Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Su24 > Bio Ch 2 > Flashcards

Bio Ch 2 Flashcards

1
Q

Is air matter,

A

TRUE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what charge does proton, neutron, and electrons have

A

Proton: Positive Neutron: Neutral Electron: Negitive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

if an atom has an atomic number of 6, how many protons would it have?,

A

6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What atom has 8 protons,

A

Oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which of the following are cations: Na+, Ca2+, Cl-, HCO3-, An atom has lost electrons, an atom that has gained electrons, carbon,

A

Na+, Ca2+, An atom that has lost electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

If an atom has 8 electrons, how many would be found on each shelll?,

A

2 electrons in the first shell and 6 electrons in the outermost shell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

If an atom has 10 electrons, it would have ___ electrons in the valance shell,

A

8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Identify the cation in the following HCL,

A

H+

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Identify the anion in K3PO4,

A

PO4(3-)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Is C6H12O6 polar or nonpolar,

A

polar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Is C24H48 polar or nonpolar,

A

nonpolar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Are fat, lipids, and waxes polar or nonpolar,

A

nonpolar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Are compounds with alot of o & n polar or nonpolar,

A

polar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Are polar or nonpolar compounds dissolvable in water,

A

polar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Are amino acids and proteins polar or nonpolar,

A

polar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Is sugar polar or non-polar,

A

polar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

is water polar or nonpolar,

A

polar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Are solutions dissolvable in oil polar or nonpolar,

A

nonpolar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Are compounds with alot of C & H polar or nonpolar,

A

Nonpolar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What of the following are Polar; O=O, H2O, C-C, Fat, Sugar, O2

A

O=O, C-C, Fat, O2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Are hydrogen bonds weak/short-term or strong /long-term,

A

weak, short-term

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is cohesion,

A

The ability for water to stick (hydrogen bond) to other water molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is adhesion,

A

The ability for water to stick (hydrogen bond) to other molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is surface tension,

A

hydrogen bonding makes it difficult to break through the surface of water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

It requires a high _____ to change the temperature of water,

A

Specific heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

It takes a long time to boil water (change it from liquid to gas) because it has a high _____.,

A

heat of vaporization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What is the product in the equation: ADP + P –> ATP,

A

ATP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

what is the reactant in the equation: C6H12O6 + O2 -> H2O + CO2 + ATP,

A

C6H12O6 + O2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

A liquid with a pH of 2 has _____ times _____ H+ than a liquid with a pH of 3,

A

10x more

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Which solution has more Hydrogen Ions; one with a pH of 2 or a pH of 12,

A

2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Human tears have a pH of 6; is it acidic or basic,

A

acidic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

As pH increases, does H+ concentration increase or decrease,

A

decrease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

what is a pH of 10 compared to pH of 7,

A

1000x more basic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Would we expect a lipid like cholesterol to dissolve easily in blood since it is mostly made of water,

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Does NaCl dissolve in water,

A

yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Does adding a base such as sodium hydroxide lower the pH of milk?,

A

no

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

How is an isotope formed?,

A

gaining or loosing neutrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Do nonpolar bonds form when 2 atoms have different electronegativites?,

A

no; nonpolar have the same electronegativites

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Where are protons found in an atom,

A

nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

where are neutrons found in an atom,

A

nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

Where are electrons found in an atom,

A

electron cloud

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

What 4 atoms make up the majority of molecules found in an organism,

A

C, H, O, N

43
Q

Is magnesium a trace element?,

A

no

44
Q

What is responsible for an atom’s characteristics and abiltiy to form bonds,

A

the position of the electrons

45
Q

The lower the pH, the ____ H+,

A

more (inverse relation)

46
Q

what is the pH of blood and is it acidic, neutral, or basic,

A

7.00, neutral

47
Q

what would happen if the pH of blood went outside of the 7.35-7.45 range,

A

it would denature

48
Q

the enzyme, amylase, works best at a pH of 6.5 but denatures in acidic environments. would we expect it to denature at a pH of 3?,

A

yes

49
Q

Carbon 14 has 2 extra neutrons, is it considered radioactive?,

A

yes

50
Q

Do polar molecules have an equal distribution of charge,

A

no

51
Q

t/f: An overproduction of acid in the stomach can lead to a “tummy ache.” It makes sense that a medication containing bicarbonate would be given to someone with this condition.,

A

TRUE

52
Q

What is the atomic mass of oxygen which has 8 protons and 8 neutrons,

A

16

53
Q

All elements are trace elements excpet _, _, _, _,

A

C H O N

54
Q

What difference is there between organic and inorganic compounds?,

A

All organic compounds have carbon

55
Q

How can you tell something radioactive?

