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SUPERVISOR'S USE ONLY
NEW ZEALAND QUALI FICATIONS AUTHORITY
MANA TOHU MATAUR.ANGA 0 AOTEAR.OA
Level 2 Biology, 2013
91156 Demonstrate understanding of life processes
at the cellular level
9.30am Friday 22 November 2013
Credits: Four
Achievement
Demonstrate understanding of life
processes at the cellular level.
Achievement with Merit
Demonstrate in-depth understanding of
life processes at the cellular level.
Achievement with Excellence
Demonstrate comprehensive
understanding of life processes at the
cellular level.
Check that the National Student Number (NSN) on your admission slip is the same as the number at the
top of this page.
You should attempt ALL the questions in this booklet.
If you need more space for any answer, use the page(s) provided at the back of this booklet and clearly
number the question.
Check that this booklet has pages 2-12 in the correct order and that none of these pages is blank.
YOU MUST HAND THIS BOOKLET TO THE SUPERVISOR AT THE END OF THE EXAMINATION.
Low
Achieved
TOTAL
9
ASSESSOR' S USE ONLY
©New Zealand Qualifications Authority, 2013. All rights reserved.
No part of this publication may be reproduced by any means without the prior permission of the New Zealand Qualifications Authority.
I
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You are advised to spend 60 minutes answering the questions in this booklet.
QUESTION ONE: RESPIRATION
Although aerobic respiration is an essential cell process in both plants and animals, the location and
function of the cell in an organism influences the rate at which respiration. takes place. Cells that
carry out different levels of respiration are usually found to have different amounts of the organelle
in which aerobic respiration occurs.
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describe th~ purpose of aerobic respiration
•
describe what is required for aerobic respiration to occur, and name the prddill:ts ofth~ .
process
•
name the orweg!: where aerobic respiration takes place, and relateits structure to its function
•
giv~ons
. .
for the differences in amounts of this organelle, supported byaiiliD.imumof
~uS~~ examples.
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QUESTION TWO: PHOTOSYNTHESIS
The rate of photosynthesis is directly related to the availability of light. Normally, an increase in
light intensity also leads to an increase in temperature. However, if the temperature gets too high,
the rate of photosynthesis may decrease or even stop completely. Experiments have shown that if
light is kept constant but temperature is varied independently, then the rate of photosynthesis can
still be seen to change.
(a)
With reference to the structure and function of enzymes, and the conditions that they are best
suited to, explain why the rate ofphotosynthesis varies with changes in temperature.
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The leafis made up of several different types of cells. Their shape, size, and chloroplast
concentration are related to their function.
For copyright reasons, this resource
cannot be reproduced here.
Adapted from V. Slaughter, Living Things (London: Hodder & Stoughton, 1980), p 30.
With reference to the diagram above, discuss how the location and structure of cells AND
organelles in a plant leaf can maximise the rate of photosynthesis.
In your answer.
•
describe the different types of cells found ill a typical leaf
•
descnoe the structure of the organelle where photosynthesis is carried out
•
explain how the structures you have described allow the functions to be carried out
•
relate the structure and function of the cells and organelles to the rate of photosynthesis.
You may draw a diagram(s) in the box provided to support your answer.
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QUESTION THREE: CELL DMSION
Mitosis occurs during the life cycles of both animals and plants.
(a)
Describe what is meant by mitosis.
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The process of DNA replication is usually referred to as semi-conservative replication.
(b)
Explain the process of how chromosomes are replicated, and why the process is known as
semi-conservative replication.
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diagram(s) in the box provided to support your answer.
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Almost all animals and plants develop from a fertilised cell that divides into different types of
cells and tissues. The rates of mitosis vary considerably, depending on the location of the cells
and the stage in the organism's life-cycle.
(c)
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In your answer include:
•
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reasous why the stages ~fan organism's life-cycle have different rates of mitosis
/
at least two examples, with reasons, of the parts of plants and animals where the rate of
mitosis is likely to be higher.
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SUPERVISOR'S USE ONLY
NEW ZEALAND QUALIFICATIONS AUTHORITY
MANA TOHU MATAURANGA 0 AOTEAROA
Level 2 Biology, 2013
91156 Demonstrate understanding of life processes
at the cellular level
9.30am Friday 22 November 2013
Credits: Fou r
Achievement
Demonstrate understanding of life
processes at the cellular level.
Achievement with Merit
Demonstrate in-depth understanding of
life processes at the cellular level.
Achievement with Excellence
Demonstrate comprehensive
understanding of life processes at the
cellular level.
Check that the National Student Number (NSN) on your admission slip is the same as the number at the
top of this page.
You should attempt ALL the questions in this booklet.
If you need more space for any answer, use the page(s) provided at the back of this booklet and clearly
number the question.
Check that this booklet has pages 2-12 in the correct order and that none of these pages is blank.
YOU MUST HAND THIS BOOKLET TO THE SUPERVISOR AT THE END OF THE EXAMINATION.
High
Achieved
TOTAL
12
ASSESSOR'S USE ONLY
© New Zealand Qualifications Authority, 2013. All rights reserved.
No part of this publication may be reproduced by any means without the prior permission of the New Zealand Qualifications Authority.
\!!2>'<>
·'~013\
\c-' /
You are advised to spend 60 minutes answering the questions in this booklet.
'
QUESTION ONE: RESPIRATION
Although aerobic respiration is an essential cell process in both plants and animals, the location and
function of the cell in an organism influences the rate at which respiration takes place. Cells that
carry out different levels of respiration are usually found to have different amounts of the organelle
in which aerobic respiration occurs.
6)
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Discuss the process of aerobic respiration.
12
In your answer:
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../.
describe what is required for aerobic respiration to occur, and name the products of the
process
name the organelle where aerobic respiration takes place, and relate its structure to its function
.;•
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give reasons for the differences in amounts of this organelle, supported by a minimum of
TWO justified examples.
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The rate of photosynthesis is directly related to the availability of light Normally, an increase in
light intensity also leads to an increase in temperature. However, if the temperature gets too high,
the rate of photosynthesis may decrease or even stop completely. Experiments have shown that if
light is kept constant but temperature is varied independently, then the rate of photl)synthesis can
still be seen to change.
(a)
With reference to the structure and function of enzymes, and the conditions that they are best
suited to, explain why the rate of photosynthesis varies with changes in temperature.
,
and are
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Adapted from V. Slaughter, Living Things (London: Hodder & Stoughton, 1980), p 30.
With reference to the diagram above, discuss how the location and structure of cells AND
organelles in a plant leaf can maximise the rate of photosynthesis~
In your answer:
•
describe the different types of cells found in a typical leaf
•
describe the structure of the organelle where photosynthesis is carried out
•
explain how the structures you have described allow the functions to be carried out
•
relate the structure and function of the cells and organelles to the rate of photosynthesis.
answer.
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Mitosis occurs during the life cycles of both animals and plants.
(a)
Describe what is meant by mitosis.
The process of DNA replication is usually referred to as semi-conservative replication.
(b)
Explain the process of how chromosomes are replicated, and why the process is known as
semi-conservative replication.
You may draw a labelled diagram(s) in the box provided to support your answer.
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