Question 1

The largest carbohydrate molecules are called polysaccharides because they are composed of ________ molecules bonded together with one another.

Accepted Answer

A)  amino acid 
B)  nucleotide 
C)  purine 
D)  pyrimidine 
E)  sugar 
A)  amino acid 
B)  nucleotide 
C)  purine 
D)  pyrimidine 
E)  sugar E

Question 2

The concentration of a solution expresses the amount of

Accepted Answer

A)  solvent per volume of solute. 
B)  solute per volume of solvent. 
C)  solvent per volume of solution. 
D)  solute per volume of solution. 
E)  None of the answers are correct. 
A)  solvent per volume of solute. 
B)  solute per volume of solvent. 
C)  solvent per volume of solution. 
D)  solute per volume of solution. 
E)  None of the answers are correct. D

Question 3

The ________ molecules which form the bilayer region of the cell membrane exhibit hydrophilic properties on the outer surface and hydrophobic properties on the inner surface.

Accepted Answer

phospholipid

Question 4

Match each class of biomolecules to the correct statement about it.
-Triglycerides and steroids are members of this group.As a class they are hydrophobic.

Accepted Answer

A) carbohydrates 
B) lipids 
C) proteins 
D) nucleotides 
A) carbohydrates 
B) lipids 
C) proteins 
D) nucleotides

Question 5

The alpha-helix and pleated sheet are examples of the ________ structure of a protein.

Accepted Answer

A)  primary 
B)  secondary 
C)  tertiary 
D)  quaternary 
E)  pentanary 
A)  primary 
B)  secondary 
C)  tertiary 
D)  quaternary 
E)  pentanary

Question 6

Match the correct subatomic particle with the statement about it. Answers may be used once, more than once, or not at all.
-The identity of an element can be determined by the number of ________.

Accepted Answer

A) proton(s) 
B) neutron(s) 
C) electron(s) 
A) proton(s) 
B) neutron(s) 
C) electron(s)

Question 7

Interactions between different globular or fibrous polypeptide chains result in which type of structure?

Accepted Answer

A)  primary 
B)  secondary 
C)  tertiary 
D)  quaternary 
E)  pentagonal 
A)  primary 
B)  secondary 
C)  tertiary 
D)  quaternary 
E)  pentagonal

Question 8

The ________ of a solution is the negative logarithm of the hydrogen ion concentration,expressed in moles per liter of solution.

Accepted Answer

The answer of The ________ of a solution is the...

Question 9

While every level of a protein's structure is important to the function of that protein,which level of structure is most important to the function of enzymes,and why?

Accepted Answer

Enzymes and other globular proteins depe

Question 10

Glycosylated molecules are those formed with which group of organic compounds?

Accepted Answer

A)  lipids 
B)  nucleic acids 
C)  proteins 
D)  carbohydrates 
E)  lipoproteins 
A)  lipids 
B)  nucleic acids 
C)  proteins 
D)  carbohydrates 
E)  lipoproteins

Question 11

Match each level of protein structure with its description.
-applies to proteins containing more than one peptide chain

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary 
A) primary 
B) secondary 
C) tertiary 
D) quaternary

Question 12

You are helping your dad prepare food in the kitchen.Dad has a tablespoon of water in one hand and a tablespoon of vegetable oil in the other,when he trips over the rug and spills both spoons on the countertop.Dad notices that the oil forms a thin film on the countertop,whereas spilled water forms smaller,taller beads.How should you explain the different behavior of these liquids to your dad?

Accepted Answer

Water forms beads when it strikes a nona

Question 13

How many grams of NaCl,m.w.58.5 daltons,are the molar equivalent to 90 g of glucose (m.w.180 daltons)?

Accepted Answer

A)  0.25 
B)  0.5 
C)  29.25 
D)  117 
E)  14.6 
A)  0.25 
B)  0.5 
C)  29.25 
D)  117 
E)  14.6

Question 14

Match each level of protein structure with its description.
-the three-dimensional shape of an amino acid chain; can be fibrous or globular

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary 
A) primary 
B) secondary 
C) tertiary 
D) quaternary

Question 15

Match each bond type with its description.
-These are weak attractive forces between the nucleus of one atom and the electrons of another atom close by.

Accepted Answer

A) van der Waals 
B) ionic 
C) hydrogen 
D) covalent 
A) van der Waals 
B) ionic 
C) hydrogen 
D) covalent

Question 16

The organic molecules known as phospholipids are key components of cell membranes and composed of what monomeric units?

