Deck 2: Chemistry Comes Alive

Question 1

Figure 2.1
Using Figure 2.1, match the following:

A) C
B) B
C) E
D) D
E) A
Polysaccharide.

Answer 1

A

Question 2

Match the following particles to the correct description:

A) Atom
B) Nuetron
C) Cation
D) Molecule
Electrically charged particle due to loss of an electron.

Answer 2

C

Question 3

Figure 2.1
Using Figure 2.1, match the following:

A) C
B) B
C) E
D) D
E) A
Monosaccharide.

Answer 3

E

Question 4

Figure 2.1
Using Figure 2.1, match the following:

A) C
B) B
C) E
D) D
E) A
Nucleotide.

Question 5

Figure 2.1
Using Figure 2.1, match the following:

A) C
B) B
C) E
D) D
E) A
Polymer.

Question 6

Match the following chemical bonds to the correct description:

A) Nonpolar covalent bond
B) Polar covalent bond
C) Ionic bond
D) Hydrogen bond
A bond in which electrons are shared unequally.

Question 7

Match the following chemical bonds to the correct description:

A) Nonpolar covalent bond
B) Polar covalent bond
C) Ionic bond
D) Hydrogen bond
A bond in which electrons are completely lost or gained by the atoms involved.

Question 8

Figure 2.2
Using Figure 2.2, match the following:

A) A
B) D
C) B
D) E
E) C
Hydrogen bonds.

Question 9

Figure 2.2
Using Figure 2.2, match the following:

A) A
B) D
C) B
D) E
E) C
Deoxyribose sugar.

Question 10

Match the following chemical bonds to the correct description:

A) Nonpolar covalent bond
B) Polar covalent bond
C) Ionic bond
D) Hydrogen bond
A bond in which electrons are shared equally.

Question 11

Figure 2.1
Using Figure 2.1, match the following:

A) C
B) B
C) E
D) D
E) A
Lipid.

Question 12

Figure 2.2
Using Figure 2.2, match the following:

A) A
B) D
C) B
D) E
E) C
Guanine.

Question 13

Figure 2.1
Using Figure 2.1, match the following:

A) C
B) B
C) E
D) D
E) A
Tertiary (protein)structure.

Question 14

Match the following particles to the correct description:

A) Atom
B) Nuetron
C) Cation
D) Molecule
Neutral subatomic particle.

Question 15

Figure 2.1
Using Figure 2.1, match the following:

A) C
B) B
C) E
D) D
E) A
Functional protein.

Question 16

Match the following chemical bonds to the correct description:

A) Nonpolar covalent bond
B) Polar covalent bond
C) Ionic bond
D) Hydrogen bond
A type of bond important in tying different parts of the same molecule together into a three-dimensional structure.

Question 17

Match the following particles to the correct description:

A) Atom
B) Nuetron
C) Cation
D) Molecule
Smallest particle of an element that retains its properties.

Question 18

Match the following particles to the correct description:

A) Atom
B) Nuetron
C) Cation
D) Molecule
Combination of two or more atoms of the same element held together by chemical bonds.

Question 19

Figure 2.2
Using Figure 2.2, match the following:

A) A
B) D
C) B
D) E
E) C
Phosphate.

Question 20

Figure 2.2
Using Figure 2.2, match the following:

A) A
B) D
C) B
D) E
E) C
Thymine.

Question 21

Match the following:

A) Atomic symbol
B) Mass number of an element
C) Atomic number
Number of protons in an atom.

Question 22

Match the following:

A) Weight
B) Mass
C) Matter
D) Energy
Although a man who weighs 175 pounds on Earth would be lighter on the moon and heavier on Jupiter,his ________ would not be different.

Question 23

The atomic weight is an average of the relative weights (mass numbers)of all the isotopes of an element.

Question 24

Match the following:

A) Mechanical energy
B) Chemical energy
C) Electrical energy
D) Radiant energy
Energy that travels in waves.Part of the electromagnetic spectrum.

Question 25

Match the following:

A) Solutions
B) Suspensions
C) Colloids
Homogeneous,will not settle.

Question 26

Match the following:

A) Mechanical energy
B) Chemical energy
C) Electrical energy
D) Radiant energy
When the bonds of ATP are broken,energy is released to do cellular work.

Question 27

Match the following:

A) Weight
B) Mass
C) Matter
D) Energy
Can be measured only by its effects on matter.

Question 28

Match the following:

A) Atomic symbol
B) Mass number of an element
C) Atomic number
Combined number of protons and neutrons in an atom.

Question 29

Match the following:

A) Mechanical energy
B) Chemical energy
C) Electrical energy
D) Radiant energy
Represented by the flow of charged particles along a conductor,or the flow of ions across a membrane.

Question 30

Match the following:

A) Solutions
B) Suspensions
C) Colloids
Will not scatter light.

Question 31

Match the following:

A) Weight
B) Mass
C) Matter
D) Energy
Is a function of,and varies with,gravity.

Question 32

Match the following:

A) Mechanical energy
B) Chemical energy
C) Electrical energy
D) Radiant energy
Legs moving the pedals of a bicycle.

Question 33

Match the following:

A) Compound
B) Mixture
C) Element
Carbon.

Question 34

Match the following:

A) Solutions
B) Suspensions
C) Colloids
Heterogeneous,will settle.

Question 35

Match the following:

A) Compound
B) Mixture
C) Element
Water.

Question 36

Match the following:

A) Weight
B) Mass
C) Matter
D) Energy
Anything that occupies space and has mass.

Question 37

Match the following:

A) Compound
B) Mixture
C) Element
Blood.

Question 38

Match the following:

A) Atomic symbol
B) Mass number of an element
C) Atomic number
Usually,the first one or two letters of an element's name.

