biology spring term

Question 1

C in CORMMSS

Answer 1

change

Question 2

O in CORMMSS

Answer 2

organism

Question 3

R in CORMMSS

Answer 3

repeat for reliable results

Question 4

M1 in CORMMSS

Answer 4

measure 1

Question 5

M2 in CORMMSS

Answer 5

measure 2

Question 6

S1+S2 in CORMMSS

Answer 6

same

Question 7

how is yogurt made?

Answer 7

yogurt is made from milk by adding LACTOBICILLUS bacteria, which feeds on the lactose sugar in the milk and produces lactic acid.

Question 8

what is respiration?

Answer 8

respiration is a life process that happens inside cells so that they can obtain energy from food

Question 9

what is the word equation for aerobic respiration (respiration using oxygen)

Answer 9

glucose + oxygen —- carbon dioxide + water + energy

Question 10

bread - why does the dough rise?

Answer 10

C02 (carbon dioxide)

Question 11

bread - why add sugar?

Answer 11

to give the yeast food/energy

Question 12

what does optimum mean

Answer 12

best

Question 13

bread - what happens to the yeast cells in the cooking process

Answer 13

they are killed

Question 14

ginger beer - what microorganism was used to make the ginger beer?

Answer 14

yeast

Question 15

ginger beer - why did the liquid have to be be left for a few days to turn into beer?

Answer 15

time to ferment/respire

Question 16

ginger beer - what process was happening while being made?

Answer 16

fermentation/anaerobic respiration (respiration with oxygen)

Question 17

What waste chemical is produced in anaerobic respiration in animals?

Answer 17

lactic acid

Question 18

Name the microorganism that is used to make wine from grape juice.

Answer 18

yeast

Question 19

Name the organism that is usually used to produce ethanol from plant material.

Answer 19

yeast

Question 20

What is the scientific name for the process in which milk or beer is heated to kill any harmful microorganisms?

Answer 20

pasteurisation

Question 21

What substance, apart from yeast, is needed to make ethanol by fermentation?

Answer 21

glucose

Question 22

how is aerobic respuration used in the process of making bread

Question 23

word equation for anaerobic respiration

Answer 23

glucose → ethanol + carbon dioxide

Question 24

word equation for anaaerobic respiration

Answer 24

glucose — ethanol + carbon dioxide

Question 25

differences between fungi + bacteria cells -

Answer 25

bacteria - prokaryotic, peptidoglycan cell walls, smaller fungi - eukaryotic, chitin cell walls, bigger