SECTION A
QUESTION 1
1.1 Answer the following multiple-choice questions by choosing the most appropriate
answer. Write down only the letter of your choice. Example 1.1.6 A
1.1.1 Most of the carbon dioxide in the blood is transported…
A as oxyhaemoglobin.
B as carbhaemoglobin.
C in solution in the plasma.
D as bicarbonate ions.
1.1.2 A symbiotic relation in which both organisms’ benefits is known as…
A mutualism.
B commensalism.
C parasitism.
D none of the above.
1.1.3 Which of the following homeostatic functions of the kidney will be affected by
damage to the hypothalamus of the brain?
A Salt regulation
B Excretion
C Osmoregulation
D pH
1.1.4 A hockey field had an area of 3000m2. Ten quadrats were randomly placed on the
hockey field. Each quadrat had an area of 0.25m2. The total number of weeds
counted in the all quadrats were 600. The estimated total population of weeds
within the hockey field is:
A 720 000
B 7 200 000
C 72 000
D 7 200
Page 1 of 10
© 2023 Tutorme LS. All rights reserved.
, 1.1.5 If the pH of blood becomes too low, which substances will the cells of the renal
tubule extract from the blood and pass into the tubular fluid to rectify the
imbalance?
A Potassium ions
B Hydrogen ions
C Carbonate ions
D Bicarbonate ions
(5 x 2) (10)
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 to 1.2.4) in your ANSWER BOOK.
1.2.1 Specialised cells lining the inner wall of the Bowman’s capsule.
1.2.2 Collection of alveoli.
1.2.3 Group of organisms of the same species that occupy the same habitat at a
particular time and produce viable offspring
1.2.4 Cartilaginous structure that contains vocal cords
(4 x 1) (4)
1.3 Indicate whether each of the statements in COLUMN I 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 1.3.3) in the ANSWER BOOK
COLUMN I COLUMN II
1.3.1 Breathing muscles A Diaphragm
B Intercostal muscles
1.3.2 Waste product excreted by the skin, lungs and A Water
kidneys B Urea
1.3.3 Maximum number of individuals in a A Limiting factor
population that can be supported by the B Carrying capacity
environment
(3 x 2) (6)
SECTION A TOTAL: 20
Page 2 of 10
© 2023 Tutorme LS. All rights reserved.
QUESTION 1
1.1 Answer the following multiple-choice questions by choosing the most appropriate
answer. Write down only the letter of your choice. Example 1.1.6 A
1.1.1 Most of the carbon dioxide in the blood is transported…
A as oxyhaemoglobin.
B as carbhaemoglobin.
C in solution in the plasma.
D as bicarbonate ions.
1.1.2 A symbiotic relation in which both organisms’ benefits is known as…
A mutualism.
B commensalism.
C parasitism.
D none of the above.
1.1.3 Which of the following homeostatic functions of the kidney will be affected by
damage to the hypothalamus of the brain?
A Salt regulation
B Excretion
C Osmoregulation
D pH
1.1.4 A hockey field had an area of 3000m2. Ten quadrats were randomly placed on the
hockey field. Each quadrat had an area of 0.25m2. The total number of weeds
counted in the all quadrats were 600. The estimated total population of weeds
within the hockey field is:
A 720 000
B 7 200 000
C 72 000
D 7 200
Page 1 of 10
© 2023 Tutorme LS. All rights reserved.
, 1.1.5 If the pH of blood becomes too low, which substances will the cells of the renal
tubule extract from the blood and pass into the tubular fluid to rectify the
imbalance?
A Potassium ions
B Hydrogen ions
C Carbonate ions
D Bicarbonate ions
(5 x 2) (10)
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 to 1.2.4) in your ANSWER BOOK.
1.2.1 Specialised cells lining the inner wall of the Bowman’s capsule.
1.2.2 Collection of alveoli.
1.2.3 Group of organisms of the same species that occupy the same habitat at a
particular time and produce viable offspring
1.2.4 Cartilaginous structure that contains vocal cords
(4 x 1) (4)
1.3 Indicate whether each of the statements in COLUMN I 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 1.3.3) in the ANSWER BOOK
COLUMN I COLUMN II
1.3.1 Breathing muscles A Diaphragm
B Intercostal muscles
1.3.2 Waste product excreted by the skin, lungs and A Water
kidneys B Urea
1.3.3 Maximum number of individuals in a A Limiting factor
population that can be supported by the B Carrying capacity
environment
(3 x 2) (6)
SECTION A TOTAL: 20
Page 2 of 10
© 2023 Tutorme LS. All rights reserved.