Question 39

Match the following:

A) Solutions
B) Suspensions
C) Colloids
Heterogeneous,will not settle.

Question 40

Match the following:

A) Compound
B) Mixture
C) Element
Dry ice (frozen carbon dioxide).

Question 41

Glucose is an example of a monosaccharide.

Question 42

The acidity of a solution reflects the concentration of free hydrogen ions in the solution.

Question 43

Isotopes differ from each other only in the number of electrons the atom contains.

Question 44

Triglycerides are a poor source of stored energy.

Question 45

Chemical properties are determined primarily by neutrons.

Question 46

The lower the pH,the higher the hydrogen ion concentration.

Question 47

Buffers resist abrupt and large changes in the pH of body fluids by releasing or binding ions.

Question 48

About 60% to 80% of the volume of most living cells consists of organic compounds.

Question 49

Glycogen,the storage form of glucose,is primarily stored in skeletal muscle and liver cells.

Question 50

All organic compounds contain carbon.

Question 51

The fact that no chemical bonding occurs between the components of a mixture is the chief difference between mixtures and compounds.

Question 52

Mixtures are combinations of elements or compounds that are physically blended together but are not bound by chemical bonds.

Question 53

A charged particle is generally called an ion or electrolyte.

Question 54

A chemical bond is an energy relationship between outer electrons and neighboring atoms.

Question 55

It is the difference in the R group that makes each amino acid chemically unique.

Question 56

A dipeptide can be broken into two amino acids by dehydration synthesis.

Question 57

Covalent bonds are generally less stable than ionic bonds.

Question 58

Omega-3 fatty acids appear to decrease the risk of heart disease.

Question 59

Hydrogen bonds are too weak to bind atoms together to form molecules,but they do hold different parts of a single large molecule in a specific three-dimensional shape.

Question 60

The pH of body fluids must remain fairly constant for the body to maintain homeostasis.

Question 61

The single most abundant protein in the body is ________.

A) hemoglobin
B) collagen
C) DNA
D) glucose

Question 62

The genetic information is coded in DNA by the ________.

A) sequence of the nucleotides
B) three-dimensional structure of the double helix
C) arrangement of the histones
D) regular alteration of sugar and phosphate molecules

Question 63

Salts are always ________.

A) double covalent compounds
B) single covalent compounds
C) ionic compounds
D) hydrogen bonded

Question 64

Which of the following does NOT characterize proteins?

A) Their function depends on their three-dimensional shape.
B) They may be denatured or coagulated by heat or acidity.
C) They appear to be the molecular carriers of coded hereditary information.
D) They have both functional and structural roles in the body.

Question 65

Choose the answer that best describes HCO3-.

A) a proton donor
B) a weak acid
C) a bicarbonate ion
D) common in the liver

Question 66

Which statement about enzymes is FALSE?

A) Most enzymes can catalyze millions of reactions per minute.
B) Enzymes may be damaged by high temperature.
C) Enzymes may use coenzymes derived from vitamins or cofactors from metallic elements.
D) Enzymes require contact with substrate in order to assume their active form.

Question 67

Which of the following statements is FALSE?

A) Chemical reactions progress at a faster rate when the reacting particles are present in higher numbers.
B) Catalysts increase the rate of chemical reactions, sometimes while undergoing reversible changes in shape.
C) Larger particles move faster than smaller ones and thus collide more frequently and more forcefully.
D) Chemical reactions proceed more quickly at higher temperatures.

Question 68

In general,the lipids that we refer to as oils have ________.

A) long fatty acid chains
B) a high water content
C) unsaturated fatty acids
D) saturated fatty acids

Question 69

Carbohydrates are stored in the liver and skeletal muscles in the form of ________.

A) triglycerides
B) glycogen
C) glucose
D) cholesterol

Question 70

What structural level is represented by the coiling of the protein chain backbone into an alpha helix?

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

Question 71

Which of the following is a general function for a fibrous protein?

A) protein management
B) transport
C) structural framework
D) body defense
E) catalysis

Question 72

What happens in redox reactions?

A) the electron acceptor is oxidized
B) the organic substance that loses hydrogen is usually reduced
C) both decomposition and electron exchange occur
D) the reaction is uniformly reversible

Question 73

Carbohydrates and proteins are built up from their basic building blocks by the ________.

A) addition of a carbon atom between each two units
B) removal of a water molecule between each two units
C) addition of a water molecule between each two units
D) removal of a carbon atom between each two units

Question 74

The basic structural material of the body consists of ________.

A) proteins
B) lipids
C) nucleic acids
D) carbohydrates

Question 75

Which of the following statements is FALSE?

A) The pH of blood is slightly basic.
B) The more hydrogen ions in a solution, the more acidic the solution.
C) When acids and bases are mixed, they react with each other to form water and a salt.
D) When the hydrogen ion concentration decreases, the hydroxyl ion concentration also decreases.

Question 76

Which of the following does NOT describe enzymes?

A) Enzymes work by raising the energy of activation.
B) Some enzymes are purely protein.
C) Some enzymes are protein plus a cofactor.
D) Each enzyme is chemically specific.

Question 77

Which of the following would be regarded as an organic molecule?

A) NaCl
B) H2O
C) CH4
D) NaOH

Question 78

What is a chain of more than 50 amino acids called?

A) protein
B) triglyceride
C) nucleic acid
D) polysaccharide

Question 79

Which of the following is the major positive ion outside cells?

A) hydrogen
B) magnesium
C) sodium
D) potassium

Question 80

The numbers listed represent the number of electrons in the first,second,and third energy levels,respectively.On this basis,which of the following is an unstable or reactive atom?

A) 2
B) 2, 8
C) 2, 8, 1
D) 2, 8, 8