Question 1

How do amino acids like hydroxylysine and thyroxine,which are not among the 20 amino acids that are inserted into proteins,get into proteins?

Accepted Answer

A) They are inserted directly. 
B) They are the result of the alteration of R groups of the 20 amino acids after their incorporation into the polypeptide. 
C) They are the result of the alteration of R groups of the 20 amino acids before their incorporation into the polypeptide. 
D) There are more than the 20 amino acids that are said to be inserted into proteins. 
E) Their atoms are altered by insertion into the polypeptide. 
A) They are inserted directly. 
B) They are the result of the alteration of R groups of the 20 amino acids after their incorporation into the polypeptide. 
C) They are the result of the alteration of R groups of the 20 amino acids before their incorporation into the polypeptide. 
D) There are more than the 20 amino acids that are said to be inserted into proteins. 
E) Their atoms are altered by insertion into the polypeptide.

Question 2

What kind of bond results from an unequal sharing of electrons?

Accepted Answer

A) ionic bond 
B) polar covalent bond 
C) H bond 
D) nonpolar covalent bond 
A) ionic bond 
B) polar covalent bond 
C) H bond 
D) nonpolar covalent bond

Question 3

The low-molecular-weight building blocks of polymers are called _______.

Accepted Answer

A) minipolymers 
B) monoblocks 
C) monomers 
D) portions 
E) octamers 
A) minipolymers 
B) monoblocks 
C) monomers 
D) portions 
E) octamers

Question 4

Which of the following groups is capable of only hydrophilic interactions?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 5

Tertiary structure in DNA is also known as ________.

Accepted Answer

A) primary structure 
B) supercoiling 
C) double helix 
D) $\alpha$-helix 
A) primary structure 
B) supercoiling 
C) double helix 
D) $\alpha$-helix

Question 6

What human disease was found to be similar to kuru in the brain abnormalities it caused? What disease in sheep contributes its name to the abnormal prion molecule,PrPSC? What have been the causes of outbreaks of acquired CJD?

Accepted Answer

Creutzfeld-Jakob disease (CJD)is similar

Question 7

Which of the following is not a macromolecule formed by polymerization?

Accepted Answer

A) proteins 
B) lipids 
C) polynucleotides 
D) polysaccharides 
E) DNA 
A) proteins 
B) lipids 
C) polynucleotides 
D) polysaccharides 
E) DNA

Question 8

Not all proteins are able to renature.Some proteins when exposed to heat or some other denaturing treatment are irreversibly denatured.What is an example of such a protein?

Accepted Answer

Egg white protein an

Question 9

If mice are maintained on very strict diets with reduced caloric intake,what happens to their life span as compared to littermates fed diets with normal caloric content? What is a possible explanation for the effect of this diet on these animals?

Accepted Answer

The mice on restricted calorie diets liv

Question 10

Which of the groups below is capable of only hydrophobic interactions? Explain your answer.Which is capable of only hydrophilic interactions? Explain your answer.

Accepted Answer

A is capable of only hydrophobic interac

Question 11

How was it proved that the brains of patients suffering from CJD,an inherited disease,contain an infectious agent?

Accepted Answer

Carlton Gajdusek prepared extracts from

Question 12

Which interaction is most important in enhancing the solubility of macromolecules in water?

Accepted Answer

A) hydrophobic interactions 
B) nonpolar covalent bonds 
C) H bonds 
D) van der Waals forces 
E) Both hydrophobic interactions and nonpolar covalent bonds 
A) hydrophobic interactions 
B) nonpolar covalent bonds 
C) H bonds 
D) van der Waals forces 
E) Both hydrophobic interactions and nonpolar covalent bonds

Question 13

What is spongiform encephalopathy?

Accepted Answer

This is a pathology in which c

Question 14

Which polysaccharide bond cannot be broken by mammalian enzymes that normally digest polysaccharides?

Accepted Answer

A) $\alpha$ (1->4)glycosidic linkages 
B) $\beta$ (1->4)glycosidic linkages 
C) $\alpha$(1->6)glycosidic linkages 
D) $\beta$ (1->6)glycosidic linkages 
E) phosphate ester linkages 
A) $\alpha$ (1->4)glycosidic linkages 
B) $\beta$ (1->4)glycosidic linkages 
C) $\alpha$(1->6)glycosidic linkages 
D) $\beta$ (1->6)glycosidic linkages 
E) phosphate ester linkages

Question 15

What enzyme is responsible for the destruction of a type of free radical formed when molecular oxygen picks up an extra electron?

Accepted Answer

Superoxide

Question 16

Which of the following is a nucleotide?

Accepted Answer

A) phosphate + ribose 
B) adenine + deoxyribose 
C) sugar + nitrogenous base 
D) adenine + ribose + phosphate 
A) phosphate + ribose 
B) adenine + deoxyribose 
C) sugar + nitrogenous base 
D) adenine + ribose + phosphate

Question 17

Why do sugars tend to be highly water soluble?