A

it has extra neutrons

56
Q

How is oxygen imporant to the body,

A

Vital for cellular respiration

57
Q

How is carbon important to the body,

A

Building block of organic molecule, including carbohydrates, lipids, proteins, & nucleic acids

58
Q

Are carbohydrates, lipids, proteins, and nucleic acids organic or inorganic?,

A

orgainic

59
Q

How is Hydrogen important to the body,

A

Key component of water which is a significant portion of the body

60
Q

how is nitrogen important to the body,

A

Crucial component of amino acids, the building blocks of proteins

61
Q

If an atom has an atomic mass of 12 and atomic number of 6 how many protons, neutrons, and electrons does it have? and what is its net charge,

A

6 p, 6 n, 6 e, no charge

62
Q

What are valence electrons,

A

Electrons located in the outermost energy shell of an atom, which determine the atoms reactivity

63
Q

Is carbon (6) reactive,

A

yes

64
Q

Is helium (2) reactive,

A

no

65
Q

Is Sodium (11) reactive,

A

yes

66
Q

Is Chloride (17) Reactive,

A

yes

67
Q

Is Boron (5) reactive,

A

yes

68
Q

What changes in isotopes?

A

number of neutrons

69
Q

Is O=O polar or nonpolar,

A

nonpolar

70
Q

Is C(6)-H(1) polar or nonpolar,

A

Nonpolar

71
Q

Are fats polar or nonpolar,

A

Nonpolar

72
Q

Are sugars polar or nonpolar,

A

polar

73
Q

Is C-C polar or nonpolar,

A

nonpolar

74
Q

Is C(6)O2(8) polar or nonpolar,

A

Nonpolar

75
Q

Is H2(1)O(8) polar or nonpolar,

A

polar

76
Q

Is C(6)H4(1) polar or nonpolar,

A

Nonpolar

77
Q

Is N(7)H2(1) polar or nonpolar,

A

Polar

78
Q

Does a cation lose or gain electrons? charge? which is the cation in NaCl,

A

Lose, +, Na

79
Q

Does an anion lose or gain electrons? charge? which is the anion in NaCl,

A

Gain, -, Cl

80
Q

Acid has ______ H+ and ____ OH- causing a ______ pH scale,

A

More; less; lower

81
Q

Bases have ______ H+ and ____ OH- causing a ______ pH scale,

A

Less, more; higher

82
Q

How would adding a buffer bring a soultions pH up?,

A

The OH- in th ebase would remove the H+ from the solution, increasing the pH

83
Q

Define a chemical element,

A

A substance that can be broken down into simpler substances via chemical processes

84
Q

what 4 elements make up 96% of the human body?,

A

Carbon, Hydrogen, Oxygen, Nitrogen

85
Q

What is the difference btw an element and a compound,

A

A compound is a mixture of elements, elements are made of atoms

86
Q

what makes up atoms,

A

Protons, Neutrons, Electrons

87
Q

Explain the processes that result in chemical reaction,

A

chemical bonds break & the atoms separate & rearrange themselves into new substances w/ new chimcal bonds

88
Q

What is atomic mass,

A

Protons + neutrons

89
Q

What are the 3 types of chemical bonds, how do they form, and how strong are they,

A

covalent: strongest, sharing of electrons Ionic: give/take electrons Hydrogen: weakest, bond of hydrogen atoms

90
Q

How is the attraction of electrons related to the polar covalent bonds in water,

A

Hydrogen is positive and the oxygen is negitive which is why water molecules can bond with other water molecules

91
Q

What is an aqueous soultion? what is a solvent and solute?,

A

Aqueous: water solution Solvent: dissolving agent Solute: Substance dissolving

92
Q

What is a pH buffer and how does it work,

A

A soultion of weak acid & base that resists a change in pH following addition of small amounts of a strong base. A buffer can Accept H+ if its pH gets low (weak base role) or donate H+ if the pH gets high (weak acid role)

93
Q

Further the shell from the center, ____ the pull

A

greater

94
Q

In each shell, electrons are orgainized into _______. There are __ in the first shell and __ in every shell after

A

orbitals; 2; 4

95
Q

What is electronegativity

A

an atoms attraction for shared electrons

96
Q

Does H have a strong or weak electronegativity

A

weak

97
Q

Does N(7) have a strong or weak electronegaitvity

A

strong

98
Q

Bonds with __ & __ are usually nonpolar

A

C & H

99
Q

Bonds with __ & __ are usually polar

A

O & N

100
Q

define endothermic

A

heat is absorbed to break H bonds

101
Q

Define Exothermic

A

Heat is released to form H bonds

102
Q

Acid ____ H+ Ions

A

donates

103
Q

Base ____ H+ ions

A

accepts

Su24 (20 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions