Madhrasathul Ahmadhiyya, Male’

SECOND TERM TEST 2003

GRADE 8: BIOLOGY

Paper 1 Multiple Choice

Duration: 1 hour

Name: ……………………………………………………… Reg. No. ………….

Class: ………………………. Index: ………………….

Information and Instructions

Write your name, index number, class and register number.

There are forty questions in this paper.

For each question there are four possible answers. A, B, C and D. Choose the

one you consider correct and record your choice in soft pencil on a separate

answer sheet.

1 Which of the following exist only as parasites?

A ) Bacteria B) Fungi C) Protozoa D) Viruses

2 10g of starch was mixed with 53cm3 of enzyme solution. After 1 hour at 15C, 2.5g was changed

to sugar. The experiment was repeated at temperature of 25C. How much starch was broken

down in the second experiment?

A) 10g B) 20g C) 2.5g D) 5.0g

3 Which of the combinations identifies the function of each type of plant cell?

Palisade cells Xylem vessels Root hair cells

A) Photosynthesis Water transport Ion uptake

B) Photosynthesis Water transport Transpiration

C) Transpiration Sugar transport Ion uptake

D) Transpiration Sugar transport Sugar transport

4 The diagram shows an example of levels of organization in animal. Identify what is A?

A) Hepatic portal vein B) Circulatory system C) Nervous system D) Digestive system

5 The diagram shows some chemical molecules found in the human body and shows how they join

Madhrasathul Ahmadhiyya Second Term Test – 2003 Biology Grade 8 Paper 1 Page 1 of 6

to form larger molecules.

Identify molecules N and O

A) Amino acids and protein B) Fatty acids and fat

C) Glucose and Protein D) Glucose and glycogen

6 The diagram summarizes the early stages of sexual reproduction in an animal.

N O

Which one gives the correct number of chromosomes for N and O.

A) Diploid and Haploid B) Haploid and Diploid C) Diploid and Diploid D) Haploid and Haploid

7 Which organism can cause sexually transmitted disease such as syphilis and AIDS?

A) Bacteria Only B) Bacteria and Fungi C) Bacteria and Virus D) Fungi Only

8 Which structure in the plant cell contains chromosomes?

9 Which of the following is an energy-rich carbohydrate stored in large in quantities in liver and

muscle cells?

A) glucose B) glycogen C) haemoglobin D) starch

10 Which component of the diet prevents constipation?

A) Minerals B) Proteins C) Fibres D) Vitamins

11 The diagram shows four agar blocks that were placed in a dish and covered with a solution of a

coloured stain. Which block has the largest surface area to volume ratio and so will be completely

Madhrasathul Ahmadhiyya Second Term Test – 2003 Biology Grade 8 Paper 1 Page 2 of 6

stained most rapidly?

12 The diagram shows the alimentary canal where the enzyme responsible for the first stage of

protein digestion produced.

13 The Fig 13.1 is a drawing of a sample of a red blood cell seen under a microscope. The actual

size of the RBC is 0.007mm.

1cm

Fig 13.1

Calculate the magnification of Fig 13.2.(Give your answer to the nearest unites)

A) 1429 B) 1400 C) 1249 D) 1942

14 A mature xylem vessel in a woody plant has

A) a cell wall only B) a cell wall and a vacuole

C) a cell membrane, cytoplasm and a nucleus D) cytoplasm, a cell wall and a nucleus

15 Which substances are needed in the diet to prevent rickets?

A) calcium and vitamin B) iron and vitamin D C) iron and vitamin c D) calcium and vitamin D

16 Which chemical change takes place in mammals (eg. Human) but not in green plants?

Madhrasathul Ahmadhiyya Second Term Test – 2003 Biology Grade 8 Paper 1 Page 3 of 6

A) glucose cellulose B) starch glucose

C) glycogen glucose D) glucose starch

17 Cell wall of fungi is made of:

A) cellulose and polysaccharides B) protein and polysaccharides C) chitin D) cellulose

18 Which one of the following result of eating too much animal fat.

A) obesity B) constipation C) marasmus D) tooth ache

19 The virus nucleic core made from:

A) RNA only B) DNA only C) DNA or RNA D) Protein

20 Which of the following are not the main functions of the liver?

A) formation of bile B) deamination C) production of heat D) absorption of soluble digested food

21 During yoghurt production milk is heated to:

A) 9C B) 100C C) 190C D) 90C

22 Which of the following foods contains the highest concentrations of protein and iron?

A) citrus fruits B) fresh vegetables C) meat D) bread

23 The diagram shows four different cells as seen through a microscope.

1. 2. 3. 4.

