Question 1

When an ion crosses the membrane and binds to a protein to accomplish this feat,it is using

Accepted Answer

A) passive diffusion. 
B) facilitated diffusion. 
C) active transport. 
D) either B or C 
A) passive diffusion. 
B) facilitated diffusion. 
C) active transport. 
D) either B or C D

Question 2

Which of the following types of energy is strictly potential energy?

Accepted Answer

A) mechanical energy 
B) radiant energy 
C) chemical energy 
D) electrical energy 
A) mechanical energy 
B) radiant energy 
C) chemical energy 
D) electrical energy C

Question 3

Release of energy from many biological molecules requires oxygen,and yet some species are able to survive in conditions having little or no oxygen (hypoxia or anoxia).What adaptations allow them to do this?

Accepted Answer

The most obvious means is to decrease the energy requirements by slowing metabolic reactions in all or part of the tissues.This extends the supply of fuel that can be utilized without oxygen.Animals can also store more of their energy as glycogen,which can be metabolized by anaerobic glycolysis.Lastly,some animals have modified glycolytic pathways that produce end products other than lactate.These end products are less toxic,or can be removed easily from the body so they do not stop glycolysis.

Question 4

Your book refers to the process of diffusion and mentions that both chemical and electrical gradients may influence this process.Explain why Na⁺ would be influenced by both chemical and electrical gradients,but glucose would not.

Accepted Answer

Diffusion allows molecules to form rando

Question 5

Proteins,carbohydrates,and lipids all perform vital functions for an organism.Discuss some of these vital functions and what could happen to an animal if one of these biological molecules were removed from their diet.

Accepted Answer

Proteins play important roles in the str

Question 6

When the potential of a cell membrane becomes less negative,or gains more positive charges,the term __________ is applied.

Accepted Answer

The answer of When the potential of a cell membrane...

Question 7

Which of the following pairs is correctly matched?

Accepted Answer

A) monosaccharides / glucose,fructose,sucrose 
B) disaccharides / lactose,maltose,galactose 
C) polysaccharides / glycogen,starch,chitin 
D) glycosylation / addition of lipids to macromolecules 
A) monosaccharides / glucose,fructose,sucrose 
B) disaccharides / lactose,maltose,galactose 
C) polysaccharides / glycogen,starch,chitin 
D) glycosylation / addition of lipids to macromolecules

Question 8

The term that describes a macromolecule that has unfolded as a result of an increase in temperature is _________.

Accepted Answer

The answer of The term that describes a macromolecule that...

Question 9

How can environmental conditions such as salt concentration,temperature,and pH physically affect the enzyme itself?

Accepted Answer

A) Ions can bind to the active sites of enzymes,preventing the binding of substrate. 
B) Changes in temperature change the rate at which molecules interact with the enzyme. 
C) All these factors can disrupt the weak bonds that hold the enzyme in its active conformation. 
D) These factors affect only the substrate. 
A) Ions can bind to the active sites of enzymes,preventing the binding of substrate. 
B) Changes in temperature change the rate at which molecules interact with the enzyme. 
C) All these factors can disrupt the weak bonds that hold the enzyme in its active conformation. 
D) These factors affect only the substrate.

Question 10

The __________ describes how phospholipids,proteins,and other biological molecules come together to form a flexible cell membrane.

Accepted Answer

The answer of The __________ describes how phospholipids,proteins,and other biological...

Question 11

__________ enters the TCA cycle and forms NADH and FADH₂,which can then be used for ATP production.

Accepted Answer

A) Acetyl CoA 
B) Glucose 
C) Pyruvate 
D) A fatty acid chain 
A) Acetyl CoA 
B) Glucose 
C) Pyruvate 
D) A fatty acid chain

Question 12

Winding DNA around __________ serves two major purposes: protection and compression.

Accepted Answer

The answer of Winding DNA around __________ serves two major...

Question 13

Energy is stored temporarily in reducing equivalents such as __________,and then released later in oxidation reactions.

Accepted Answer

The answer of Energy is stored temporarily in reducing equivalents...

Question 14

Which of the following types of regulation involves binding to the active site?

Accepted Answer

A) competitive inhibition 
B) allosteric regulation 
C) covalent modification 
D) both B and C 
A) competitive inhibition 
B) allosteric regulation 
C) covalent modification 
D) both B and C

Question 15

Temperature and pH can have profound effects on the ionization states of molecules.Explain how they can cause these effects and why ionization is important physiologically.

Accepted Answer

Molecules are frequently connected to ea

Question 16

The __________ structure of proteins involves interactions of amino acids that are found on different subunits.

Accepted Answer

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

Question 17

An __________ protein is one that spans the entire membrane or is fixed in it.

Accepted Answer

The answer of An __________ protein is one that spans...

Question 18

The correct term(s)for the most abundant liquid in which other molecules are dissolved is/are

Accepted Answer

A) solvent. 
B) solute. 
C) solution. 
D) both A and C 
A) solvent. 
B) solute. 
C) solution. 
D) both A and C

Question 19

There are multiple ways that particles may cross a cellular membrane.Discuss the salient features of passive diffusion,facilitated diffusion,and active transport.

Accepted Answer

Passive diffusion implies that no aid is

Question 20

Which of the following statements correctly describes fatty acids?

