Question 1

Which of the following is the major function of DNA?

Accepted Answer

A) catalyzes metabolic reactions 
B) storage of energy transfers energy for cellular metabolism 
C) transfer information carries genetic code needed for protein synthesis 
D) long-term storage of information for carries inherited genetic code that controls protein synthesis 
E) transports of electrolytes 
A) catalyzes metabolic reactions 
B) storage of energy transfers energy for cellular metabolism 
C) transfer information carries genetic code needed for protein synthesis 
D) long-term storage of information for carries inherited genetic code that controls protein synthesis 
E) transports of electrolytes

Question 2

The characteristics listed below represent which element in the periodic table?
1)7 valence electrons
2)easily gains an electron
3)most likely to form an anion
4)high electronegativity

Accepted Answer

A) sodium 
B) carbon 
C) chlorine 
D) nitrogen 
E) oxygen 
A) sodium 
B) carbon 
C) chlorine 
D) nitrogen 
E) oxygen

Question 3

What is the most abundant and most important inorganic compound in the body?

Accepted Answer

A) water 
B) oxygen gas 
C) carbon dioxide 
D) glucose 
E) DNA 
A) water 
B) oxygen gas 
C) carbon dioxide 
D) glucose 
E) DNA

Question 4

Describe what is happening at places 1,2 and 3 in the diagram.

Accepted Answer

This figure represents how an enzyme wor

Question 5

List three factors that increase the rate of chemical reactions.

Accepted Answer

Three factors that increase re

Question 6

Which term is defined as the capacity to do work?

Accepted Answer

A) metabolism 
B) electrolytes 
C) chemical reaction 
D) concentration 
E) energy 
A) metabolism 
B) electrolytes 
C) chemical reaction 
D) concentration 
E) energy

Question 7

Which of the following subatomic particles has/have a neutral charge?

Accepted Answer

A) neutron 
B) electron 
C) proton 
D) Both neutron and electron. 
E) All of these choices. 
A) neutron 
B) electron 
C) proton 
D) Both neutron and electron. 
E) All of these choices.

Question 8

Describe the structural characteristics of an amino acid.

Accepted Answer

Amino acids contain a central

Question 9

The primary structure of a protein consists of

Accepted Answer

A) alpha helices. 
B) beta-pleated sheets. 
C) three dimensional folded conformation. 
D) a sequence of amino acids linked by peptide bonds. 
E) the overall folded conformation of the protein's subunits. 
A) alpha helices. 
B) beta-pleated sheets. 
C) three dimensional folded conformation. 
D) a sequence of amino acids linked by peptide bonds. 
E) the overall folded conformation of the protein's subunits.

Question 10

An enzyme acts to

Accepted Answer

A) raise the activation energy needed to start the reaction. 
B) lower the activation energy needed to start the reaction. 
C) convert the activation energy into potential energy. 
D) convert the activation energy into kinetic energy. 
E) stop a chemical reaction. 
A) raise the activation energy needed to start the reaction. 
B) lower the activation energy needed to start the reaction. 
C) convert the activation energy into potential energy. 
D) convert the activation energy into kinetic energy. 
E) stop a chemical reaction.

Question 11

The initial energy "investment" needed to start a chemical reaction in a cell is called the

Accepted Answer

A) energy of products. 
B) energy of reactants. 
C) potential energy. 
D) Gibb's free energy. 
E) activation energy. 
A) energy of products. 
B) energy of reactants. 
C) potential energy. 
D) Gibb's free energy. 
E) activation energy.

Question 12

List the six major functions of proteins.

Accepted Answer

Proteins have 1)structural,2)r

Question 13

What functional groups are present on the molecule in the diagram.Choose all that apply.

Accepted Answer

A) Hydroxyl 
B) Carbonyl 
C) Carboxyl 
D) Ester 
E) Amino 
A) Hydroxyl 
B) Carbonyl 
C) Carboxyl 
D) Ester 
E) Amino

Question 14

Which type of chemical reaction will absorb more energy than it releases?

