HESI A2 BIOLOGY STUDY GUIDE QUESTIONS
WITH VERIFIED ANSWERS 2026
◉ After observing an event, you develop an explanation this is:
Answer: Hypothesis
◉ A molecule of water is bonded with another molecule of water by
what type of bond? Answer: Hydrogen
◉ Which is a benefit of the intermolecular hydrogen bonding of
water: Answer: 1- Water has a relatively high specific heat value.
2- Water has strong cohesive and adhesive properties.
3- Polarity of water allows it to act as a versatile solvent.
◉ Of all molecules that are significant to biology which are
considered important: Answer: nucleic acids
◉ Lipids are better known as fats but what are they specifically?
Answer: Fatty acids, phospholipids, steroids
◉ What are the 2 categories of fatty acids? Answer: saturated fats
and unsaturated fats
, ◉ How do phospholipids function in cells? Answer: They are integral
components of plasma membrane
◉ Which of the biologic molecules are considered the most
significant contributor to cellular function? Answer: Proteins
◉ Proteins are polymers of which? 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
WITH VERIFIED ANSWERS 2026
◉ After observing an event, you develop an explanation this is:
Answer: Hypothesis
◉ A molecule of water is bonded with another molecule of water by
what type of bond? Answer: Hydrogen
◉ Which is a benefit of the intermolecular hydrogen bonding of
water: Answer: 1- Water has a relatively high specific heat value.
2- Water has strong cohesive and adhesive properties.
3- Polarity of water allows it to act as a versatile solvent.
◉ Of all molecules that are significant to biology which are
considered important: Answer: nucleic acids
◉ Lipids are better known as fats but what are they specifically?
Answer: Fatty acids, phospholipids, steroids
◉ What are the 2 categories of fatty acids? Answer: saturated fats
and unsaturated fats
, ◉ How do phospholipids function in cells? Answer: They are integral
components of plasma membrane
◉ Which of the biologic molecules are considered the most
significant contributor to cellular function? Answer: Proteins
◉ Proteins are polymers of which? 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