Accepted Answer

A)  amino acids 
B)  nucleotides 
C)  glycerol 
D)  fatty acids 
E)  both glycerol and fatty acids 
A)  amino acids 
B)  nucleotides 
C)  glycerol 
D)  fatty acids 
E)  both glycerol and fatty acids

Question 17

Protein specificity is

Accepted Answer

A)  the activation of a specific protein that is needed to perform a particular function. 
B)  the degree to which a protein is attracted to a ligand. 
C)  the ability of a protein to bind a certain ligand or a group of related ligands. 
D)  the degree to which a protein-ligand complex initiates a response. 
E)  the degree to which a protein is attracted to a ligand and the ability of a protein to bind a certain ligand or a group of related ligands. 
A)  the activation of a specific protein that is needed to perform a particular function. 
B)  the degree to which a protein is attracted to a ligand. 
C)  the ability of a protein to bind a certain ligand or a group of related ligands. 
D)  the degree to which a protein-ligand complex initiates a response. 
E)  the degree to which a protein is attracted to a ligand and the ability of a protein to bind a certain ligand or a group of related ligands.

Question 18

Lipids contain substantially more oxygen than carbohydrate molecules.Based on your answer,what does that suggest about lipid solubility in water?

Accepted Answer

A) True 
 B)False

Question 19

Match the correct subatomic particle with the statement about it. Answers may be used once, more than once, or not at all.
-This particle has a charge of -1 and a negligible mass.

Accepted Answer

A) proton(s) 
B) neutron(s) 
C) electron(s) 
A) proton(s) 
B) neutron(s) 
C) electron(s)

Question 20

Nucleic acids are polymers of units called

Accepted Answer

A)  amino acids. 
B)  fatty acids. 
C)  bases. 
D)  ribose. 
E)  nucleotides. 
A)  amino acids. 
B)  fatty acids. 
C)  bases. 
D)  ribose. 
E)  nucleotides.

Exam 2: Molecular Interactions

The largest carbohydrate molecules are called polysaccharides because they are composed of ________ molecules bonded together with one another.

The concentration of a solution expresses the amount of

The ________ molecules which form the bilayer region of the cell membrane exhibit hydrophilic properties on the outer surface and hydrophobic properties on the inner surface.

Match each class of biomolecules to the correct statement about it. -Triglycerides and steroids are members of this group.As a class they are hydrophobic.

The alpha-helix and pleated sheet are examples of the ________ structure of a protein.

Match the correct subatomic particle with the statement about it. Answers may be used once, more than once, or not at all. -The identity of an element can be determined by the number of ________.

Interactions between different globular or fibrous polypeptide chains result in which type of structure?

The ________ of a solution is the negative logarithm of the hydrogen ion concentration,expressed in moles per liter of solution.

While every level of a protein's structure is important to the function of that protein,which level of structure is most important to the function of enzymes,and why?

Glycosylated molecules are those formed with which group of organic compounds?

Match each level of protein structure with its description. -applies to proteins containing more than one peptide chain

How many grams of NaCl,m.w.58.5 daltons,are the molar equivalent to 90 g of glucose (m.w.180 daltons)?

Match each level of protein structure with its description. -the three-dimensional shape of an amino acid chain; can be fibrous or globular

Match each bond type with its description. -These are weak attractive forces between the nucleus of one atom and the electrons of another atom close by.

The organic molecules known as phospholipids are key components of cell membranes and composed of what monomeric units?

Protein specificity is

Lipids contain substantially more oxygen than carbohydrate molecules.Based on your answer,what does that suggest about lipid solubility in water?

Match the correct subatomic particle with the statement about it. Answers may be used once, more than once, or not at all. -This particle has a charge of -1 and a negligible mass.

Nucleic acids are polymers of units called

Introduction to Physiology

Compartmentation: Cells and Tissues

Energy and Cellular Metabolism

Membrane Dynamics

Communication, Integration, and Homeostasis

Introduction to the Endocrine System

Neurons: Cellular and Network Properties

The Central Nervous System

Sensory Physiology

Efferent Division: Autonomic and Somatic Motor Control

Muscles

Integrative Physiology I: Control of Body Movement

Cardiovascular Physiology

Blood Flow and the Control of Blood Pressure

Blood

Mechanics of Breathing

Gas Exchange and Transport

The Kidneys

Integrative Physiology II: Fluid and Electrolyte Balance

The Digestive System

Metabolism and Energy Balance

Endocrine Control of Growth and Metabolism

The Immune System

Integrative Physiology III: Exercise

Reproduction and Development

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