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Earth Science > bio test 3 > Flashcards

bio test 3 Flashcards

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Biology 101 flashcards
1
Q

what is the slight charge of oxygen

A

negative

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2
Q

what is the slight charge of hydrogen

A

positive

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3
Q

are the oxygen and hydrogen bonds strong or weak

A

they are weak

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4
Q

what is hydrogen bonding

A

when a oxygen and and hydrogen charge bond together

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5
Q

what is it called when the same water molecules hang on to each other

A

cohesion

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6
Q

what is the one called where water is attracted to that glass

A

adhesion

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7
Q

is the droplet from a sink and things adhesion or cohesion

A

cohesion

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7
Q

the narrower the tube the more or less capillary action?

A

more

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8
Q

what are the three types of mixtures

A

solution, colloid, and suspension

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9
Q

what is it called when liquid flows through a narrow action

A

capillary action

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10
Q

what is a solution

A

a homogenous mixture when 2 or more substances are dissolved together

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10
Q

what is the salt called in solution, and what is water

A

solute, solvent

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11
Q

what is a colloid

A

A mixture in which very small particles of one substance are distributed evenly throughout another substance

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12
Q

can you actually see a colloid

A

yes

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13
Q

what is a suspension

A

a suspension is a heterogenous mixture, it separates over time. A great example is oil and vinegar or sand and water.

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14
Q

what does gravity do to suspension mixture

A

it separates them

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15
Q

what ions make up the acid

A

hydrogen ion

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16
Q

what ion makes up the base

A

hydroxide ion

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17
Q

what if the ph is at 1 or 2 or 0

A

it would be very acidic

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17
Q

whats another word for base

A

alkali

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18
Q

what if the ph was near 14

A

very basic

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19
Q

what ph is around 8 or 9

A

weak base

20
Q

what ph is around 7

A

neutral

21
Q

what is a neutralization reaction

A

when you take an acid and a strong base and it turns into neutral.

22
Q

what are buffers

A

a system in our bodys that helps us keep a good ph level

23
Q

why do we have buffers

A

to regulate the ph level

24
Q

what chemical has one carbon and four hydrogen atoms

A

methane

25
Q

which chemical has two carbons in a row

A

ethane

26
Q

what chemical would it be if there was a double bond

A

ethene

27
Q

triple bond

A

ethyne

28
Q

what is octane

A

8 carbons long

29
Q

what do a bunch of glucoses make

A

a starch

30
Q

in polymerization which is the monomer and which is the polymer

A

glucose is monomer whicle starch is polymer.

31
Q

what is the name for a large giant molecule

A

macromolecule

32
Q

what are the four organic groups

A

carbohydrates, lipids, proteins, and nucleic acids

33
Q

what are some examples of
carbohydrates
lipids
proteins
nucleic acids

A

starch, can sugar
fats, cholesterol,
tofu, enzymes
DNA,RNA

34
Q

what is is called when you combine one glucose and another. what are you taking out

A

dehydration synthesis. taking out water

35
Q

what is it called when two glucoses are combined

A

maltose

36
Q

why dont lipids dissolve in water

A

because they are nonpolar

37
Q

what are the two main parts of a triglyceride

A

glycerol and fatty acids

38
Q

what fat is it when there are double bonds and which one is single bonds

A

unsaturated fat, saturated fat

39
Q

what is it called when there are multiple double bonds

A

polyunsaturated fats

40
Q

are polyunsaturated fats better or worse

A

the polyunsaturated are better

41
Q

how many fatty acids are in the phospholipid

A

there are two because one is replace with a phosphate group

42
Q

after you remove the water from glucose what does it become

A

moltose(dissacharide)

43
Q

what is the name of the process in our body where water breaks down a compound

A

hydrolisis

44
Q

what are the four types of nitrogenousu bases

A

AGCT( purines: adanine,guanine, pyremadies:cytosine thymine)

45
Q

what is dna made of

A

phosphate, sugars(deoxyribose) and nitrogenous base

46
Q

what did erwin chargoff discover

A

in DNA, the ratios of adenine (A) to thymine (T) and guanine (G) to cytosine (C) are equal.

47
Q

what did rosalind franklin discover

A

that the double helix is the shape of a dna molecule

48
Q

what is dna made of

A

nucleic acids,nucleotides,

49
Q

what makes up cell membranes

A

phospholipids

50
Q

what are on the two sides of amino acids

A

amine, and carboxyl group

51
Q
A

Earth Science (38 decks)

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