FINAL - Life Science P1 - Pilot Nov 06

NATIONAL SENIOR CERTIFICATE

GRADE 10

LIFE SCIENCES P1 NOVEMBER 2006

MARKS: 150 TIME: 2 hours

This question paper consists of 18 pages.

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Life Sciences/P1

2 NSC

DoE/November 2006

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 answer 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.

Write neatly and legibly.

6.

If answers are NOT presented according to the instructions of each question,

candidates will lose marks.

7.

ALL drawings should be done in pencil and labelled in blue or black ink.

8.

Only draw diagrams or flow charts when requested to do so.

9.

The diagrams in this question paper are NOT necessarily drawn to scale.

10.

The use of graph paper is NOT permitted.

11.

Non-programmable calculators, protractors/compasses may be used.

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Life Sciences/P1

3 NSC

DoE/November 2006

SECTION A

QUESTION 1

1.1

Various possible options are provided as answers to the following questions.

Choose the correct answer and write only the letter (A - D) next to the

question number (1.1.1 - 1.1.6) in the answer book, for example 1.1.7 D.

1.1.1 1.1.2 1.1.3 1.1.4

Which ONE of the following performs a function OPPOSITE to that of a chloroplast?

A Leucoplast B Nucleolus C Chromosome D Mitochondrion

The function of the nucleolus is also related to the functioning of the ...

A chloroplast. B plasmalemma. C mitochondrion. D ribosome.

In which of the following cells would you expect mitochondria to be most numerous?

A Bone cells B Fat storage cells C Muscle cells D Nerve cells

Which of the following shows the correct path of air movement during inhalation?

A Trachea ? bronchus ? bronchioli ? alveoli B Alveoli ? bronchioli ? trachea ? bronchus C Alveoli ? bronchioli ? bronchus ? trachea D Bronchus ? bronchioli ? trachea ? alveoli

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Life Sciences/P1

4 NSC

QUESTIONS 1.1.5 and 1.1.6 refer to the flow chart below.

O2 and glucose

X

Y

CO2 and water

DoE/November 2006

1.1.5 1.1.6

Which process is represented by X and Y respectively?

X

Y

A Respiration

Photosynthesis

B Photosynthesis Respiration

C Transpiration

Photosynthesis

D Photosynthesis Transpiration

Radiant energy is...

A not involved in these processes. B needed by both X and Y. C needed by Y and released by X. D needed by X only.

(6 x 2) (12)

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Life Sciences/P1

5 NSC

DoE/November 2006

1.2

Give the correct biological term for each of the following descriptions. Write

only the term next to the question number (1.2.1 - 1.2.8).

1.2.1 The fluid matrix found in the chloroplast

1.2.2

Tubes that are part of the extensive system of membranes found throughout the cytoplasm

1.2.3 The platform on which a slide is placed in the microscope

1.2.4

The structure in a microscope which controls the amount of light passing through a slide

1.2.5 A group of similar cells with the same origin and function

1.2.6 The membrane that covers the surface of the lungs

1.2.7 The light-trapping pigment found in the leaves

1.2.8 The process by which carbon dioxide moves out of the stomata in a

leaf

(8 x 1) (8)

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