8a8b sats questions booklet

Unit 8A (Food and Digestion) and Unit 8B (Respiration)

Question No.

Level Mark Question No.

Level Mark

1(97) 3 5 6(01) 6 6

2(01) 3 6 7(05) 6 6

3(05) 3 7 8(05) 7 5

4(99) 4 6 9(01) 8 5

5(97) 5 5 10(01) 8 5

Rainford High Technology College 1


1. Some people have unbalanced diets. This can give them problems with their health.

(a) Draw one line from each unbalanced diet to the health problem it can cause.

too m uch fat not m uch energy

too m uch sugar heart disease

not enough pro te in tooth decay

no t enough carbohydra te poor grow th

unbalanced d iet health p roblem

4 marks

(b) Explain why eating a lot of chips every day is bad for your health.

....................................................................................................................

....................................................................................................................

1 mark

Maximum 5 marks



2. The card shows the amounts of fat and fibre in some types of food and drink from a café.

Chez Jean Café

fatin g

fibrein g

type of burger

sing le burger

doub le burger

cheeseburger

type of drink

straw berry m ilkshake

m ed ium co la

m ed ium o range ju ice

type of potato

regular fries

baked pota to

17

38

21

8

0

0

15

0

0 .8

1 .2

1 .0

0

0

0

3

9



(a) From the card above, choose a meal consisting of a burger, a drink and some potato, to give:

(i) the least fat;

1 mark

(ii) the most fibre.

1 mark

Write your answers in the table below.

Food and drink meal with the least fat meal with the most fibre

type of burger

type of drink the drinks do notcontain fibre

type of potato

(b) Draw a line from each nutrient to the main reason why it is needed.Draw only four lines.

nutrient main reason why the nutrient is needed

• to keep the intestine working properly

calcium • • for healthy teeth and bones

fibre • • for insulation

protein • • to provide energy

sugar • • for growth and repair

4 marks

Maximum 6 marks



3. The diagram below shows the digestive system.

(a) (i) Give the letter which labels the stomach.

............

1 mark

(ii) Give the letter which labels the small intestine.

............

1 mark

(iii) Glucose is absorbed in the small intestine.

What carries glucose from the intestine to other parts of the body?

......................................................................................................................

1 mark



(b) Some athletes take glucose tablets before a race.

Why do they take glucose?Tick the correct box.

for growth for healthy bones and teeth

to prevent disease to provide energy

1 mark

(c) The table below shows what four people ate for lunch.

name lunch

Jon chicken and salad

Nadia cheeseburger and chips

Clare lemonade and a jam doughnut

Zak mushroom soup and an orange

(i) Whose lunch had the most sugar in it?

...........................................................

1 mark

(ii) Whose lunch had the most fat in it?

...........................................................

1 mark

(iii) Eating too much fat is bad for you.Give one reason for this.

......................................................................................................................

......................................................................................................................

1 mark

maximum 7 marks



4. Drawings A, B, C, D and E show the positions of five organ systems in the human body.

(a) The names of the five organ systems are given in the table. By each name, write the letter of the drawing which shows the organ system.

name of organ system

circulatory system

digestive system

reproductive system

respira tory system

skele ton

letter of the drawing ofthe organ system

5 marks

(b) Which one of these organ systems is completely different in a man and a woman?

..........................................................................................................................

1 mark

Maximum 6 marks



5. The information below was taken from the label of a can of baked beans in tomato sauce.

nutritional information list of ingredients

100g provides:energy 406 kJpro tein 5.4 gto tal ca rbohydrate 17 .6 gsugar 6.0 gfat 0.4 gf ibre 3.7 g

haricot beans, tom ato purée ,w ate r, sugar, m odif ied starch,sa lt, paprika , on ion powder,herb extracts, sp ices

(a) A healthy diet contains a number of groups of substances. The nutritional information lists some of these.

Give one group of substances, needed for a healthy diet, which is missing from the nutritional information.

.................................................

1 mark

(b) (i) Which food, shown in the list of ingredients, provides the most protein in this can?

........................................

1 mark

(ii) Give one reason why we need protein in our diet.

..........................................................................................................

1 mark

(c) (i) Name one food, shown in the list of ingredients, which provides fibre.

........................................

1 mark

(ii) Why is fibre needed for a balanced diet?

..........................................................................................................

..........................................................................................................

1 mark

Maximum 5 marks



6. The diagram below shows part of the respiratory system.

(a) From the diagram, give the letters which label:

(i) the trachea; …………………

1 mark

(ii) alveoli. …………………

1 mark

(b) (i) Which gas passes into the blood from the alveoli?

……………………………….…

1 mark

(ii) Which gas passes out of the blood into the alveoli?

……………………………….…

1 mark

(c) The walls of the capillaries and the alveoli are very thin. Why do they need to be thin?

……………………………………………………………………………………….

……………………………………………………………………………………….

