Question 1

Amino acids are the building blocks for

Accepted Answer

A)  proteins. 
B)  carbohydrates. 
C)  nucleic acids. 
D)  fats. 
E)  steroids. 
A)  proteins. 
B)  carbohydrates. 
C)  nucleic acids. 
D)  fats. 
E)  steroids.

Question 2

Smoke from fossil fuels, motor vehicle exhaust, and nitrogen fertilizers can lead to

Accepted Answer

A)  greater cloud formation. 
B)  acid rain. 
C)  basic rain. 
D)  rain with high mineral content. 
E)  salted rain. 
A)  greater cloud formation. 
B)  acid rain. 
C)  basic rain. 
D)  rain with high mineral content. 
E)  salted rain.

Question 3

A buildup of H2CO3 in the blood will lead to

Accepted Answer

A)  alkalosis. 
B)  calcium buildup. 
C)  acidosis. 
D)  hydroxide ion increase. 
E)  HCO3 -  increase. 
A)  alkalosis. 
B)  calcium buildup. 
C)  acidosis. 
D)  hydroxide ion increase. 
E)  HCO3 -  increase.

Question 4

Which of the following includes all of the others?

Accepted Answer

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

Question 5

How many amino acids are known to exist?

Accepted Answer

A)  100 
B)  50 
C)  25 
D)  20 
E)  10 
A)  100 
B)  50 
C)  25 
D)  20 
E)  10

Question 6

The nucleotide most closely associated with energy is

Accepted Answer

A)  cyclic AMP. 
B)  FAD. 
C)  ATP. 
D)  NAD. 
E)  NADPH. 
A)  cyclic AMP. 
B)  FAD. 
C)  ATP. 
D)  NAD. 
E)  NADPH.

Question 7

The maximum number of electrons in a shell is

Accepted Answer

A)  two. 
B)  four. 
C)  six. 
D)  eight. 
E)  ten. 
A)  two. 
B)  four. 
C)  six. 
D)  eight. 
E)  ten.

Question 8

What is formed when an atom loses or gains an electron?

Accepted Answer

A)  a molecule 
B)  an ion 
C)  a compound 
D)  a mixture 
E)  a solvent 
A)  a molecule 
B)  an ion 
C)  a compound 
D)  a mixture 
E)  a solvent

Question 9

Which of the following would NOT be used in connection with the word acid ?

Accepted Answer

A)  excess hydrogen ions 
B)  contents of the stomach 
C)  magnesium hydroxide 
D)  pH less than 7 
E)  HCl 
A)  excess hydrogen ions 
B)  contents of the stomach 
C)  magnesium hydroxide 
D)  pH less than 7 
E)  HCl

Question 10

Selecting the Exception Four of the five answers listed below are long chains of sugars. Select the exception.

Accepted Answer

A)  polysaccharides 
B)  oligosaccharides 
C)  complex carbohydrates 
D)  corn starch 
E)  potato starch 
A)  polysaccharides 
B)  oligosaccharides 
C)  complex carbohydrates 
D)  corn starch 
E)  potato starch

Question 11

Selecting the Exception Four of the five answers listed below are characteristics of water. Select the exception.

Accepted Answer

A)  stabilize temperature 
B)  common solvent 
C)  cohesion and surface tension 
D)  produce salts 
E)  change shape of hydrophilic and hydrophobic substances 
A)  stabilize temperature 
B)  common solvent 
C)  cohesion and surface tension 
D)  produce salts 
E)  change shape of hydrophilic and hydrophobic substances

Question 12

Positron Emission Tomography utilizes ____ to yield results of a scan.

Accepted Answer

A)  tracers 
B)  x-rays 
C)  neutrinos 
D)  photons 
E)  mesons 
A)  tracers 
B)  x-rays 
C)  neutrinos 
D)  photons 
E)  mesons

Question 13

Water is an example of a(n)

Accepted Answer

A)  atom. 
B)  ion. 
C)  compound. 
D)  mixture. 
E)  element. 
A)  atom. 
B)  ion. 
C)  compound. 
D)  mixture. 
E)  element.

Question 14

The process by which a molecule splits into two smaller ones is

Accepted Answer

A)  condensation. 
B)  cleavage. 
C)  functional group transfer. 
D)  electron transfer. 
E)  rearrangement. 
A)  condensation. 
B)  cleavage. 
C)  functional group transfer. 
D)  electron transfer. 
E)  rearrangement.

Question 15

Selecting the Exception Four of the five answers listed below are related by a common chemical similarity. Select the exception.

Accepted Answer

A)  cellulose 
B)  hydrochloric acid 
C)  amino acid 
D)  protein 
E)  nucleic acid 
A)  cellulose 
B)  hydrochloric acid 
C)  amino acid 
D)  protein 
E)  nucleic acid

Question 16

A molecule is

Accepted Answer

A)  a combination of two or more atoms. 
B)  less stable than its constituent atoms separated. 
C)  electrically charged. 
D)  a carrier of one or more extra neutrons. 
E)  one atom. 
A)  a combination of two or more atoms. 
B)  less stable than its constituent atoms separated. 
C)  electrically charged. 
D)  a carrier of one or more extra neutrons. 
E)  one atom.

Question 17

A pH of 10 is how many times as basic as a pH of 7?

Accepted Answer

A)  2 
B)  3 
C)  10 
D)  100 
E)  1000 
A)  2 
B)  3 
C)  10 
D)  100 
E)  1000

Question 18

PET (positron-emission tomography) scans use radioisotopes attached to what substances to detect abnormalities?

Accepted Answer

A)  other radioisotopes 
B)  subatomic particles 
C)  carbon atoms 
D)  glucose or other biological molecules 
E)  plutonium 
A)  other radioisotopes 
B)  subatomic particles 
C)  carbon atoms 
D)  glucose or other biological molecules 
E)  plutonium

Exam 2: Chemistry of Life

Amino acids are the building blocks for

Smoke from fossil fuels, motor vehicle exhaust, and nitrogen fertilizers can lead to

A buildup of H2CO3 in the blood will lead to

Which of the following includes all of the others?

How many amino acids are known to exist?

The nucleotide most closely associated with energy is

The maximum number of electrons in a shell is

What is formed when an atom loses or gains an electron?

Which of the following would NOT be used in connection with the word acid ?

Selecting the Exception Four of the five answers listed below are long chains of sugars. Select the exception.

Selecting the Exception Four of the five answers listed below are characteristics of water. Select the exception.

Positron Emission Tomography utilizes ____ to yield results of a scan.

Water is an example of a(n)

The process by which a molecule splits into two smaller ones is

Selecting the Exception Four of the five answers listed below are related by a common chemical similarity. Select the exception.

A molecule is

A pH of 10 is how many times as basic as a pH of 7?

PET (positron-emission tomography) scans use radioisotopes attached to what substances to detect abnormalities?

Learning About Human Biology

Cells and How They Work

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

DNA, Genes, and Biotechnology

Genes and Disease: Cancer

Principles of Evolution

Principles of Ecology

Human Impacts on the Biosphere

Filters

A buildup of H₂CO₃ in the blood will lead to