Question 1

Sugars are characterized by all EXCEPT which one of the following functional groups?

Accepted Answer

A) hydroxyl 
B) carbonyl 
C) ketone 
D) aldehyde 
E) methyl 
A) hydroxyl 
B) carbonyl 
C) ketone 
D) aldehyde 
E) methyl

Question 2

The secondary structure of proteins may take the form of

Accepted Answer

A) twists. 
B) bends. 
C) loops. 
D) folds. 
E) all of these. 
A) twists. 
B) bends. 
C) loops. 
D) folds. 
E) all of these.

Question 3

Glucose and sugars in DNA and RNA

Accepted Answer

A) have the same number of carbon atoms. 
B) have the same structural formulas. 
C) are the two components of sucrose. 
D) are monosaccharides. 
E) are both components of RNA. 
A) have the same number of carbon atoms. 
B) have the same structural formulas. 
C) are the two components of sucrose. 
D) are monosaccharides. 
E) are both components of RNA.

Question 4

Fats are major constituents of

Accepted Answer

A) proteins. 
B) genes. 
C) photosynthesis. 
D) cell membranes. 
E) all of these. 
A) proteins. 
B) genes. 
C) photosynthesis. 
D) cell membranes. 
E) all of these.

Question 5

All steroids have

Accepted Answer

A) the same number of double bonds. 
B) one or more fatty acids. 
C) four rings of carbon to which other atoms are attached. 
D) the same functional groups. 
E) the same number and positions of double bonds. 
A) the same number of double bonds. 
B) one or more fatty acids. 
C) four rings of carbon to which other atoms are attached. 
D) the same functional groups. 
E) the same number and positions of double bonds.

Question 6

Trans fats are found in

Accepted Answer

A) small amounts in red meats. 
B) large amounts in partially hydrogenated oils. 
C) dairy products. 
D) alcoholic drinks. 
E) A, B, and C are correct. 
A) small amounts in red meats. 
B) large amounts in partially hydrogenated oils. 
C) dairy products. 
D) alcoholic drinks. 
E) A, B, and C are correct.

Question 7

The interaction of several polypeptide chains in a hemoglobin molecule is its __________ structure.

Accepted Answer

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

Question 8

In the figure below, the object on which the bee is standing, has a majority of which of the following:

Accepted Answer

A) carbohydrates 
B) nucleotides 
C) proteins 
D) lipids 
E) amino acids 
A) carbohydrates 
B) nucleotides 
C) proteins 
D) lipids 
E) amino acids

Question 9

The three most common atoms in the human body are

Accepted Answer

A) hydrogen, oxygen, and carbon. 
B) carbon, hydrogen, and nitrogen. 
C) carbon, nitrogen, and oxygen. 
D) nitrogen, hydrogen, and oxygen. 
E) carbon, oxygen, and sulfur. 
A) hydrogen, oxygen, and carbon. 
B) carbon, hydrogen, and nitrogen. 
C) carbon, nitrogen, and oxygen. 
D) nitrogen, hydrogen, and oxygen. 
E) carbon, oxygen, and sulfur.

Question 10

Nucleotides are found in

Accepted Answer

A) proteins. 
B) steroids. 
C) lipids. 
D) ATP, DNA, andRNA. 
E) carbohydrates. 
A) proteins. 
B) steroids. 
C) lipids. 
D) ATP, DNA, andRNA. 
E) carbohydrates.

Question 11

When glucose is in short supply, plants will quickly hydrolyze

Accepted Answer

A) glycogen. 
B) starch. 
C) cellulose. 
D) sucrose. 
E) fructose. 
A) glycogen. 
B) starch. 
C) cellulose. 
D) sucrose. 
E) fructose.

Question 12

Which of the following is composed of a 1:2:1 ratio of carbon to hydrogen to oxygen?

Accepted Answer

A) carbohydrate 
B) protein 
C) lipid 
D) nucleic acid 
E) steroid 
A) carbohydrate 
B) protein 
C) lipid 
D) nucleic acid 
E) steroid

Question 13

Primary protein structure is formed by

Accepted Answer

A) hydrophobic interactions. 
B) hydrogen bonds. 
C) bonds between amino acids. 
D) covalent linkages between carbon and oxygen. 
E) all of these. 
A) hydrophobic interactions. 
B) hydrogen bonds. 
C) bonds between amino acids. 
D) covalent linkages between carbon and oxygen. 
E) all of these.

Question 14

Typical fat molecules have __________ tail(s).

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 15

An -OH group is a(n) __________ group.

Accepted Answer

A) carboxyl 
B) hydroxyl 
C) amino 
D) methyl 
E) carbonyl 
A) carboxyl 
B) hydroxyl 
C) amino 
D) methyl 
E) carbonyl

Question 16

Cholesterol is

Accepted Answer

A) synthesized in the large intestine. 
B) remodeled into vitamin A. 
C) used in the construction of cell membranes. 
D) a component of plant cell walls. 
E) all of these. 
A) synthesized in the large intestine. 
B) remodeled into vitamin A. 
C) used in the construction of cell membranes. 
D) a component of plant cell walls. 
E) all of these.

Question 17

Although carbon dioxide contains carbon, it is not considered an "organic" compound because

Accepted Answer

A) it is not found in the earth's crust. 
B) it is not present in living cells. 
C) the carbon atom is not bonded to at least one hydrogen atom. 
D) the carbons are not in chains or rings. 
E) it is too small. 
A) it is not found in the earth's crust. 
B) it is not present in living cells. 
C) the carbon atom is not bonded to at least one hydrogen atom. 
D) the carbons are not in chains or rings. 
E) it is too small.

Question 18

Hardening of the arteries is also known as

Accepted Answer

A) atherosclerosis. 
B) apoptosis. 
C) abuildosis. 
D) keritosis. 
E) all of these. 
A) atherosclerosis. 
B) apoptosis. 
C) abuildosis. 
D) keritosis. 
E) all of these.

Question 19

Polyunsaturated fats

Accepted Answer

A) have fewer hydrogen atoms than do saturated fats. 
B) are more characteristic of animal fats than plant fats. 
C) have no double bonds. 
D) are solid at room temperature. 
E) are none of these. 
A) have fewer hydrogen atoms than do saturated fats. 
B) are more characteristic of animal fats than plant fats. 
C) have no double bonds. 
D) are solid at room temperature. 
E) are none of these.

Question 20

Which of the following includes all the others?

Accepted Answer

A) sucrose 
B) glucose 
C) cellulose 
D) glycogen 
E) carbohydrate 
A) sucrose 
B) glucose 
C) cellulose 
D) glycogen 
E) carbohydrate

Exam 3: Molecules of Life

Sugars are characterized by all EXCEPT which one of the following functional groups?

The secondary structure of proteins may take the form of

Glucose and sugars in DNA and RNA

Fats are major constituents of

All steroids have

Trans fats are found in

The interaction of several polypeptide chains in a hemoglobin molecule is its __________ structure.

In the figure below, the object on which the bee is standing, has a majority of which of the following:

The three most common atoms in the human body are

Nucleotides are found in

When glucose is in short supply, plants will quickly hydrolyze

Which of the following is composed of a 1:2:1 ratio of carbon to hydrogen to oxygen?

Primary protein structure is formed by

Typical fat molecules have __________ tail(s).

An -OH group is a(n) __________ group.

Cholesterol is

Although carbon dioxide contains carbon, it is not considered an "organic" compound because

Hardening of the arteries is also known as

Polyunsaturated fats

Which of the following includes all the others?

Invitation to Biology

Lifes Chemical Basis

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

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