Question 1

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 2

Cell membranes of living systems are commonly made of a____________________.

Accepted Answer

The answer of Cell membranes of living systems are commonly...

Question 3

Classification. The following are basic building blocks of biopolymers. Match the building blocks with the statements below.
 
-The basic unit of DNA

Accepted Answer

A) Amino acid 
B) Glucose 
C) Carboxyl head 
D) Fatty acid tail 
E) Nucleotide 
A) Amino acid 
B) Glucose 
C) Carboxyl head 
D) Fatty acid tail 
E) Nucleotide

Question 4

Bonds between which groups stabilize the structure of many proteins,including those that make up human hair?

Accepted Answer

A)  Aldehyde 
B)  Sulfhydryl 
C)  Hydroxyl 
D)  Methyl 
E)  Carbonyl 
A)  Aldehyde 
B)  Sulfhydryl 
C)  Hydroxyl 
D)  Methyl 
E)  Carbonyl

Question 5

Classification. The following are chemical functional groups that may be part of a biologically active molecule. Answer the questions by matching the items with the most appropriate group.
-Fatty acid "head"

Accepted Answer

A) -COOH 
B) -CH3 
C) -NH2 
D) -OH 
E)  
F)-PO4-
G)-CHO 
A) -COOH 
B) -CH3 
C) -NH2 
D) -OH 
E)  
F)-PO4-
G)-CHO

Question 6

Choose the monomer corresponding to the polymer stated.
 
-Glycogen

Accepted Answer

A) Glucose 
B) Nucleotide 
C) Fatty acid 
D) Amino acid 
A) Glucose 
B) Nucleotide 
C) Fatty acid 
D) Amino acid

Question 7

A denatured protein has lost its _____________________.

Accepted Answer

3D structu

Question 8

The honeycomb made by bees is made up primarily of ____.

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

Choose the most appropriate description for each item.
-Phospholipids

Accepted Answer

A) A six-carbon sugar 
B) Found in DNA and RNA 
C) Principal components of cell membranes 
D) Affect metabolic reaction rates 
A) A six-carbon sugar 
B) Found in DNA and RNA 
C) Principal components of cell membranes 
D) Affect metabolic reaction rates

Question 10

Classification. The following are chemical functional groups that may be part of a biologically active molecule. Answer the questions by matching the items with the most appropriate group.
-The group typical of energy carriers such as ATP

Accepted Answer

A) -COOH 
B) -CH3 
C) -NH2 
D) -OH 
E)  
F)-PO4-
G)-CHO 
A) -COOH 
B) -CH3 
C) -NH2 
D) -OH 
E)  
F)-PO4-
G)-CHO

Question 11

An -NH2 group is a(n)____ group.

Accepted Answer

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

Question 12

Match the molecules below with their functions.

-Main component of cell membranes

Accepted Answer

A) Glycogen 
B) Cellulose 
C) Starch 
D) Phospholipid 
E) Wax
F)Steroid
G)Cholesterol
H)DNA
I)RNA 
A) Glycogen 
B) Cellulose 
C) Starch 
D) Phospholipid 
E) Wax
F)Steroid
G)Cholesterol
H)DNA
I)RNA

Question 13

A hydrolysis reaction results in ____.

Accepted Answer

A)  bond formation of a macromolecule 
B)  bond breakage of a macromolecule 
C)  lipid molecule creation 
D)  nucleic acids creation 
E)  most macromolecules 
A)  bond formation of a macromolecule 
B)  bond breakage of a macromolecule 
C)  lipid molecule creation 
D)  nucleic acids creation 
E)  most macromolecules

Question 14

Fructose and glucose are both ____.

Accepted Answer

A)  six-carbon sugars 
B)  disaccharides 
C)  monosaccharides 
D)  disaccharides and six-carbon sugars 
E)  monosaccharides and six-carbon sugars 
A)  six-carbon sugars 
B)  disaccharides 
C)  monosaccharides 
D)  disaccharides and six-carbon sugars 
E)  monosaccharides and six-carbon sugars

Question 15

Choose the most appropriate description for each item.
-Nucleotides

Accepted Answer

A) A six-carbon sugar 
B) Found in DNA and RNA 
C) Principal components of cell membranes 
D) Affect metabolic reaction rates 
A) A six-carbon sugar 
B) Found in DNA and RNA 
C) Principal components of cell membranes 
D) Affect metabolic reaction rates

Question 16

Match the molecules below with their functions.