Accepted Answer

A) Volatile fatty acids are the longest fatty acids. 
B) Saturated fatty acids are linear in structure and have one or no double bonds. 
C) Medium-chain fatty acids are produced by ruminants when cellulose is fermented. 
D) Double bonds in fatty acids create bends/kinks in the chain,thus altering membrane structure. 
A) Volatile fatty acids are the longest fatty acids. 
B) Saturated fatty acids are linear in structure and have one or no double bonds. 
C) Medium-chain fatty acids are produced by ruminants when cellulose is fermented. 
D) Double bonds in fatty acids create bends/kinks in the chain,thus altering membrane structure.

When an ion crosses the membrane and binds to a protein to accomplish this feat,it is using

Which of the following types of energy is strictly potential energy?

Release of energy from many biological molecules requires oxygen,and yet some species are able to survive in conditions having little or no oxygen (hypoxia or anoxia).What adaptations allow them to do this?

Your book refers to the process of diffusion and mentions that both chemical and electrical gradients may influence this process.Explain why Na⁺ would be influenced by both chemical and electrical gradients,but glucose would not.

Proteins,carbohydrates,and lipids all perform vital functions for an organism.Discuss some of these vital functions and what could happen to an animal if one of these biological molecules were removed from their diet.

When the potential of a cell membrane becomes less negative,or gains more positive charges,the term __________ is applied.

Which of the following pairs is correctly matched?

The term that describes a macromolecule that has unfolded as a result of an increase in temperature is _________.

How can environmental conditions such as salt concentration,temperature,and pH physically affect the enzyme itself?

The __________ describes how phospholipids,proteins,and other biological molecules come together to form a flexible cell membrane.

__________ enters the TCA cycle and forms NADH and FADH₂,which can then be used for ATP production.

Winding DNA around __________ serves two major purposes: protection and compression.

Energy is stored temporarily in reducing equivalents such as __________,and then released later in oxidation reactions.

Which of the following types of regulation involves binding to the active site?

Temperature and pH can have profound effects on the ionization states of molecules.Explain how they can cause these effects and why ionization is important physiologically.

The __________ structure of proteins involves interactions of amino acids that are found on different subunits.

An __________ protein is one that spans the entire membrane or is fixed in it.

The correct term(s)for the most abundant liquid in which other molecules are dissolved is/are

There are multiple ways that particles may cross a cellular membrane.Discuss the salient features of passive diffusion,facilitated diffusion,and active transport.

Which of the following statements correctly describes fatty acids?

Introduction to Physiological Principles

Physiological Evolution of Animals

Cell Signaling and Endocrine Regulation

Neuron Structure and Function

Cellular Movement and Muscles

Sensory Systems

Functional Organization of Nervous Systems

Circulatory Systems

Immune Systems

Respiratory Systems

Locomotion

Ion and Water Balance

Digestion and Energy Metabolism

Thermal Physiology

Reproductive Physiology

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Exam 3: Chemistry, biochemistry, and Cell Physiology

When an ion crosses the membrane and binds to a protein to accomplish this feat,it is using

Which of the following types of energy is strictly potential energy?

Release of energy from many biological molecules requires oxygen,and yet some species are able to survive in conditions having little or no oxygen (hypoxia or anoxia).What adaptations allow them to do this?

Your book refers to the process of diffusion and mentions that both chemical and electrical gradients may influence this process.Explain why Na⁺ would be influenced by both chemical and electrical gradients,but glucose would not.

Proteins,carbohydrates,and lipids all perform vital functions for an organism.Discuss some of these vital functions and what could happen to an animal if one of these biological molecules were removed from their diet.

When the potential of a cell membrane becomes less negative,or gains more positive charges,the term __________ is applied.

Which of the following pairs is correctly matched?

The term that describes a macromolecule that has unfolded as a result of an increase in temperature is _________.

How can environmental conditions such as salt concentration,temperature,and pH physically affect the enzyme itself?

The __________ describes how phospholipids,proteins,and other biological molecules come together to form a flexible cell membrane.

__________ enters the TCA cycle and forms NADH and FADH₂,which can then be used for ATP production.

Winding DNA around __________ serves two major purposes: protection and compression.

Energy is stored temporarily in reducing equivalents such as __________,and then released later in oxidation reactions.

Which of the following types of regulation involves binding to the active site?

Temperature and pH can have profound effects on the ionization states of molecules.Explain how they can cause these effects and why ionization is important physiologically.

The __________ structure of proteins involves interactions of amino acids that are found on different subunits.

An __________ protein is one that spans the entire membrane or is fixed in it.

The correct term(s)for the most abundant liquid in which other molecules are dissolved is/are

There are multiple ways that particles may cross a cellular membrane.Discuss the salient features of passive diffusion,facilitated diffusion,and active transport.

Which of the following statements correctly describes fatty acids?

Introduction to Physiological Principles

Physiological Evolution of Animals

Cell Signaling and Endocrine Regulation

Neuron Structure and Function

Cellular Movement and Muscles

Sensory Systems

Functional Organization of Nervous Systems

Circulatory Systems

Immune Systems

Respiratory Systems

Locomotion

Ion and Water Balance

Digestion and Energy Metabolism

Thermal Physiology

Reproductive Physiology

Filters