Question 1

Hydrogen bonding is most important in stabilizing the ________ structure of many proteins.

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary 
E) primary,secondary,tertiary,and quaternary 
A) primary 
B) secondary 
C) tertiary 
D) quaternary 
E) primary,secondary,tertiary,and quaternary

Question 2

The primary structure of a protein

Accepted Answer

A) is important for determining the secondary and tertiary structure of a protein. 
B) is simply the order of amino acids from one end of the protein to another. 
C) is important both genetically and structurally. 
D) is the linear sequence of amino acids that are linked together by peptide bonds. 
E) All of these statements are true. 
A) is important for determining the secondary and tertiary structure of a protein. 
B) is simply the order of amino acids from one end of the protein to another. 
C) is important both genetically and structurally. 
D) is the linear sequence of amino acids that are linked together by peptide bonds. 
E) All of these statements are true.

Question 3

Nucleotides are to nucleic acids as amino acids are to ________.

Accepted Answer

The answer of Nucleotides are to nucleic acids as amino...

Question 4

Which of the following statements is false?

Accepted Answer

A) There are more than 60 different kinds of amino acids present in cells. 
B) The R group of amino acids differs from one amino acid to another. 
C) Only around 20 amino acids are used in protein synthesis. 
D) Equal amounts of D- and L-amino acids are found in cells. 
E) An amino acid has an N-terminus,a C-terminus,and an R group. 
A) There are more than 60 different kinds of amino acids present in cells. 
B) The R group of amino acids differs from one amino acid to another. 
C) Only around 20 amino acids are used in protein synthesis. 
D) Equal amounts of D- and L-amino acids are found in cells. 
E) An amino acid has an N-terminus,a C-terminus,and an R group.

Question 5

A ________,a ________,and a ________ are the major parts of a nucleotide,whereas a ________ and a ________ are the major parts of a nucleoside.

Accepted Answer

phosphate group,pentose sugar

Question 6

What are the three general types of amino acids?

Accepted Answer

A) α helices,β sheets,and looped segments 
B) covalent,noncovalent,and van der Waals forces 
C) positive,negative,and noncharged 
D) hydrophobic,polar (noncharged),polar (charged) 
E) acidic,basic,and neutral 
A) α helices,β sheets,and looped segments 
B) covalent,noncovalent,and van der Waals forces 
C) positive,negative,and noncharged 
D) hydrophobic,polar (noncharged),polar (charged) 
E) acidic,basic,and neutral

Question 7

The ________ projection illustrates saccharides as linear,whereas the ________ projection suggests the spatial relationships of saccharides.

Accepted Answer

The answer of The ________ projection illustrates saccharides as linear,whereas...

Question 8

Which of the following is true of purines?

Accepted Answer

A) Cytosine is a purine. 
B) Adenine's bonding to thymine is stronger than is guanine's to cytosine. 
C) Purines have a double-ringed structure. 
D) Both adenine and thymine are purines. 
E) Purines bind readily to deoxyribose but not to ribose. 
A) Cytosine is a purine. 
B) Adenine's bonding to thymine is stronger than is guanine's to cytosine. 
C) Purines have a double-ringed structure. 
D) Both adenine and thymine are purines. 
E) Purines bind readily to deoxyribose but not to ribose.

Question 9

________ is the major storage polysaccharide for animals,while ________ is the major storage polysaccharide for plants.

Accepted Answer

The answer of ________ is the major storage polysaccharide for...

Question 10

________ fatty acids are liquid at room temperature,while ________ fatty acids are solid.

Accepted Answer

Unsaturate

Question 11

To which of the following classes of sugars does glucose belong?

Accepted Answer

A) pentose 
B) hexose 
C) tetrose 
D) heptose 
E) triose 
A) pentose 
B) hexose 
C) tetrose 
D) heptose 
E) triose

Question 12

________ and ________ are the two kinds of sugars found in bacterial cell walls.

Accepted Answer

N-acetylglucosamine

Question 13

Cellulose is a polymer of ________,a common monosaccharide.

Accepted Answer

The answer of Cellulose is a polymer of ________,a common...

Question 14

Cellulose belongs to which of the following groups of macromolecules?

Accepted Answer

A) lipids 
B) carbohydrates 
C) proteins 
D) nucleic acids 
E) none of these 
A) lipids 
B) carbohydrates 
C) proteins 
D) nucleic acids 
E) none of these

Question 15

Which of the following has the greatest number of glycosidic bonds?

