HESI Biology from Elsevier Review
Exam Questions with Complete Answers
In the hierarchic system of classification, which of the following is the least inclusive? -
Answer-Species
After observing an event, you develop an explanation. This statement is referred to as- -
Answer-Hypotheses
A molecule of water bonded with another molecule of water by what type of bond? -
Answer-Hydrogen
Which of the following is a benefit of the intermolecular hydrogen bonding of water? -
Answer-Water has a relatively high specific heat value, water has strong cohesive and
adhesive properties, and polarity of water allows it to act as a versatile solvent
Of all the molecules that are significant to biology which are considered the most
important? - Answer-Carbohydrates, lipids, protein, and nucleic acid
Lipids are better known as fats, but what are they specifically? - Answer-Fatty acids,
phospholipids, and steroids
What are the two categories of fatty acids? - Answer-saturated and unsaturated fats
How do phospholipids function in cells? - Answer-They are integral components of the
plasma membrane.
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
Exam Questions with Complete Answers
In the hierarchic system of classification, which of the following is the least inclusive? -
Answer-Species
After observing an event, you develop an explanation. This statement is referred to as- -
Answer-Hypotheses
A molecule of water bonded with another molecule of water by what type of bond? -
Answer-Hydrogen
Which of the following is a benefit of the intermolecular hydrogen bonding of water? -
Answer-Water has a relatively high specific heat value, water has strong cohesive and
adhesive properties, and polarity of water allows it to act as a versatile solvent
Of all the molecules that are significant to biology which are considered the most
important? - Answer-Carbohydrates, lipids, protein, and nucleic acid
Lipids are better known as fats, but what are they specifically? - Answer-Fatty acids,
phospholipids, and steroids
What are the two categories of fatty acids? - Answer-saturated and unsaturated fats
How do phospholipids function in cells? - Answer-They are integral components of the
plasma membrane.
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
