# Life Sciences Grade 10 KwaZulu Natal June 2016 Paper & Memo

> Grade 10 Life Sciences question paper and memo from the KwaZulu Natal June 2016, 18 pages. Read online or get the free PDF download.

- Page: https://www.hlayiso.com/library/life-science-2016-june-qp-and-memo-2/006cf529-ec1d-48f4-b62e-f8a1351d0b46
- Updated: 2026-09-27
- Subject: Life Sciences
- Grade: Grade 10
- Document type: Question paper and memo
- Year: 2016
- Exam period: KwaZulu Natal June
- Curriculum: CAPS
- Pages: 18

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## About this document

Life Sciences · Grade 10 · KwaZulu Natal June · 2016. Question paper and memorandum, 18 pages. Read online or download the PDF.

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### Page 1

Basic Education

KwaZulu-Natal Department of Basic Education
REPUBLIC OF SOUTH AFRICA

QoS SRR RGRRRR SRS RR EER RRR RRR RRR RRS
t LIFE SCIENCES :
i. a
f COMMON TEST t
H JUNE 2016 "
errr rr rrr rrr err er errr rr rr re errr rr Trr rer errr ss
NATIONAL
SENIOR CERTIFICATE

MARKS: 150

‘a _ IME: 22 hours

N.B. This question paper consists of 13 pages.

### Page 2

Life Sciences Downl oaded from h | ay iso COM) June 2016 Common Test

CG — Grade. 10

INSTRUCTIONS AND INFORMATION

Read the following instructions carefully before answering the questions.
1. Answer ALL the questions.

2. Write ALL the answers in the ANSWER BOOK.

3.’ Start the answers to each question at the top of a NEW page.

4. Number the answers correctly according to the numbering system used
in this question paper,

5. Present your answers according to the instructions of each question,

6. ALL drawings must be done in pencil and labelled in blue or black ink.
7. Draw diagrams, flow charts or tables only when asked to do so. € }
8. The diagrams in this question paper are NOT necessarily drawn to scale.

9. Do NOT use graph paper.

10. You must use a non-programmable calculator, protractor and a compass
where necessary.

11. Write neatly and legibly.

Copyright Reserved Please Turn Over

### Page 3

Life Sciences

SECTION A
QUESTION 1

Downloaded from hlay 1SO.COMne 2016 Common Test

NSC - Grade 10

1.1 Various options are provided as possible answers to the following questions.
Choose the correct answer and write only the letter (A to D) next to
the question number — (1.1.1 to 1.1.5) in your ANSWER BOOK, for
example 1.1.6 D.

1.1.1. The chamber of the heart that pumps deoxygenated blood to the lungs via the
pulmonary artery is the ...

A

B
Cc
D

right atrium.
left ventricle.
left atrium.
tight ventricle.

QUESTIONS 1.1.2 to 1.1.3 refer to the following diagram of a phase of mitosis.

1.1.2 After completion of this division, the nucleus of each new cell will have ...

A

B
Cc
D

two chromosomes.
four chromatids.
four chromosomes.
eight chromosomes.

1.1.3 Which ONE of the following occurs in the phase drawn in the diagram above?

A

B
C
D

Copyright Reserved

DNA replication

Chromatin network unwinds to form visible chromosomes '
Chromosomes separate to form chromatids

Division of the cytoplasm

Please Turn Over

### Page 4

Life Solences. Downl oaded from hlay iso COUN) June 2016 Common Test

~ Grade 1

1.1.4 The following elements are found in some organic compounds:

(i) Hydrogen

(i) Nitrogen

(iii) Oxygen

(iv) Carbon

Which of the above elements are found in proteins but not in carbohydrates
and lipids?

A (), di), Gil) only

B (i) only

C (i) and (ili) only

D (ii) only

1.1.5 The diagram below represents a cross section through a dicotyledonous leaf.

The cell labelled A is ...

A spongy mesophyll.
B palisade mesophyll.
Cc epidermal cell.

D guard cell,

(5x2) (10)

Copyright Reserved Please Turn Over

©)

### Page 5

1.3

()

Life Sciences Downloaded from hlayiso.Comse 2016 commen test

NSC = Grade 10

Give the correct biological term for each of the following descriptions. Write
only the term next to the question number (1.2.1 to 1.2.10) in the ANSWER
BOOK.

1.2.1 Unicellular epidermal outgrowths that increase the absorption surface of
the root

1.2.2 Openings in the lower epidermis, responsible for gaseous exchange

1.2.3 The apparatus that is used to investigate the effect of environmental factors
on the rate of transpiration

1.2.4 The membrane system in a cell on which ribosomes sometimes occur
1.2.5 Blood vessel that carries oxygenated blood to the left atrium of the heart
1.2.6 The membrane around a vacuole

1.2.7 The largest artery in the body which leaves the left ventricle

1.2.8 The chamber of the heart which has the pacemaker in its wall

1.2.9 Carbohydrates made up of more than two monosaccharides

1.2.10 An organelle in a cell that contains digestive juices
(10 x 1) (10)

Indicate whether each of the statements in COLUMN | applies to A only, B

only, BOTH A and B or NONE of the items in COLUMN II. Write A only, B only,
BOTH A and B or NONE next to the question number (1.3.1 to 1.3.5) in the
ANSWER BOOK.

Bicuspid valve
Tricuspid valve
Fehling’s solution
lodine solution

(5 x 2) (10)

1.3.4 Found between the right atrium and the
right ventricle
1.3.5 Used to test for the presence of starch

COLUMN | | COLUMN Il
1.3.1. Contraction of the heart muscles A Systole
B Diastole
1.3.2 Source of reserve energy A Vitamins
B Fats
1.3.3 Site of protein synthesis A Ribosomes
: B Lysosoimes
A
B
A
B

Copyright Reserved Please Turn Over

### Page 6

Life Sclences Downl oaded f ram h | ay iso .cO m June 2016 Common Test

NSC ~ Grade 10

1.4 Study the pie charts below which show the ratio of different substances in
foods A to D.

Ratio of different substances in food A to D

Proteins

1.4.1. Which food (A, B, C or D) should be given to a person who wants to —

run a 40 km race?
1.4.2 Explain your answer in QUESTION 1.4.1.
1.4.3 Name the main component of food B.
1.4.4. Give TWO functions of the component named in QUESTION 1.4.3.

1.4.6 Which food (A, B, C or D) is recommended for somebody who lives
in cold place?

1.4.6 Explain your answer in QUESTION 1.4.5.

1.4.7 Name the only TWO substances that are not found in all of the food
types,

(1)
(2)
(1)
(2)

(1)
(2)

(2)
(41)

Copyright Reserved Please Turn Over

### Page 7

Life Sciences

Downloaded from hlayiso.com

NSC ~ Grade 10

June 2016 Common Test

1.5 Complete the following table by writing down only the numbers (1.5.1 to 1.5.9)
and your answer next to it.

Found in plants

Cell organelle | Function only/animals only/both
Golgi apparatus | 1.5.1 Both
1.5.2 Cellular respiration 1.5.3
Chloroplasts 1.5.4 1.5.5
Leucoplasts 1.56 4.5.7
1.5.8 Give colour to flowers and fruits | 1.5.9

Copyright Reserved

(9)

TOTAL SECTION A 50

Please Turn Over

### Page 8

Life Sciences Downl oaded f ram h | ay iso .coO m June 2016 Common Test

NSC ~ Grade 10

,

SECTION B
QUESTION 2

2.1 Study the micrograph of dividing animal cell.

2.1.1 Identify the phase shown in the micrograph above. (1)
2.1.2 Give an observable reason for your answer in QUESTION 2.1.1. (1)

2.1.3 Name the structure in the cell that is responsible for the event in
QUESTION 2.1.2. (1)

2.1.4 Draw a labelled diagram of the phase that occurs before the one shown
in the micrograph. Use only two chromosomes in your diagram, (5)

2.1.5 State the phase that comes after the phase shown in the micrograph

above. ; (1)

2.1.6 Name the disease caused by uncontrolled mitosis of the body cells. (1)

2.1.7 State ONE treatment of the disease mentioned in QUESTION 2.1.6. (1)
(11)

Copyright Reserved Please Turn Over

### Page 9

tie scenes Downloaded fram hlayiso.CoM ng s01s common Tet

NSC — Grade 10

2.2 Study the diagram below showing an investigation on osmosis.

Strong sugar solution

Pin holding
potato

fame PORES

poe Pure water

p~~ Beaker

2.2.1 State ONE planning step that should be considered before undertaking

such an investigation.
2.2.2 Explain the importance of the potato in this investigation.
2.2.3 List TWO observations that you would make in this investigation.
2.2.4 State TWO differences between the process investigated in the

diagram above and diffusion.

2.3 Study the following diagrams of the human tissues.

2.3.1 Identify tissues labelled A and B.
2.3.2 Name the organ in the body where tissue A is found.

2.3.3 State the function of tissue labelled B.

(4)
(9)

(2)
(1)
(1)

2.3.4 A person experiences a drop in the glucose level in his body below the
normal level. In addition, the tissue labelled A fails to increase the rate

of its contraction.

Explain the effect that this would have on the person.

Copyright Reserved

(4)
(8)

Please Turn Over

### Page 10

Life Sciences Downl oaded f ram h | ay iso ° co m June 2016 Common Test

NSC — Grade 10

2.4. Study the data in the following table showing the ability of tendons and ligaments
to stretch and answer the questions relating to it.

One sample is a tendon and the other is a ligament.

Amount of stretch measured inmm

Test1 | Test2 | Test3 | Test4| TestS | Average

Sample A | 0.04 0.08 0.4 0.06 | 0.9 1.18

Sample BI 2.4 19 18 2.0 18 9.6

2.4.1. Which sampie is most likely to be a tendon?
2.4.2 Explain your answer to QUESTION 2.4.1.
2.4.3 Give ONE function of ligaments.

2.4.4 Explain ONE feature of ligaments that make them well suited for
their function.

2.4.5 Why was the investigation performed five times?
2.4.6 Calculate the difference in the amount of stretch in sample A between

tests 2 and 4, Show all working.

2.5 Explain the significance of the intercellular air spaces between the spongy
mesophyll.

(2)
(1)

(2)
(1)

(3)
(10)

(2) €
(2)
(40)

Copyright Reserved Please Turn Over

### Page 11

Life Sciences

QUESTION 3

Downloaded fram hlayiso.co

NSC — Grade 10

3.1 Study the following plant tissues.

m

dune 2016 Common Test

3.1.1 Give the LETTER and the NAME of the tissue which:

(a)
(b)

Transports water and minerals up a plant

Provides mechanical support to the plant

(2)
(2)

3.1.2 Explain TWO ways in which tissue B is structurally suited for its function. (4)

Copyright Reserved

(8)

Please Turn Over

### Page 12

Life Sciences Downl oaded f ram h | ay iso .CO Mune 2016 Common Test

NSC - Grade 10

3.2 Read the passage below and answer the questions

The use of stem cells

A patient in King Edward Hospital has been injected with human embryonic
stem cells in an attempt to help him walk again. A group of doctors from
Mandela University hope that the stem cells will help the nerves in the damaged
spinal cord regenerate before the patient becomes permanently disabled.

The experiment uses cells obtained from five day-old embryos. This treatment
offers hope to patients suffering from spinal injuries. Researchers want to unlock
the potential of stem cells for new ways of treating cancer and other illnesses.

Some are against the use of human embryos to harvest stem cells.

3.2.1 What are stem cells?
3.2.2 Suggest the possible result of damage to the spinal nerves.
3.2.3 Explain why some people support the use of stem cells.

3.2.4 Suggest TWO reasons why doctors prefer to use stem cells from the
umbilical cord blood or placenta instead of embryonic stem cells.

3.3 The table below shows the percentage incidence of high level of cholesterol in
different population groups in KZN.

Population Group | Percentage of individuals
having high levels of cholesterol
30%

65%
10%
25%

OOD >

3.3.1 Draw a bar graph to represent the data in the table.

3.3.2 According to the graph, which population group (A, B, C or D), is least
affected by high cholesterol.

3.3.3 Give TWO possible reasons why the population group named in
QUESTION 3.3.2 is least affected by high cholesterol.

(2)

(2)

(2)
7

(6)

(2)
(9)

Q)

Copyright Reserved Please Turn Over

### Page 13

Life Sciences Downl oaded f rem h | ay iso . co Mane 2016 Common Test

NSC ~ Grade 10

3.4 The diagram shows the bones and muscles of the arm of a person holding
a heavy bag.

3.4.1 Identify bone A and B.

3.4.2 Name the type of synovial joint found between bones A and B.
3.4.3 Name and describe the disease that affects the synovial joints.
3.4.4 Explain why biceps and triceps are said to act antagonistically.

3.4.5 If the biceps are damaged at point X, explain how this would affect
the functioning of the arm.

3.5 Tabulate TWO differences between arteries and veins.

SECTION C
QUESTION 4

Describe how water loss from the leaves of a plant results in the movement of
water up the stem, explain how various environmental factors increase water loss

and state the structural features of leaves that help reduce water loss.
Content:

Synthesis:

NOTE: NO marks will be awarded for answers in the form of flowcharts tables or
diagrams.

(2)
(1)
(3)
(2)

(3)
(11)

(5)
(5)
(40)

a7)
(3)
(20)

TOTAL SECTION C: 20
GRAND TOTAL: 150

Copyright Reserved

### Page 14

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