Accepted Answer

A) exergonic 
B) endergonic 
C) potential 
D) kinetic 
E) activation 
A) exergonic 
B) endergonic 
C) potential 
D) kinetic 
E) activation

Question 15

The R group of an amino acid would need to have what characteristic to be located in a cell membrane?

Accepted Answer

A) The R group would need to be polar 
B) The R group would need to be nonpolar 
C) The R group would need to be hydrophilic 
D) The R group has to ionize 
A) The R group would need to be polar 
B) The R group would need to be nonpolar 
C) The R group would need to be hydrophilic 
D) The R group has to ionize

Question 16

Which of the following can lower the amount of free radicals in the body?

Accepted Answer

A) x-rays 
B) ultraviolet radiation 
C) oxygen 
D) carbon tetrachloride 
E) antioxidants 
A) x-rays 
B) ultraviolet radiation 
C) oxygen 
D) carbon tetrachloride 
E) antioxidants

Question 17

A molecule with an unpaired electron in the outermost shell is called a(n)

Accepted Answer

A) compound. 
B) free radical. 
C) colloid. 
D) molecule. 
A) compound. 
B) free radical. 
C) colloid. 
D) molecule.

Question 18

Which monomer is used to build RNA and DNA?

Accepted Answer

A) fatty acid 
B) amino acid 
C) monosaccharide 
D) glycerol 
E) nucleotide 
A) fatty acid 
B) amino acid 
C) monosaccharide 
D) glycerol 
E) nucleotide

Question 19

Which of the following describes the major function of ATP in cells?

Accepted Answer

A) forms the building blocks for the synthesis of proteins. 
B) transfers energy for cell functions 
C) transfers information carries genetic code needed for protein synthesis 
D) stores information for carries inherited genetic code that controls protein synthesis 
E) transports fluids 
A) forms the building blocks for the synthesis of proteins. 
B) transfers energy for cell functions 
C) transfers information carries genetic code needed for protein synthesis 
D) stores information for carries inherited genetic code that controls protein synthesis 
E) transports fluids

Question 20

What is the difference between atomic mass,mass number and atomic number?

Accepted Answer

Atomic number is the number of protons f

Exam 2: The Chemical Level of Organization

Which of the following is the major function of DNA?

The characteristics listed below represent which element in the periodic table? 1)7 valence electrons 2)easily gains an electron 3)most likely to form an anion 4)high electronegativity

What is the most abundant and most important inorganic compound in the body?

Describe what is happening at places 1,2 and 3 in the diagram.

List three factors that increase the rate of chemical reactions.

Which term is defined as the capacity to do work?

Which of the following subatomic particles has/have a neutral charge?

Describe the structural characteristics of an amino acid.

The primary structure of a protein consists of

An enzyme acts to

The initial energy "investment" needed to start a chemical reaction in a cell is called the

List the six major functions of proteins.

What functional groups are present on the molecule in the diagram.Choose all that apply.

Which type of chemical reaction will absorb more energy than it releases?

The R group of an amino acid would need to have what characteristic to be located in a cell membrane?

Which of the following can lower the amount of free radicals in the body?

A molecule with an unpaired electron in the outermost shell is called a(n)

Which monomer is used to build RNA and DNA?

Which of the following describes the major function of ATP in cells?

What is the difference between atomic mass,mass number and atomic number?

An Introduction to the Human Body

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: The Appendicular Skeleton

Joints

Muscular Tissue

The Muscular System

Nervous Tissue

The Spinal Cord and Spinal Nerves

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor, and Integrative Systems

The Special Senses

The Endocrine System

The Cardiovascular System: the Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Nutrition

The Urinary System

Fluid, Electrolyte, and Acidbase Homeostasis

The Reproductive Systems

Development and Inheritance

Filters