Question 1

Proteins are chains of ______ that sometimes function as________

Accepted Answer

A)  disaccharides; cell wall 
B)  amino acids; enzymes 
C)  lipids; energy compounds 
D)  glycogen; enzymes 
A)  disaccharides; cell wall 
B)  amino acids; enzymes 
C)  lipids; energy compounds 
D)  glycogen; enzymes

Question 2

Which statement is true for radioisotopes?

Accepted Answer

A)  radioisotopes have unstable nuclei that emit subatomic particles and radiation 
B)  all radioisotopes have gained electrons 
C)  radioisotopes are useful to guard against radioactive elements 
D)  radioisotopes contain particles too large to form true solutions 
A)  radioisotopes have unstable nuclei that emit subatomic particles and radiation 
B)  all radioisotopes have gained electrons 
C)  radioisotopes are useful to guard against radioactive elements 
D)  radioisotopes contain particles too large to form true solutions

Question 3

The double helix is a structure associated with

Accepted Answer

A)  disaccarides 
B)  a compound with hydrogen bonds 
C)  lipids 
D)  DNA 
A)  disaccarides 
B)  a compound with hydrogen bonds 
C)  lipids 
D)  DNA

Question 4

Carbohydrates do not include which of the following

Accepted Answer

A)  glucose 
B)  starch 
C)  cellulose 
D)  sterols 
A)  glucose 
B)  starch 
C)  cellulose 
D)  sterols

Question 5

Organic molecules with the same molecular formula but different structures are

Accepted Answer

A)  elements 
B)  isotopes 
C)  isomers 
D)  anions 
A)  elements 
B)  isotopes 
C)  isomers 
D)  anions

Question 6

Chemical bonds form between atoms through the interaction of

Accepted Answer

A)  protons 
B)  neutrons 
C)  electrons 
D)  isotopes 
A)  protons 
B)  neutrons 
C)  electrons 
D)  isotopes

Question 7

Atoms are most likely to form ions when they

Accepted Answer

A)  have an even number of electrons in their outer shells 
B)  have a nearly empty outer shell 
C)  have an odd number of electrons in their outer shells 
D)  have four electrons in their outer shells 
A)  have an even number of electrons in their outer shells 
B)  have a nearly empty outer shell 
C)  have an odd number of electrons in their outer shells 
D)  have four electrons in their outer shells

Question 8

In DNA,the nucleotide cytosine always base pairs to

Accepted Answer

A)  adenine 
B)  guanine 
C)  thymine 
D)  uracil 
A)  adenine 
B)  guanine 
C)  thymine 
D)  uracil

Question 9

Chemical reactions occur:

Accepted Answer

A)  between elements that have magnetic repulsion. 
B)  rarely as very few elements have electrons in their outer shell. 
C)  during metabolism as they are necessary for making the substance of cells. 
D)  only in eukaryotes as they require a nucleus. 
A)  between elements that have magnetic repulsion. 
B)  rarely as very few elements have electrons in their outer shell. 
C)  during metabolism as they are necessary for making the substance of cells. 
D)  only in eukaryotes as they require a nucleus.

Question 10

The specific sequence of amino acids in a protein is known as the protein's

Accepted Answer

A)  primary structure 
B)  secondary structure 
C)  tertiary structure 
D)  quaternary structure 
A)  primary structure 
B)  secondary structure 
C)  tertiary structure 
D)  quaternary structure

Question 11

Identify which of the following is not a colloid

Accepted Answer

A)  salt water 
B)  gelatin desserts 
C)  agar plates used to grow microorganisms 
D)  fluid in cells 
A)  salt water 
B)  gelatin desserts 
C)  agar plates used to grow microorganisms 
D)  fluid in cells

Question 12

Chemical bonds found in living organisms do not normally include

Accepted Answer

A)  ionic bonds 
B)  hydrogen bonds 
C)  covalent bonds 
D)  magnetic bonds 
A)  ionic bonds 
B)  hydrogen bonds 
C)  covalent bonds 
D)  magnetic bonds

Question 13

Phospholipids

Accepted Answer

A)  have a charged phosphate group that can mix with water and an insoluble fatty acid 
B)  can serve as hormones 
C)  always remain liquid at room temperature 
D)  form straight chains in water 
A)  have a charged phosphate group that can mix with water and an insoluble fatty acid 
B)  can serve as hormones 
C)  always remain liquid at room temperature 
D)  form straight chains in water

Question 14

Anabolic reactions tend to

Accepted Answer

A)  use energy and degrade food 
B)  produce energy, and degrade food 
C)  produce energy and new chemical bonds 
D)  use energy and produce new chemical bonds 
A)  use energy and degrade food 
B)  produce energy, and degrade food 
C)  produce energy and new chemical bonds 
D)  use energy and produce new chemical bonds

Question 15

When pairs of electrons are shared between two atoms,the result is a _______ bond.

