESTIONS AND ANSWERS
Which of the biologic molecules are considered the most significant contributor to
cellular function? - ANSWER proteins
Proteins are polymers of which of the following? - ANSWER amino acids
Which of the following proteins catalyze different reactions or processes? -
ANSWER enzyme
Which of the biologic molecules are components of the molecules of inheritance?
- ANSWER nucleic acids
What is the sum of all chemical reactions that occur in an organism? - ANSWER
metabolism
In a cell, reactions take place in a series of steps called: - ANSWER metabolic
pathways
What is the fundamental unit of biology? - ANSWER cell
Which type of cell contains no defined nucleus? - ANSWER prokaryotic cell
, 2|Page
What is the primary purpose of the flagella on the surface of cells? - ANSWER
movement of cell
Which cell organelle functions to transport materials from the endoplasmic
reticulum throughout the cell? - ANSWER Golgi apparatus
Which of the following are the distinct organelles that produce cell energy? -
ANSWER Mitochondrion and chloroplast
Which component of the cell contributes to the protection, communication, and
passage of substances into and out of the cell? - ANSWER cell membrane
The cell membrane consists of a bilayer of phospholipids with proteins,
cholesterol, and glycoproteins. This bilayer creates a hydrophobic region between
two layers of lipids, making it which of the following? - ANSWER selectively
permeable
What are the two catabolic pathways that lead to cellular energy production? -
ANSWER fermentation and cellular respiration
What is the first step in the conversion of glucose to pyruvate? - ANSWER
glycolysis
Which step in cellular respiration yields the greatest amount of ATP? - ANSWER
Krebs cycle
