2 molecular biology

Question 1

how many bonds does carbon make

Answer 1

4

Question 2

what angles are between carbon bonds

Answer 2

109.5

Question 3

how much nitrogen is in the air

Answer 3

80%

Question 4

how much oxygen is in the air

Answer 4

19%

Question 5

what is the remainder of air after nitrogen and oxygen

Answer 5

argon and CO2

Question 6

what is a molecule

Answer 6

the smallest particle of a compound which has the chemical properties of that compound.

Question 7

why is water a good solvent

Answer 7

it has polar molecules which can seperate the charged ions

Question 8

saturated fatty acids typically come from

Answer 8

animal sources

Question 9

unsaturated fatty acids typically come from

Answer 9

vegetarian sources

Question 10

what types of substances are proteins and enzymes

Answer 10

nitrates

phosphates

Question 11

what does anabolism do

Answer 11

makes macromolecuels from monomers

Question 12

anabolism =

Answer 12

building up

Question 13

catabolism=

Answer 13

breaking down

Question 14

what does do monomers and monosaccharides anabolise into

Answer 14

polymers and polysaccahrides

Question 15

what does catabolism do

Answer 15

makes smaller molecules from macromolecules

Question 16

what property of carbon atoms helps them to form such a large range of stable compounds

Answer 16

because they can make 4 bonds

Question 17

name three molecules in living things which contain many carbon atoms

Answer 17

lipids
proteins
carbohydrates

Question 18

state the meaning of the term cellular metabolism

Answer 18

all the enzyme catalysed chemical reactions taking place inside the cell

Question 19

describe the difference between anabolism and catabolism with referecne to macromolecules in living things

Answer 19

macromolecules are built from smaller monomer units,
e.g. cellulose is made from many glucose molecules joined in a chain.

anabolism is the part of metabolism which makes these larger molecules from smaller ones

catabolism is the part of metabolism which breaks the large molecules into smaller ones