Accepted Answer

A)  ionic 
B)  covalent 
C)  hydrogen 
D)  carbonic 
A)  ionic 
B)  covalent 
C)  hydrogen 
D)  carbonic

Question 16

Atoms take part in bond formation to

Accepted Answer

A)  form polypeptides 
B)  attain a stable electron configuration 
C)  increase their charge density 
D)  increase their energy 
A)  form polypeptides 
B)  attain a stable electron configuration 
C)  increase their charge density 
D)  increase their energy

Question 17

Reactions in which food is degraded and energy is released are best termed

Accepted Answer

A)  anabolic 
B)  catabolic 
C)  metabolic 
D)  exerbolic 
A)  anabolic 
B)  catabolic 
C)  metabolic 
D)  exerbolic

Question 18

Glucose

Accepted Answer

A)  is abundant in milk and fruit 
B)  is a rare monosaccharide 
C)  can be oxidized to form deoxy sugar or alcohol 
D)  none of the above 
A)  is abundant in milk and fruit 
B)  is a rare monosaccharide 
C)  can be oxidized to form deoxy sugar or alcohol 
D)  none of the above

Question 19

Combinations that form from mixtures of different elements are called

Accepted Answer

A)  isotopes 
B)  atoms 
C)  ions 
D)  compounds 
A)  isotopes 
B)  atoms 
C)  ions 
D)  compounds

Question 20

Which statement about acids and bases is false?

Accepted Answer

A)  A hydrogen ion (H+) is a proton. 
B)  Acids are proton acceptors. 
C)  Bases are hydroxyl ion donors 
D)  A hydroxyl ion donor is also a proton acceptor 
A)  A hydrogen ion (H+) is a proton. 
B)  Acids are proton acceptors. 
C)  Bases are hydroxyl ion donors 
D)  A hydroxyl ion donor is also a proton acceptor

Exam 2: Fundamentals of Chemistry

Proteins are chains of ______ that sometimes function as________

Which statement is true for radioisotopes?

The double helix is a structure associated with

Carbohydrates do not include which of the following

Organic molecules with the same molecular formula but different structures are

Chemical bonds form between atoms through the interaction of

Atoms are most likely to form ions when they

In DNA,the nucleotide cytosine always base pairs to

Chemical reactions occur:

The specific sequence of amino acids in a protein is known as the protein's

Identify which of the following is not a colloid

Chemical bonds found in living organisms do not normally include

Phospholipids

Anabolic reactions tend to

When pairs of electrons are shared between two atoms,the result is a _______ bond.

Atoms take part in bond formation to

Reactions in which food is degraded and energy is released are best termed

Glucose

Combinations that form from mixtures of different elements are called

Which statement about acids and bases is false?

Scope and History of Microbiology

Microscopy and Staining

Characteristics of Prokaryotic and Eukaryotic Cells

Essential Concepts of Metabolism

Growth and Culturing of Bacteria

Microbial Genetics

Gene Transfer and Genetic Engineering

An Introduction to Taxonomy: the Bacteria

Viruses

Eukaryotic Microorganisms and Parasites

Sterilization and Disinfection

Antimicrobial Therapy

Host-Microbe Relationships and Disease Processes

Epidemiology and Nosocomial Infections

Innate Host Defenses

Immunology I: Basic Principles of Adaptive Immunity and Immunization

Immunolgy Ii: Immunological Disorders and Tests

Diseases of the Skin and Eyes; Wounds and Bites

Urogenital and Sexually Transmitted Diseases

Diseases of the Respiratory System

Oral and Gastrointestinal Diseases

Cardiovascular, lymphatic and Systemic Disease

Diseases of the Nervous System

Environmental Microbiology

Applied Microbiology

Filters

Proteins are chains of that sometimes function as__