Brainscape's Knowledge GenomeTM

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


See full index

Biology > Year 8 Term 2 > Flashcards

Year 8 Term 2 Flashcards

1
Q

Where are carbohydrase found ?

A

Mouth, pancreas, small intestine

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

Where are protease found ?

A

Stomach, pancreas, small intestine.

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

Where are lipase found ?

A

Pancreas, small intestine.

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

What is produced from carbohydrase ?

A

Sugar molecules

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

What is produced from protease ?

A

Amino acids

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

What is produced from lipase ?

A

Glycerol and fatty acids

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

What happens in the gullet/oesophagos ?

A

Food passes down this tube

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

What happens in the mouth ?

A

Food is chewed and mixed with saliva.

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

What happens in the stomach ?

A

Food is mixed with digestive juices and acids.

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

What happens in the large intestine ?

A

Water passes back into the body leaving feces.

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

What happens in the small intestine ?

A

Digestion is completed and nutrients pass Ito the blood.

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

What does Benedict solution test for ?

A

Sugar

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

What does oil and water test for ?

A

Oil

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

What does iodine test for ?

A

Starch

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

What does biuret solution test for ?

A

Protein

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

How do you turn a food into a colourless testable solution ?

A

Bring it with water and filter through muslin.

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

What are the key nutrients in addition to water that we need are ?

A

Carbohydrates, protein, fats, fibre, minerals and vitamins.

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

What type of diet do we need ?

A

A balanced/varied diet.

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

What is the method of test for Benedict solution ?

A

Put sugar/solution and Benedict solution together in 90 degree water.

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

What is the method of test for oil and water ?

A

Put one drop of oil and water on a piece of filter paper.

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

What is the method of test for iodine ?

A

Starch/solution with 2 drops of iodine.

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

What is the method of test for biuret ?

A

Add biuret to egg/ solution.

23
Q

What is a positive result of Benedict solution ?

A

Went from Blue to Brick red

24
Q

What is a positive result of oil and water ?

A

A greasy transparent mark will be left on paper from the oil.

25
Q

What is a positive result of iodine ?

A

Went from yellow to dark blue.

26
Q

What is a positive result of biuret ?

A

Went from blue to purple

27
Q

What is one negative effect on health of high sugar foods ?

A

It can lead to obesity

28
Q

When food is burned what is transferee to its surroundings ?

A

Energy

29
Q

What is the experiment to investigate the energy of food content ?

A

Burn food under a test tube of water with a thermometer and the higher temperature the higher energy in food.

30
Q

What is energy measured in ?

A

Joules, kilojoules or calories.

31
Q

What can excess sugar mean ?

A

You take in too much sugar meaning you become overweight or diabetes.

32
Q

What can excess fat lead to ?

A

Obesity

33
Q

Why is some fat essential ?

A

Production of new cells and the correct functioning of hormones.

34
Q

What is the name for the thing caused by lack of vitamins or minerals ?

A

Deficiency diseases

35
Q

What is a lack of Vitamin D called ?

A

Rickets

36
Q

What is a lack of Vitamin A called ?

A

Night blindness

37
Q

What is a lack of Iron called ?

A

Anaemia

38
Q

What is the experiment to prove that digestion is mainly a chemical process ?

A

Get ham, carrot, pepsin, Hydrochloric acid and water. Put them in test tubes and then leave them for a week after that see what had happened to the carrot and ham.

39
Q

What is evolution ?

A

It’s the scientific idea that all species on Earth have gradually developed over millions of years.

40
Q

What is a balanced diet ?

A

It has a variety of different types of foods and having the right amount of nutrients for good health.

41
Q

What is natural selection ?

A

Mechanism by which an organism better adapts to their environment.

42
Q

Which scientist proposed the theory of evolution ?

A

Charles Darwin

43
Q

What does evolution mean ?

A

The process by different kinds of living organism are believed to have developed from earlier forms in history.

44
Q

What’s the difference between extinct and endangered ?

A

Extinct is when an animal no longer exists and endangered is when there are still some left in the world.

45
Q

Create a simple evolutionary sequence

A

1.ammonite. 2.nautilus. 3.limpet. 4.snail. 5.slug

46
Q

What does peer review mean ?

A

Where a scientists work is checked by another scientist before being published.

47
Q

Name the process by which organisms evolve.

A

Natural selection

48
Q

What does biodiversity mean ?

A

A measure of the variety of organisms in the world.

49
Q

How can you protect endangered species ?

A

Conservation, captive breading and gene banks

50
Q

Describe the process of digestion .

A

Breakdown of large insoluble molecules into small soluble molecule, enzymes help to speed up digestion.

51
Q

Give a structured account of digestion

A

Starch is digested in mouth, Protein is digested in stomach, Starch, Protein and Fat is digested in Small intestine.

52
Q

Describe the role of enzymes .

A

they speed up digestion (breaking up large molecules into smaller ones) without being used up.

53
Q

Describe the role of bacteria in digestion

A

they help break down food and make important vitamins.

Biology (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions