Brainscape's Knowledge GenomeTM

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


See full index

Biology (9-1) Gcse higher > Biogenetics > Flashcards

Biogenetics Flashcards

1
Q

What does the chemical symbol C6H12O6 represent

A

Glucose

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

What is meant by a limiting factor for the rate of photosynthesis

A

A factor that stops photosynthesis happening any faster

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

Explain why the rate of photosynthesis decreases if the temperature is too high

A

Enzymes become denatured so the rate of photosynthesis rapidly decreases

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

What could you measure to show the rate of photosynthesis

A

Oxygen production

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

What is the inverse square law for light intensity

A

1➗distance2

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

Why might a farmer want to increase the rate of photosynthesis in her green house of tomatoes

A

So they grow bigger and be can sold for a bigger profit

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

Give two examples of how animals use the energy transferred by respiration

A

To contract muscles

To regulate body temperature

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

What is metabolism

A

The sum of all reactions that happen in a cell or the body

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

What are the reactants of aerobic respiration

A

Glucose and oxygen

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

What is the process of anaerobic respiration in a yeast called

A

Fermentation

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

State three changes that take place in the body during vigorous exercise

A

Breathing rate increases breath volume increases and heart rate increases

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

Where in a plant cell does photosynthesis take place

A

The chloroplasts

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

How is energy transferred to a plant from its environment for photosynthesis

A

Light energy is transferred to the chloroplasts from the environment

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

What is an endothermic reaction

A

Taking in heat from surroundings

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

Name the products of photosynthesis

A

Glucose and oxygen

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

What type of molecule is formed from combining glucose molecules with nitrate ions

A

Makes amino acids which makes protein molecules

17
Q

Why do plants store glucose as starch

A

So it’s ready for use when there is a decrease is photosynthesis or when it can’t happen eg winter

18
Q

What effect would a low carbon dioxide concentration have on the rate of photosynthesis

A

Photosynthesis would decrease as it’s needed to carry out photosynthesis

19
Q

What effect would very low temperature have on the rate of photosynthesis

A

Photosynthesis would decrease because the enzymes are denatured

20
Q

Describe a method that could be used to measure the effect of light intensity on the rate photosynthesis

A

1) put a source of light at a distance away from pond weed
2) leave be pond weed to photosynthesise so oxygen can be produced and go into the capillary tube
3) measure the size of the bubble using a ruler in the syringe
4) control variables such as temperature and time
5) repeat at different distances

21
Q

In the inverse square law how are light intensity and distance linked

A

As distance increases light intensity decreases so they are inversely proportional

22
Q

Give one way that the temperature can be decreased in a green house

A

Use shades and ventilation to decrease temperature

23
Q

Give one way that the level of carbon dioxide can be increased in a green house

A

Use a paraffin heater

24
Q

What is respiration

A

The process of transferring energy for glucose which goes into every cell

25
Q

What is an exothermic reaction

A

A reaction that gives out energy

26
Q

What process transfers energy to make new molecules in cells

A

Respiration

27
Q

Give three examples of metabolic reactions

A

Lots of small glucose molecules joining together to form starch
Glycerol and three fatty acids join up to make a lipid
Glucose is combined with nitrate ions to make proteins

28
Q

Name the products of aerobic respiration

A

Carbon dioxide and water

29
Q

What is produced by anaerobic respiration in muscle cells

A

Latic acid

30
Q

What is the word equation for anaerobic respiration in yeast cells

A

Glucose ➡️ ethanol + carbon dioxide

31
Q

Name two of the products of the food and drink industry that fermentation is needed for

A

Ethanol is used for alcohol

Carbon dioxide is used to make bread to make it rise

32
Q

What happens to the muscles when they become fatigued

A

Latic acid builds up in the muscles which is painful

33
Q

In what organ is Latic acid converted back to glucose

A

Liver

Biology (9-1) Gcse higher (5 decks)

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