Accepted Answer

A) because they have only a few hydroxyl groups 
B) because of their large numbers of hydroxyl groups 
C) because of their large numbers of sulfhydryl groups 
D) because of their large numbers of methyl groups 
E) because of their small molecular weights 
A) because they have only a few hydroxyl groups 
B) because of their large numbers of hydroxyl groups 
C) because of their large numbers of sulfhydryl groups 
D) because of their large numbers of methyl groups 
E) because of their small molecular weights

Question 18

What is now thought to have been the genetic material in the first living organisms on Earth?

Accepted Answer

A) RNA 
B) DNA 
C) protein 
D) polypeptides 
A) RNA 
B) DNA 
C) protein 
D) polypeptides

Question 19

What bond is responsible for the branch points in glycogen and amylopectin?

Accepted Answer

A) $\alpha$ (1->4)glycosidic linkages 
B) $\beta$ (1->4)glycosidic linkages 
C) $\alpha$ (1->6)glycosidic linkages 
D) $\beta$ (1->6)glycosidic linkages 
E) 3'-5' phosphodiester linkages 
A) $\alpha$ (1->4)glycosidic linkages 
B) $\beta$ (1->4)glycosidic linkages 
C) $\alpha$ (1->6)glycosidic linkages 
D) $\beta$ (1->6)glycosidic linkages 
E) 3'-5' phosphodiester linkages

Question 20

Would all proteins be likely to require exposure to mercaptoethanol in order to accomplish full denaturation? If not,what trait would a protein that did not require mercaptoethanol possess?

Accepted Answer

Not all proteins would require

How do amino acids like hydroxylysine and thyroxine,which are not among the 20 amino acids that are inserted into proteins,get into proteins?

What kind of bond results from an unequal sharing of electrons?

The low-molecular-weight building blocks of polymers are called _______.

Which of the following groups is capable of only hydrophilic interactions?

Tertiary structure in DNA is also known as ________.

What human disease was found to be similar to kuru in the brain abnormalities it caused? What disease in sheep contributes its name to the abnormal prion molecule,PrPSC? What have been the causes of outbreaks of acquired CJD?

Which of the following is not a macromolecule formed by polymerization?

Not all proteins are able to renature.Some proteins when exposed to heat or some other denaturing treatment are irreversibly denatured.What is an example of such a protein?

If mice are maintained on very strict diets with reduced caloric intake,what happens to their life span as compared to littermates fed diets with normal caloric content? What is a possible explanation for the effect of this diet on these animals?

Which of the groups below is capable of only hydrophobic interactions? Explain your answer.Which is capable of only hydrophilic interactions? Explain your answer.

How was it proved that the brains of patients suffering from CJD,an inherited disease,contain an infectious agent?

Which interaction is most important in enhancing the solubility of macromolecules in water?

What is spongiform encephalopathy?

Which polysaccharide bond cannot be broken by mammalian enzymes that normally digest polysaccharides?

What enzyme is responsible for the destruction of a type of free radical formed when molecular oxygen picks up an extra electron?

Which of the following is a nucleotide?

Why do sugars tend to be highly water soluble?

What is now thought to have been the genetic material in the first living organisms on Earth?

What bond is responsible for the branch points in glycogen and amylopectin?

Would all proteins be likely to require exposure to mercaptoethanol in order to accomplish full denaturation? If not,what trait would a protein that did not require mercaptoethanol possess?

Introduction to the Study of Cell and Molecular Biology

Bioenergetics, Enzymes, and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, Function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

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Exam 2: The Chemical Basis of Life

How do amino acids like hydroxylysine and thyroxine,which are not among the 20 amino acids that are inserted into proteins,get into proteins?

What kind of bond results from an unequal sharing of electrons?

The low-molecular-weight building blocks of polymers are called _______.

Which of the following groups is capable of only hydrophilic interactions?

Tertiary structure in DNA is also known as ________.

What human disease was found to be similar to kuru in the brain abnormalities it caused? What disease in sheep contributes its name to the abnormal prion molecule,PrPSC? What have been the causes of outbreaks of acquired CJD?

Which of the following is not a macromolecule formed by polymerization?

Not all proteins are able to renature.Some proteins when exposed to heat or some other denaturing treatment are irreversibly denatured.What is an example of such a protein?

If mice are maintained on very strict diets with reduced caloric intake,what happens to their life span as compared to littermates fed diets with normal caloric content? What is a possible explanation for the effect of this diet on these animals?

Which of the groups below is capable of only hydrophobic interactions? Explain your answer.Which is capable of only hydrophilic interactions? Explain your answer.

How was it proved that the brains of patients suffering from CJD,an inherited disease,contain an infectious agent?

Which interaction is most important in enhancing the solubility of macromolecules in water?

What is spongiform encephalopathy?

Which polysaccharide bond cannot be broken by mammalian enzymes that normally digest polysaccharides?

What enzyme is responsible for the destruction of a type of free radical formed when molecular oxygen picks up an extra electron?

Which of the following is a nucleotide?

Why do sugars tend to be highly water soluble?

What is now thought to have been the genetic material in the first living organisms on Earth?

What bond is responsible for the branch points in glycogen and amylopectin?

Would all proteins be likely to require exposure to mercaptoethanol in order to accomplish full denaturation? If not,what trait would a protein that did not require mercaptoethanol possess?

Introduction to the Study of Cell and Molecular Biology

Bioenergetics, Enzymes, and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, Function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters