You need to login before answering these questions


O Level Biology June 2012 5090/11

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS

General Certificate of Education Ordinary Level

88fd65acce6fc9eec4c7fd6f1fbcbbc4.png

BIOLOGY 5090/11
Paper 1 Multiple Choice
5090/11
May/June 2012
1 hour


Additional Materials:
Multiple Choice Answer Sheet
Soft clean eraser
Soft pencil (type B or HB is recommended)


READ THESE INSTRUCTIONS FIRST


Write in soft pencil.
Do not use staples, paper clips, highlighters, glue or correction fluid.
Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you.

There are forty questions on this paper. Answer all questions. 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 the separate Answer Sheet.


Read the instructions on the Answer Sheet very carefully.


Each correct answer will score one mark. A mark will not be deducted for a wrong answer.
Any rough working should be done in this booklet. 


1

What is found in both animal and plant cells?

2

The diagram shows part of a leaf with three spongy mesophyll cells labelled P, Q and R. The  arrows show the direction of water movement by osmosis.

94d1ca80c40ae98ba5fb91634f278cfc.png

Which is the correct order of water potential in the cells from the highest to the lowest?

3

Identical pieces of potato are placed in sucrose solutions of different concentrations. After three hours, the mass of each potato piece is measured. 

Which graph shows the results of this experiment?

4

Starch is digested to maltose by the enzyme amylase.

According to the ‘lock and key’ hypothesis, which is the ‘key’ and which is the ‘lock’?

5

The graph shows how the rate of photosynthesis varies with light intensity at two different temperatures. Other variables are kept the same.

a61dfc108efff318a2ee47ba99a1df57.png

In which sections of the graph is light intensity limiting the rate of photosynthesis?

6

The diagram shows cells in a section through a leaf of a green plant.

(No cell contents are shown.)

2f04cd4d966fa2909e857e1ed55c9236.png

Which cells contain chloroplasts?

7

Two aquarium tanks are set up as shown.

d5195ca51075ea3cebdfa014992f2f14.png

After a week, all the animals in tank Y show signs of distress.

This is because the animals have run out of

8

Which chemical elements are present in both fats and proteins?

9

Which two foods would provide the best sources of carbohydrates, calcium, fibre (roughage) and vitamin C?

10

The diagram shows a section through a villus.

460bce1d401e00ff114cdb75ef53056d.png

Which sequence correctly describes the functions of the numbered parts?

11

The photomicrograph shows part of a section through a stem.

cb4cdf28e2e7d45178f12eab0f807b58.png

The contents of cell X and the contents of cell Y are each tested with Benedict’s reagent and with iodine solution.

What results are expected?


key
+ = positive result
– = negative result

12

The diagram shows a section through a green leaf.

1d03ee5f1fd5fd88133e0a8255d35dcf.png

The arrows represent the movement of

13

The diagram shows the direction of blood flow in the human body.

8f61bc8b7b31bda1e8f0de1d3e7e652c.png

Which numbered stages have blood containing the most oxygen?

14

Which row in the table describes the features of the pulmonary vein?

38d3c2a3093700d44d439b1f6cf2dde2.png 

15

Which is a difference between plasma and tissue fluid?

7785672359d412146a2eb083fdd62a57.png

16

What is the equation for anaerobic respiration in yeast?

17

The diagram represents the human respiratory system.

283750f1f9e04f05c5eb5a625fd0e50e.png

Which structures contain muscles that contract when breathing in?

18

Which process does not require energy?

19

The diagrams show the positions of the bones of the forearm as it is raised. The muscles which move the bones are only shown in the first diagram.

b6fa0b2c51892490087cad0059ae44e6.png

What is the action of the muscles as the arm moves from the first position to the second and then to the third?

20

In a kidney machine, protein molecules are not lost from the blood.

How is loss of protein prevented?

21

The diagram shows skin temperature of a human when exposed to warm air and then exposed to cold air.

3d7cfcaa5c2c848c0054630a33fd2b5a.png

What causes the observed change in skin temperature on exposure to cold air?

22

The graph shows the changes in blood glucose concentration following the injection of a small amount of a substance into the blood of a person at time X.

28d1f35a10db48c134ac6ef97f992814.png

Which substance was injected at time X?

23

The diagram shows a section through an eye.

55468b09a9fc982d7ab17e916b023b50.png

Which parts help to focus an image on the retina?

24

What happens when the body temperature of a human is controlled?

25

The table shows some of the possible effects of three drugs.

Which combination of effects is correct?

26

The graph shows, for one country, the percentage of people who smoked cigarettes in the years 1960–2000.

27dc2336b4187d6298e3e5aa5b2f6fa9.png

Which statement about what happened after 1960 is supported by the graph?

27

Which statement describes a problem of using antibiotics?

28

The diagram shows a food web.

7964bd1c7b27305edf57559d98658a29.png

What is the energy source for this food web?

29

The diagram shows a food web in a pond.

170379d88a7e5d9b970264cabac131fa.png

Which of the organisms is a carnivore, which is a herbivore and which is a producer?

30

The diagram shows part of the nitrogen cycle.

At which stage do bacteria cause decomposition?

01484d9b29aaa9e8d280f912a0438076.png

31

Which method of control would not be effective against the spread of the malarial parasite?

32

The graphs show how the levels of dissolved oxygen and nitrates change along the length of a river.

Which graph shows the effect of sewage entering the river at the point marked X?


6f6b8620277c646d21f91e7846a49336.png

33

The seeds of some plants will not normally germinate until they have been in the ground for several months.

Some seeds were collected from a plant of this type.

The seeds were divided into three groups.

Each group of seeds was put into a shallow dish and covered with water.

The lid that was used was loose fitting so that oxygen could reach the seeds.

      Group 1 were intact seeds.

      Group 2 were seeds from which the testas had been removed.

      Group 3 were seeds from which the testas had been removed, but the testas were placed separately in the same dish.

466972d77f3361d8d74e45ef0eeca645.png

Only the seeds in Group 2 germinated.

What would be the most logical extension of this experiment?

34

The diagram shows the life cycle of a species of plant.

During which stage does meiosis (reduction division) occur?

268e4c3e51bcdd295a3ddcd54c706f10.png

35

Which disease is first recognised by painless ulcers which can be anywhere on the body?

36

In the female reproductive cycle, which sequence of events could occur in 28 days?

37

Bacteria can be genetically engineered to produce human insulin by adding a human insulin gene to the bacterial DNA.

An advantage of this procedure is that

38

A person has blood group A.

Which statement about his genotype is correct?

39

In fruit flies, the allele for an ebony coloured body is recessive to the allele for a grey coloured body. In an investigation, an ebony-bodied fly was crossed with a grey-bodied fly.

What will be the body colour of the offspring if the grey-bodied fly was heterozygous?

40

Which statement about dominant and recessive alleles is not correct?

___

Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity.

University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.

© UCLES 2012

5090/11/M/J/12


Suggest answer