-Main storage carbohydrate in animals

Accepted Answer

A) Glycogen 
B) Cellulose 
C) Starch 
D) Phospholipid 
E) Wax
F)Steroid
G)Cholesterol
H)DNA
I)RNA 
A) Glycogen 
B) Cellulose 
C) Starch 
D) Phospholipid 
E) Wax
F)Steroid
G)Cholesterol
H)DNA
I)RNA

Question 17

Lipids ____.

Accepted Answer

A)  yield less energy per gram than do carbohydrates 
B)  include cartilage and chitin 
C)  include fats consisting of three fatty-acid molecules and one glycerol molecule 
D)  are composed of monosaccharides 
E)  are only found in animals 
A)  yield less energy per gram than do carbohydrates 
B)  include cartilage and chitin 
C)  include fats consisting of three fatty-acid molecules and one glycerol molecule 
D)  are composed of monosaccharides 
E)  are only found in animals

Question 18

Which of the following is found in every nucleotide?

Accepted Answer

A)  Ribose 
B)  A single phosphate group 
C)  A single carbon ring 
D)  A double nitrogen ring 
E)  Nitrogen 
A)  Ribose 
B)  A single phosphate group 
C)  A single carbon ring 
D)  A double nitrogen ring 
E)  Nitrogen

Question 19

Which molecule is incorrectly matched with its monomer?

Accepted Answer

A)  Fat; fatty acid 
B)  Starch; fructose 
C)  Protein; amino acid 
D)  Cellulose; glucose 
E)  Nucleic acids; nucleotide 
A)  Fat; fatty acid 
B)  Starch; fructose 
C)  Protein; amino acid 
D)  Cellulose; glucose 
E)  Nucleic acids; nucleotide

Question 20

A helix is one possible ____ structure of ____.

Accepted Answer

A)  primary; proteins 
B)  primary; carbohydrates 
C)  primary; lipids 
D)  secondary; nucleic acids 
E)  tertiary; proteins 
A)  primary; proteins 
B)  primary; carbohydrates 
C)  primary; lipids 
D)  secondary; nucleic acids 
E)  tertiary; proteins

Exam 3: Molecules of Life

All steroids have ____.

Cell membranes of living systems are commonly made of a____________________.

Classification. The following are basic building blocks of biopolymers. Match the building blocks with the statements below. -The basic unit of DNA

Bonds between which groups stabilize the structure of many proteins,including those that make up human hair?

Classification. The following are chemical functional groups that may be part of a biologically active molecule. Answer the questions by matching the items with the most appropriate group. -Fatty acid "head"

Choose the monomer corresponding to the polymer stated. -Glycogen

A denatured protein has lost its _____________________.

The honeycomb made by bees is made up primarily of ____.

Choose the most appropriate description for each item. -Phospholipids

Classification. The following are chemical functional groups that may be part of a biologically active molecule. Answer the questions by matching the items with the most appropriate group. -The group typical of energy carriers such as ATP

An -NH2 group is a(n)____ group.

Match the molecules below with their functions. -Main component of cell membranes

A hydrolysis reaction results in ____.

Fructose and glucose are both ____.

Choose the most appropriate description for each item. -Nucleotides

Match the molecules below with their functions. -Main storage carbohydrate in animals

Lipids ____.

Which of the following is found in every nucleotide?

Which molecule is incorrectly matched with its monomer?

A helix is one possible ____ structure of ____.

Invitation to Biology

Life's Chemical Bases

Cell Structure

Ground Rules of Metabolism

Where it Starts—Photosynthesis

How Cells Release Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizing Information about Species

Life's Origin and Early Evolution

Viruses, Bacteria, and Archaea

Protists: The Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution: The Invertebrates

Animal Evolution: The Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive System

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters

An -NH₂ group is a(n)____ group.

A helix is one possible structure of .