Question 1

Protons and neutrons are located in the ________ of an atom.

Accepted Answer

The answer of Protons and neutrons are located in the...

Question 2

Match each of the following descriptions to the appropriate term. Each term may be used only once.
-alanine, glycine, cysteine

Accepted Answer

A) proton 
B) nucleic acids 
C) carbohydrates 
D) lipids 
E) isotopes
F)electrons
G)amino acids
H)atom
I)chemical bonds
J)matter
K)molecules
L)elements 
A) proton 
B) nucleic acids 
C) carbohydrates 
D) lipids 
E) isotopes
F)electrons
G)amino acids
H)atom
I)chemical bonds
J)matter
K)molecules
L)elements

Question 3

Match the following.
-dominant energy source used by cells

Accepted Answer

A) cholesterol 
B) unsaturated fat 
C) cellulose 
D) polypeptide 
E) glucose
F)saturated fat
G)DNA
H)glycogen 
A) cholesterol 
B) unsaturated fat 
C) cellulose 
D) polypeptide 
E) glucose
F)saturated fat
G)DNA
H)glycogen

Question 4

When water is released from a dam, potential energy is converted to chemical energy.

Accepted Answer

A) True 
 B)False

Question 5

In order for a cell to produce a fat, it must have one molecule of ________ and three ________.

Accepted Answer

glycerol;

Question 6

The acidity or alkalinity of a solution can be measured in terms of ________.

Accepted Answer

The answer of The acidity or alkalinity of a solution...

Question 7

DNA differs from RNA in that DNA

Accepted Answer

A)  is single stranded. 
B)  contains deoxyribose. 
C)  is made up of nucleotides. 
D)  contains cytosine. 
E)  contains phosphates. 
A)  is single stranded. 
B)  contains deoxyribose. 
C)  is made up of nucleotides. 
D)  contains cytosine. 
E)  contains phosphates.

Question 8

Isotopes that give off energy and emit particles are known as ________.

Accepted Answer

The answer of Isotopes that give off energy and emit...

Question 9

A diet rich in ________ fat is believed to contribute to the development of cardiovascular disease.

Accepted Answer

The answer of A diet rich in ________ fat is...

Question 10

The molecule that an enzyme reacts with is a ________.

Accepted Answer

substrate

Question 11

Which one of the following is TRUE regarding enzymes?

Accepted Answer

A)  Enzyme function is not affected by changes in temperature or pH. 
B)  Enzymes slow the rate of chemical reactions in living systems. 
C)  Enzymes are consumed in a chemical reaction, so an organism must constantly replace these enzymes. 
D)  Each enzyme catalyzes one specific reaction or group of reactions. 
E)  Enzymes convert products into reactants. 
A)  Enzyme function is not affected by changes in temperature or pH. 
B)  Enzymes slow the rate of chemical reactions in living systems. 
C)  Enzymes are consumed in a chemical reaction, so an organism must constantly replace these enzymes. 
D)  Each enzyme catalyzes one specific reaction or group of reactions. 
E)  Enzymes convert products into reactants.

Question 12

Ions in body fluids of a human are referred to as

Accepted Answer

A)  electrolytes. 
B)  osmolytes. 
C)  isotopes. 
D)  atoms. 
A)  electrolytes. 
B)  osmolytes. 
C)  isotopes. 
D)  atoms.

Question 13

Which one of the following statements accurately describes hydrolysis reactions in biological systems?

Accepted Answer

A)  Hydrolysis reactions enable the breakdown of food molecules during digestion. 
B)  Hydrolysis reactions enable small molecules to be joined to form larger molecules. 
C)  Hydrolysis reactions generally require substantial input of energy. 
D)  Hydrolysis reactions are spontaneous and don't require catalysis by enzymes. 
E)  Hydrolysis reactions generally occur for the purpose of energy storage. 
A)  Hydrolysis reactions enable the breakdown of food molecules during digestion. 
B)  Hydrolysis reactions enable small molecules to be joined to form larger molecules. 
C)  Hydrolysis reactions generally require substantial input of energy. 
D)  Hydrolysis reactions are spontaneous and don't require catalysis by enzymes. 
E)  Hydrolysis reactions generally occur for the purpose of energy storage.