Accepted Answer

A) glucose 
B) triacylglycerol 
C) amylose 
D) DNA 
E) vitamin A 
A) glucose 
B) triacylglycerol 
C) amylose 
D) DNA 
E) vitamin A

Question 16

Which of the following statements is true?

Accepted Answer

A) Fatty acids are synthesized by the stepwise addition of three carbon units. 
B) Unsaturated fatty acids are usually branched. 
C) Fatty acids with 24 carbons are most common. 
D) Saturated fatty acids have no double bonds between carbons. 
E) Hormones are unsaturated fatty acids. 
A) Fatty acids are synthesized by the stepwise addition of three carbon units. 
B) Unsaturated fatty acids are usually branched. 
C) Fatty acids with 24 carbons are most common. 
D) Saturated fatty acids have no double bonds between carbons. 
E) Hormones are unsaturated fatty acids.

Question 17

Trans fats

Accepted Answer

A) are unsaturated fatty acids. 
B) resemble saturated fatty acids in shape. 
C) are associated with an increased risk of heart disease. 
D) are present in small amounts in meat and dairy products. 
E) All of these statements are true. 
A) are unsaturated fatty acids. 
B) resemble saturated fatty acids in shape. 
C) are associated with an increased risk of heart disease. 
D) are present in small amounts in meat and dairy products. 
E) All of these statements are true.

Question 18

The two strands of DNA are held together by ________; thus ________.

Accepted Answer

A) covalent bonds; double-stranded DNA is very stable at a range of temperatures 
B) ionic bonds; double-stranded DNA separates into two separate strands in water 
C) hydrogen bonds; double-stranded DNA separates into two separate strands at high temperatures 
D) antiparallel bonds; double-stranded DNA is amphipathic 
E) hydrophobic interactions; double-stranded DNA separates into two separate strands when dissolved in a hydrocarbon (hydrophobic)solvent 
A) covalent bonds; double-stranded DNA is very stable at a range of temperatures 
B) ionic bonds; double-stranded DNA separates into two separate strands in water 
C) hydrogen bonds; double-stranded DNA separates into two separate strands at high temperatures 
D) antiparallel bonds; double-stranded DNA is amphipathic 
E) hydrophobic interactions; double-stranded DNA separates into two separate strands when dissolved in a hydrocarbon (hydrophobic)solvent

Exam 3: The Macromolecules of the Cell

Hydrogen bonding is most important in stabilizing the ________ structure of many proteins.

The primary structure of a protein

Nucleotides are to nucleic acids as amino acids are to ________.

Which of the following statements is false?

A ________,a ________,and a ________ are the major parts of a nucleotide,whereas a ________ and a ________ are the major parts of a nucleoside.

What are the three general types of amino acids?

The ________ projection illustrates saccharides as linear,whereas the ________ projection suggests the spatial relationships of saccharides.

Which of the following is true of purines?

________ is the major storage polysaccharide for animals,while ________ is the major storage polysaccharide for plants.

________ fatty acids are liquid at room temperature,while ________ fatty acids are solid.

To which of the following classes of sugars does glucose belong?

________ and ________ are the two kinds of sugars found in bacterial cell walls.

Cellulose is a polymer of ________,a common monosaccharide.

Cellulose belongs to which of the following groups of macromolecules?

Which of the following has the greatest number of glycosidic bonds?

Which of the following statements is true?

Trans fats

The two strands of DNA are held together by ________; thus ________.

A Preview of Cell Biology

The Chemistry of the Cell

Cells and Organelles

Bioenergetics: the Flow of Energy in the Cell

Enzymes: the Catalysts of Life

Membranes: Their Structure,function,and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

Phototrophic Energy Metabolism: Photosynthesis

The Endomembrane System

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: Dna, chromosomes, and the Nucleus

DNA Replication, repair, and Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Molecular Biology Techniques for Cell Biology

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

The Cell Cycle and Mitosis

Sexual Reproduction,meiosis,and Genetic Recombination

Filters

A ,a ,and a are the major parts of a nucleotide,whereas a and a are the major parts of a nucleoside.

The projection illustrates saccharides as linear,whereas the projection suggests the spatial relationships of saccharides.

is the major storage polysaccharide for animals,while is the major storage polysaccharide for plants.

fatty acids are liquid at room temperature,while fatty acids are solid.

and are the two kinds of sugars found in bacterial cell walls.

The two strands of DNA are held together by ; thus .