week 2 Flashcards

1
Q

covalent bond

A

atoms share unpaired electrons

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2
Q

polar-covalent bond

A

atoms shared unequally in electronegativity in a covalent bond

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3
Q

molecule

A

atoms joined in covalent bonds

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4
Q

ionic molecules

A

unbalanced molecules

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5
Q

hydronium

A

takes proton

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6
Q

hydroxide

A

loses proton

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7
Q

acid

A

proton-donor molecules

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8
Q

base

A

proton-accepter

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9
Q

Cohesion

A

Like molecules attract eachother

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10
Q

specific heat

A

H bonds make H2O harder to heat

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11
Q

heat of vaporization

A

elevated boiling point

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12
Q

adhesion

A

Different molecules attract eachother

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13
Q

hydrophilic

A

polar; loves water

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14
Q

hydrophobic

A

non-polar; cant react w water

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15
Q

lake stratification

A

water stratifies into layers in winter & summer

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16
Q

lake turnover

A

disrupts stratification

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17
Q

anabolism

A

high free energy, constructs molecules

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18
Q

catabolism

A

breaks down molecules, low free energy

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19
Q

First trophic level

A

Primary producer

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20
Q

Second trophic level

A

Primary consumer

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21
Q

Third trophic level

A

Secondary consumer

22
Q

Fourth trophic level

A

Tertiary consumer

23
Q

What ingredients are used by plants to build macromolecules

A

Carbon/oxygen from carbon dioxide, oxygen/hydrogen from water

24
Q

Energy source for a producer

A

Sunlight

25
Q

Energy source for a consumer

A

Free energy in macromolecules

26
Q

Ruminants are in which trophic level?

A

Primary consumer

27
Q

Stomach size of a concentrate selector

A

Small

28
Q

Stomach size of a grass/roughage eater

A

Large

29
Q

Stomach size of a mixed grazer/browser

A

Medium

30
Q

Which trophic level always has greatest biomass and free energy

A

First, primary producer

31
Q

What factors contribute to inefficient energy transfer between trophic levels

A

Energy used at lower levels cant be transferred (too much plant)
Incomplete macromolecule breakdown (waste w unharvested energy)

32
Q

Competition

A

Within the same trophic level

33
Q

Predation

A

Between different levels

34
Q

Resource partitioning

A

Different species focus on different resources

35
Q

How does resource paritioning affect competition

A

It decreases competition among a level

36
Q

Primary production is limiting

A

Bottom up

37
Q

Predation is limiting

A

Top down

38
Q

Chemical bond that made water

A

Polar covalent

39
Q

Why is an antacid able to neutralize an acidic solution

A

Its composed of basic molecules that capture protons

40
Q

Hydrogen bond

A

Opposite partial charges attract

41
Q

What causes water to have high specific heat

A

Cohesion

42
Q

What causes water to be a universal solvent

A

Adhesion

43
Q

Temp of bottom of lake

A

4° C

44
Q

In a carb polymer, where is additonal free energy held

A

Within covalent bonds that link monomers

45
Q

Exergonic reaction

A

Release excess energy

46
Q

Endergonic reaction

A

Input of outside energy

47
Q

Hindgut fermenter

A

Non-ruminant
Elongated intestine for prolonged fermentation

48
Q

What happens to the free energy as you go up in the trophic levels?

A

It decreases

49
Q

Detritivore

A

An animal that eats dead organic material

50
Q

What happens when an ecosystem has less primary productivity?

A

It supports fewer trophic levels