Question 1

Plants store their excess carbohydrates in the form of ____.

Accepted Answer

A)  cellulose 
B)  starch 
C)  glycogen 
D)  sucrose 
E)  galactose 
A)  cellulose 
B)  starch 
C)  glycogen 
D)  sucrose 
E)  galactose

Question 2

Nearly all of life's chemistry occurs near a pH range of ____.

Accepted Answer

A)  1-2 
B)  3-4 
C)  5-6 
D)  7-8 
E)  9-10 
A)  1-2 
B)  3-4 
C)  5-6 
D)  7-8 
E)  9-10

Question 3

The main source of trans fats in the American diet has been ____.

Accepted Answer

A)  red meat 
B)  dairy products 
C)  seafood 
D)  grains 
E)  vegetable oils 
A)  red meat 
B)  dairy products 
C)  seafood 
D)  grains 
E)  vegetable oils

Question 4

All steroids have ____.

Accepted Answer

A)  the same number of double bonds 
B)  double bonds in the same positions 
C)  four carbon rings 
D)  the same functional groups 
E)  the same number and positions of double bonds 
A)  the same number of double bonds 
B)  double bonds in the same positions 
C)  four carbon rings 
D)  the same functional groups 
E)  the same number and positions of double bonds

Question 5

Match between columns
                        Premises: total number of protons and neutrons in the nucleus of an atom
substance that can maintain the pH of a solution at a relatively constant level
forms of an element that differ in the number of neutrons their atoms carry
isotope with an unstable nucleus
number of protons in the atomic nucleus
solution that contains the same concentration of HS1U1P1+S1S1P0 ions as OH S1U1P1-S1S1P0 ions
substance that accepts hydrogen ions in solution
atoms with more or less electrons than protons
measure of the relative concentration of hydrogen ions in a solution
substance that releases hydrogen ions in solution

Accepted Answer

The Answer of pH and neutral and mass number and is...

Question 6

The structural formula for molecular oxygen is depicted as O=O. What kind of bond holds molecular oxygen together?

Accepted Answer

A)  ionic 
B)  polar covalent 
C)  single covalent 
D)  double covalent 
E)  triple covalent 
A)  ionic 
B)  polar covalent 
C)  single covalent 
D)  double covalent 
E)  triple covalent

Question 7

The positive subatomic particle is the ____.

Accepted Answer

A)  neutron 
B)  proton 
C)  electron 
D)  positron 
E)  quark 
A)  neutron 
B)  proton 
C)  electron 
D)  positron 
E)  quark

Question 8

When a protein denatures, which type of bonding is affected?

Accepted Answer

A)  covalent 
B)  peptide 
C)  ionic 
D)  hydrogen 
E)  metallic 
A)  covalent 
B)  peptide 
C)  ionic 
D)  hydrogen 
E)  metallic

Question 9

A typical fat molecule has ____ fatty acid tails.

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
E)  five 
A)  one 
B)  two 
C)  three 
D)  four 
E)  five

Question 10

Glycogen is a polysaccharide used for energy storage by ____.

Accepted Answer

A)  plants 
B)  animals 
C)  protists 
D)  bacteria 
E)  archaea 
A)  plants 
B)  animals 
C)  protists 
D)  bacteria 
E)  archaea

Question 11

Hydrogenation is a _____.

Accepted Answer

A)  manufacturing process that adds hydrogen atoms to carbohydrates 
B)  natural process that adds hydrogen atoms to carbohydrates 
C)  manufacturing process that adds hydrogen atoms to oils 
D)  natural process that removes hydrogen atoms from fats 
E)  manufacturing process that removes hydrogen atoms from fats 
A)  manufacturing process that adds hydrogen atoms to carbohydrates 
B)  natural process that adds hydrogen atoms to carbohydrates 
C)  manufacturing process that adds hydrogen atoms to oils 
D)  natural process that removes hydrogen atoms from fats 
E)  manufacturing process that removes hydrogen atoms from fats

Question 12

Carbon 14 radioisotopes decay into stable ____. nitrogen 15 isotopes

Accepted Answer

A)  carbon 13 isotopes 
B)  nitrogen atoms 
C)  carbon atoms 
D)  nitrogen 15 isotopes 
E)  sodium atoms 
A)  carbon 13 isotopes 
B)  nitrogen atoms 
C)  carbon atoms 
D)  nitrogen 15 isotopes 
E)  sodium atoms

Question 13

Humans do not contain the enzymes to break down ____.

Accepted Answer

A)  cellulose 
B)  fructose 
C)  glycogen 
D)  starch 
E)  sucrose 
A)  cellulose 
B)  fructose 
C)  glycogen 
D)  starch 
E)  sucrose

Question 14

Which organic molecule is a carbohydrate monomer?

Accepted Answer

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

Question 15

The breakdown of large molecules by enzymes and the addition of water is known as a ____ reaction.

Accepted Answer

A)  oxidation 
B)  reduction 
C)  condensation 
D)  hydrolysis 
E)  decarboxylation 
A)  oxidation 
B)  reduction 
C)  condensation 
D)  hydrolysis 
E)  decarboxylation

Question 16

Which two atoms are found in all organic compounds?

Accepted Answer

A)  carbon and hydrogen 
B)  carbon and oxygen 
C)  oxygen and hydrogen 
D)  carbon and phosphorous 
E)  oxygen and sulfur 
A)  carbon and hydrogen 
B)  carbon and oxygen 
C)  oxygen and hydrogen 
D)  carbon and phosphorous 
E)  oxygen and sulfur

Question 17

Which bond is weakest?

Accepted Answer

A)  ionic 
B)  double covalent 
C)  polar covalent 
D)  nonpolar covalent 
E)  hydrogen 
A)  ionic 
B)  double covalent 
C)  polar covalent 
D)  nonpolar covalent 
E)  hydrogen

Question 18

A solution at a pH of 10 contains how many times more hydrogen ions than a solution at a pH of 7?

Accepted Answer

A)  2 
B)  3 
C)  10 
D)  100 
E)  1,000 
A)  2 
B)  3 
C)  10 
D)  100 
E)  1,000

Question 19

Cellulose is ____.

Accepted Answer

A)  the most complex of the organic compounds 
B)  a polymer of glucose and fructose 
C)  a polymer of glucose and galactose 
D)  a component of plasma membranes 
E)  a material found in plant cell walls 
A)  the most complex of the organic compounds 
B)  a polymer of glucose and fructose 
C)  a polymer of glucose and galactose 
D)  a component of plasma membranes 
E)  a material found in plant cell walls

Exam 2: Molecules of Life

Plants store their excess carbohydrates in the form of ____.

Nearly all of life's chemistry occurs near a pH range of ____.

The main source of trans fats in the American diet has been ____.

All steroids have ____.

The structural formula for molecular oxygen is depicted as O=O. What kind of bond holds molecular oxygen together?

The positive subatomic particle is the ____.

When a protein denatures, which type of bonding is affected?

A typical fat molecule has ____ fatty acid tails.

Glycogen is a polysaccharide used for energy storage by ____.

Hydrogenation is a _____.

Carbon 14 radioisotopes decay into stable ____. nitrogen 15 isotopes

Humans do not contain the enzymes to break down ____.

Which organic molecule is a carbohydrate monomer?

The breakdown of large molecules by enzymes and the addition of water is known as a ____ reaction.

Which two atoms are found in all organic compounds?

Which bond is weakest?

A solution at a pH of 10 contains how many times more hydrogen ions than a solution at a pH of 7?

Cellulose is ____.

Invitation to Biology

Cell Structure

Energy and Metabolism

Photosynthesis

Releasing Chemical Energy

Dna Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Prokaryotes, Protists, and Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Animal Reproduction and Development

Plant Form and Function

Life Cycles of Flowering Plants

Filters