Question 14

Match the following.
-major structural polysaccharide produced by plants

Accepted Answer

A) cholesterol 
B) unsaturated fat 
C) cellulose 
D) polypeptide 
E) glucose
F)saturated fat
G)DNA
H)glycogen 
A) cholesterol 
B) unsaturated fat 
C) cellulose 
D) polypeptide 
E) glucose
F)saturated fat
G)DNA
H)glycogen

Question 15

Lactose is a(n)

Accepted Answer

A)  ribose. 
B)  monosaccharide. 
C)  oligosaccharide. 
D)  polysaccharide. 
E)  starch. 
A)  ribose. 
B)  monosaccharide. 
C)  oligosaccharide. 
D)  polysaccharide. 
E)  starch.

Question 16

Electrons are smaller than protons, are negatively charged, and orbit the nucleus.

Accepted Answer

A) True 
 B)False

Question 17

Which one of the following is TRUE regarding macromolecules?

Accepted Answer

A)  Cells cannot use macromolecules to signal other cells. 
B)  An example of a macromolecule is H2O. 
C)  Cells produce macromolecules by the process of hydrolysis. 
D)  Macromolecules are broken down by hydration synthesis. 
E)  Cells use certain macromolecules to store energy. 
A)  Cells cannot use macromolecules to signal other cells. 
B)  An example of a macromolecule is H2O. 
C)  Cells produce macromolecules by the process of hydrolysis. 
D)  Macromolecules are broken down by hydration synthesis. 
E)  Cells use certain macromolecules to store energy.

Question 18

Proteins that function as a catalyst

Accepted Answer

A)  slow down the speed at which chemical reactions occur but do not alter the final products formed. 
B)  facilitate chemical reactions by altering the final products formed. 
C)  maintain primary structure. 
D)  can participate only in reactions that synthesize new products. 
E)  are referred to as enzymes. 
A)  slow down the speed at which chemical reactions occur but do not alter the final products formed. 
B)  facilitate chemical reactions by altering the final products formed. 
C)  maintain primary structure. 
D)  can participate only in reactions that synthesize new products. 
E)  are referred to as enzymes.

Question 19

An example of potential energy is/are

Accepted Answer

A)  bonds that hold atoms together. 
B)  energy for creating new molecules. 
C)  dancing. 
D)  running a marathon. 
A)  bonds that hold atoms together. 
B)  energy for creating new molecules. 
C)  dancing. 
D)  running a marathon.

Question 20

A mad scientist has ripped apart an atom and collected all the subatomic particles located in the nucleus of the atom. Which one of the following has he collected?

Accepted Answer

A)  electrons 
B)  protons 
C)  protons and neutrons 
D)  electrons and protons 
E)  neutrons and electrons 
A)  electrons 
B)  protons 
C)  protons and neutrons 
D)  electrons and protons 
E)  neutrons and electrons

Exam 2: The Chemistry of Living Things

Protons and neutrons are located in the ________ of an atom.

Match each of the following descriptions to the appropriate term. Each term may be used only once. -alanine, glycine, cysteine

Match the following. -dominant energy source used by cells

When water is released from a dam, potential energy is converted to chemical energy.

In order for a cell to produce a fat, it must have one molecule of ________ and three ________.

The acidity or alkalinity of a solution can be measured in terms of ________.

DNA differs from RNA in that DNA

Isotopes that give off energy and emit particles are known as ________.

A diet rich in ________ fat is believed to contribute to the development of cardiovascular disease.

The molecule that an enzyme reacts with is a ________.

Which one of the following is TRUE regarding enzymes?

Ions in body fluids of a human are referred to as

Which one of the following statements accurately describes hydrolysis reactions in biological systems?

Match the following. -major structural polysaccharide produced by plants

Lactose is a(n)

Electrons are smaller than protons, are negatively charged, and orbit the nucleus.

Which one of the following is TRUE regarding macromolecules?

Proteins that function as a catalyst

An example of potential energy is/are

A mad scientist has ripped apart an atom and collected all the subatomic particles located in the nucleus of the atom. Which one of the following has he collected?

Human Biology, Science, and Society

Structure and Function of Cells

From Cells to Organ Systems

The Skeletal System

The Muscular System

Blood

Heart and Blood Vessels

The Immune System and Mechanisms of Defense

The Respiratory System: Exchange of Gases

The Nervous System: Integration and Control

Sensory Mechanisms

The Endocrine System

The Digestive System and Nutrition

The Urinary System

Reproductive Systems

Cell Reproduction and Differentiation

Cancer: Uncontrolled Cell Division and Differentiation

Genetics and Inheritance

DNA Technology and Genetic Engineering

Development and Aging

Evolution and the Origins of Life

Ecosystems and Populations

Human Impacts, Biodiversity, and Environmental Issues

Filters

In order for a cell to produce a fat, it must have one molecule of and three .