Brainscape's Knowledge GenomeTM

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


See full index

Biology > food > Flashcards

food Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

two main reasons why organisms require food

A

a source of energy, and to make chemicals needed for metabolic reactions

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

polysaccharide

A

a carbohydrate composed of many sugar units

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

main structural polysaccharide in plants

A

cellulose

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

describe the composition of a triglyceride molecule

A

glycerol and three fatty acids

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

give a structural role of lipids

A

important food and energy stores in animals, phospholipids help form the cell membrane

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

test for protein

A

biuret test - copper sulfate and sodium hydroxide

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

one water soluble vitamin and a food source

A

vitamin C -oranges

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

metabolic role of fat

A

broken down in respiration to release energy

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

name a mineral present in dissolved salts and state its function in humans

A

Na (sodium) - regulation of water content of cells

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

name one food that would be tested positive with the biuret test and how you would know the result is positive

A

milk- solution turns from blue to purple

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

protein with a fibrous structure and where found

A

keratin- hair and nails

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

role of two named minerals in plants and where found

A

magnesium - helps form chlorophyll
calcium- helps cell walls attach to each other

found in salts in the soil

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

role of two minerals found in animals

A

iron - helps form haemoglobin

calcium- helps form bones and teeth

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

two reasons water is required by living organisms

A

it is the liquid in which all metabolic reactions take place

it provides the basis for transport systems in organisms

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

what type of food molecule is identified by benedicts solution

A

reducing sugar

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

what is a phospholipid

A

fat like substances in which one of the fatty acids has been replaced by a phosphate group or has had a phosphate group added to it

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

what elements does protein contain

A

carbon, hydrogen, oxygen and nitrogen

small amounts: sulfur and phosphorous

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

identify a none metallic element found in proteins

A

sulfur

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

structural role of proteins in the human body

A

fibrous proteins keratin found in nails and hair

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

metabolic role of proteins

A

proteins are used as enzymes to control

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

disaccharide

A

carbohydrate composed of two sugar units joined together

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

elements present in carbohydrates

A

carbon hydrogen and oxygen

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

biomolecules

A

chemicals made inside a living thing

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

name the four main biomolecules

A

carbohydrates, lipids, proteins and vitamins

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

formula for ratio of elements present in carbs and an example

A

Cx(H2O)y - glucose - (C6H12O)

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

name the three types of carbohydrates

A

monosaccharides, disaccharides and polysaccharides

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

what is a single sugar unit made up from

A

a ring of carbon atoms

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

one difference between the three types of carbs

A

mono and di- sweet tasting and soluble

poly- slightly soluble and none sweet tasting

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

give and describe two examples of monosaccharides

A

glucose - made by plants in photosynthesis

fructose- much sweeter

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

disaccharide examples

A

maltose - germinating seeds - two glucose molecules

sucrose - (table sugar) glucose joined to fructose

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

polysaccharide example

A

starch (amylose)-

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

name a protein that has a fibrous structure

A

keratin

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

named mineral other than calcium that is required by plants

A

magnesium- helps form chlorophyll

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

name the metallic element present in haemoglobin

A

iron

35
Q

benedicts test

A

reducing sugar- glucose

36
Q

one structural carbohydrate and where found

A

cellulose forms plant cell walls

37
Q

one trace element required by humans and its role in the human body

A

iron- helps form haemoglobin

38
Q

name a method used to detect fat

A

brown paper

39
Q

identify a none metallic element other than H,C,O,N commonly found in proteins

A

sulfur

40
Q

elements in protein

A

carbon, hydrogen,oxygen and nitrogen

41
Q

name the two different biomolecular componenets of a lipid

A

one molecule of glycerol linked to three fatty acids

42
Q

where are phospholipids found in human cells

A

cell membrane

43
Q

phospholipid

A

fat like substances in which one of the fatty acids is replaced by a phosphate group or has a phosphate group added to it

44
Q

give a role of a named mineral other than iron that is required by the human body

A

calcium- helps form bones and teeth

45
Q

% of water by mass in a human cell

A

70%-90%

46
Q

trace elements required by humans

A

copper, iron and zinc

47
Q

polysaccharide found in plants

A

cellulose

48
Q

fat soluble vitamin and disorder

A

vitamin D- osteomalacia/rickets

49
Q

what name is given to the simplest units of carbohydrates

A

monosaccharids

50
Q

name a cataolic process that produces monosaccharides

A

digestion

51
Q

name two polysaccharides found in plants

A

starch and cellulose

52
Q

state on difference between fats and oils

A

fats solid at room temp

oils liquid at room temp

53
Q

state one mineral required by living things and a use

A

iron helps form haemoglobin

54
Q

name a reducing sugar

A

glucose

55
Q

explain why respiration is classified as a catabolic reaction

A

molecules are broken down and energy is released

56
Q

test for starch

A

iodine- brick red (negative) blue/black(positive)

57
Q

what is the structure of a lipid called

A

triglyceride

58
Q

starch

A

a polysaccharide found in plants

59
Q

glucose

A

monosaccharide

60
Q

amino acid

A

building block of protein

61
Q

protein

A

a long polypeptide/chain of over 200 amino acids

62
Q

cellulose

A

carbohydrate found in plant cell walls

63
Q

keratin

A

protein found in hair

64
Q

triglyceride

A

one molecule of glycerol linked to three fatty acids

65
Q

is energy release a feature of anabolic or catabolic reactions

A

catabolic

66
Q

name a polysaccharide that can be formed from glucose

A

starch

67
Q

give one way in which an amino acid differs from a polysaccharide in terms of chemical composition

A

contains nitrogen

68
Q

what do cabrohydrates and fats have in common in terms of chemical composition

A

mostly composed of carbon, hydrogen and oxygen

69
Q

how may one fat differ from another in terms of chemical composition

A

have a phosphate added to it-phosphorylated

70
Q

in carbohydrates which two elements are in the ratio 2;1

A

hydrogen and oxygen

71
Q

name a polysaccharide other than cellulose

A

starch

72
Q

why must solutions of starch be prepared on the day they are to be used

A

bacteria will grow over time

73
Q

describe a test for reducing sugar

A

benedicts solution - postitive - brick red
negative - remains blue

HEAT BUT NO BOIL

74
Q

give a role of lipids in cells

A

phospholipids form cell membranes

75
Q

how many common amino acids are found in proteins

A

20

76
Q

trace element

A

elements only needed in small amounts

77
Q

using benedicts solution name a dissaccharide sugar that would give a 1.positive result and 2. negative result

A

lactose - postive

sucrose - negative

78
Q

to which major food group to dissacharides belong

A

carbohydrates

79
Q

describe a test for protein

A

biuret test (sodium hydroxide and copper sulfate)
positive -bpurple - violet
negative - remains blue

80
Q

polysaccharide

A

carbohydrate composed of many sugar units

81
Q

catabolic reaction in an animal

A

respiration

82
Q

anabolic reaction in a plant

A

photosynthesis

83
Q

fat soluble vitamin

A

D

84
Q

fat composition

A

carbon, hydrogen and oxygen

Biology (17 decks)

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