Which cells are not plant cells?

A) 1,2 only B) 2 only C) 1,2,3 only D) 1,2,3 and 4 only

24 The enzymes used in cheese production is:

A) rennin B) pepsin C) amylase D) lipase

25 Name the stage which refers to the absorption of digested food into the blood stream?

A) ingestion B) absorption C) assimilation D) digestion

26 Which of the following chemical substance is present in the gastric juice, kills bacteria and

provides pH 2 to 3 to activate the protease enzyme?

A) NaOH B) mucus C) HCl D) NH4 OH

27 Which of the following do not have both nucleus and cell wall?

A) Muscle cell B) Red blood cell C) Root hair cell D) Xylem vessels

28 The diagram represents a model of enzyme action

Which term correctly identify A, B, and C?

A B C

Madhrasathul Ahmadhiyya Second Term Test – 2003 Biology Grade 8 Paper 1 Page 4 of 6

A) substrate enzyme product

B) product enzyme substrate

C) product substrate enzyme

D) enzyme product substrate

29 Which of the following differences between plant and animal cells is wrong?

30 The white sticky mixture of food and bacteria which builds up on the tooth is called:

A) plaque B) cement C) clot D) pain

31 Which secretion, released into the alimentary canal contains no enzyme but speeds up fat

digestion.

A) bile B) intestinal juice C) pancreatic juice D) saliva

32 The diagram below shows a section through a villus.

What is the function of structure X?

A) to absorb amino acids B) to transport glucose

C) to transport fats D) to carry blood

33 The table shows observations made during tests carried out on samples of a particular food.

What did the food contain?

34 The diagram below shows a cell from the leaf of a plant. Which part traps light energy?

Madhrasathul Ahmadhiyya Second Term Test – 2003 Biology Grade 8 Paper 1 Page 5 of 6

Plant cell Animal cell

A has a thick cell wall outside the cell

membrane.

does not have a cell wall

B does not have fixed regular shape has a fixed regular shape

C has a cell vacuole containing cell sap no cell vacuole, cytoplasm fills the cell

D often contains chloroplasts never contains chloroplasts

test observation

Biuret test for protein Purple colour

Benedicts test for

reducing sugar

Pale blue colour

Iodine test for starch Blue black colour

protein reducing sugar starch

A

B

C

D

35 The diagram shows an experiment using a partially permeable membrane.

What is the name of the process responsible for the movement of reducing sugar molecules into

the surrounding water?

A) absorption B) active transport C) diffusion D) osmosis

36 Which one of the following is not a correct statement about fats?

A) high in energy contents (i.e. 1g of fat contains 39KJ)

B) used for growth and tissue repair.

C) can be made from excess carbohydrates or proteins in the diet.

D) for energy, food storage and insulation are the main jobs.

37 Which of the following enters plant cell by active transport?

A) carbon dioxide B) nitrate ions C) oxygen D) water

38 Identify the dental formula of a (adult) man.

A) i = 2/2 c = 1/1 Pm = 2/2 m = 3/3 B) i = 3/3 c = 1/1 Pm = 3/3 m = 2/2

C) i = 0/3 c = 1/1 Pm = 3/3 m = 1/1 D) i = 1/2 c = 2/2 Pm = 3/2 m = 2/3

39

40

Which of the following micro organism related with alcohol production?

A) DNA virus B) Bacteria C) Yeast D) Penicillium

Starvation is particularly serious in children because they:

A) create resistance make them to become obesity B) only affect the growth

C) affect bones and teeth. D) stop growing and lose their resistance to diseases.

= GOOD LUCK =

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