1 mark

(d) There are millions of alveoli in the lungs. They provide a very large surface area. Why is a large surface area necessary?

……………………………………………………………………………………….

……………………………………………………………………………………….

1 mark

Maximum 6 marks


voice box

P

Q

R

S


7. (a) The diagram shows a group of cells from the lining of the mouth.

(i) Give the name and function of part P.

name of part P

......................................................................................................................

1 mark

function of part P

......................................................................................................................

......................................................................................................................

1 mark

(ii) Which word describes this group of cells?Tick the correct box.

compound organism organ tissue

1 mark



(b) The diagram below shows muscle cells from the wall of the human intestine.

(i) Muscle cells can contract.

Give one reason why muscles are needed in the intestine.

......................................................................................................................

......................................................................................................................

1 mark

(ii) Other cells in the intestine produce enzymes.

What effect do enzymes in the intestine have on nutrients such as protein?

......................................................................................................................

......................................................................................................................

1 mark

(iii) Which of the following is required in the diet to keep food moving through the intestine?Tick the correct box.

fat fibre

protein starch

1 mark

maximum 6 marks



8. Andy investigated the digestion of a protein called gelatin.He used an enzyme called pepsin from the human stomach, and three cubes of gelatin

each 1 cm3.He set up the experiment shown below and put the test-tubes in a water-bath at 37°C.He measured the time for the digestion of the gelatin.

(a) Why did Andy choose a temperature of 37°C for the water-bath?

...............................................................................................................................

...............................................................................................................................

1 mark

(b) In test-tube C, the cube of gelatin that had been cut into pieces was digested more quickly than the whole cube in test-tube A.

Give the reason for this.

...............................................................................................................................

...............................................................................................................................

1 mark



(c) The boiled pepsin in test-tube B did not digest the gelatin.

Why did boiling this enzyme stop it working?

...............................................................................................................................

...............................................................................................................................

1 mark

(d) Protein is needed for growth and repair.The digestion of protein begins in the stomach and is completed in the small intestine.

(i) What are the products of the digestion of protein?Tick the correct box.

amino acids energy

sugars vitamins

1 mark

(ii) Why is it necessary to digest protein before it can be used for growth and repair?

......................................................................................................................

......................................................................................................................

1 mark

maximum 5 marks



9. (a) Mammals use fat as a long-term store of energy.

(i) The diagram shows some simple apparatus for investigating the amount of energy released by burning fat.

4.2 kJ of energy will raise the temperature of 1 kg of water by 1°C.1 g of fat contains 38.5 kJ of energy.

Calculate the rise in temperature of 1 kg of water if 0.5 g of fat is burned. Show your working.

…………………………………………………………………………………

…………………………………………………………………………………

…………………………………………………………………………………

…………………………………………………………………………………

2 marks

(ii) Fat is stored in layers beneath the skin. This fat is part of the body’s energy reserve. Give another function of the layers of fat.

…………………………………………………………………………………

…………………………………………………………………………………

1 mark

(b) Mammals use glucose as a fuel in respiration in their cells. The word equation for respiration is:

glucose + oxygen carbon dioxide + water

Mammals with a high rate of respiration need to have a high heart rate.Explain why.

……….………………………………………………………………………………

……….………………………………………………………………………………

……….………………………………………………………………………………

……….………………………………………………………………………………

2 marks


the rm om ete r

beaker con ta in ing1 kg of w ater

d ish ofburn ing fat

d raugh tsh ield


Maximum 5 marks

10. The table below shows the pH in different parts of the digestive system.

part ofdigestive system

pH

mouth 6.5 – 7.5

stomach 1.0 – 2.5

small intestine 7.0 – 8.0

(a) Amylase is an enzyme which speeds up the digestion of starch.Amylase is produced by the salivary glands.

Why does amylase stop working in the acidic conditions in the stomach?

……….………………………………………………………………………………

……….………………………………………………………………………………

1 mark

(b) As food passes from the stomach into the small intestine, a different digestive juice is mixed with the food.

(i) Use the information in the table to suggest what type of substance this digestive juice is.

…………………………………………………………………………………

1 mark

(ii) What type of chemical reaction takes place as this digestive juice mixes with the acid from the stomach?

…………………………………………………………………………………

1 mark

(c) After food containing starch is digested, a person’s blood sugar level rises.The body responds by producing a chemical called insulin. Insulin lowers the blood sugar level again.

The graph below shows how a person’s blood sugar level changes after eating two different samples of food.



2

1

0

key

w hite bread

pasta

b lood sugar,in m g /cm

0 1 2 3 4tim e afte r ea ting food sam ples, in hours

3

(i) Use the graph to help you to explain why less insulin would be produced one hour after eating pasta than one hour after eating white bread.

…………………………………………………………………………………

…………………………………………………………………………………

1 mark

(ii) Suggest the normal blood sugar level in this case.

…………………………………………………………………………………

1 mark

Maximum 5 marks


8a8b sats questions booklet

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