KNEC KCSE BIOLOGY TOPICAL QUESTIONS - ATIKA SCHOOL

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State three structural differences between biceps muscles of the gut.

14/6/2020

K.C.S.E Biology Q & A - MODEL 1997PP1QN07

State three structural differences between biceps muscles of the gut.

ANSWERS

K.C.S.E Biology Q & A - MODEL 1997PP1QN06

14/6/2020

K.C.S.E Biology Q & A - MODEL 1997PP1QN06

Oil can be applied on the stagnant water to control the spread of malaria.
(a) How does this practice control the spread of malaria?
(b) Give a reason why this practice should be discouraged

ANSWERS

(a) Mosquito larvae/ Pupae are killed; Accept suffocation/ Breaking life cycle of Mosquitoes
(b) Pollution of environment/ oil expensive, other aquatic are killed; accept Contamination.

In an accident a victim suffered brain injury. Consequently he had loss of memory. Which part of the brain was damaged?

14/6/2020

K.C.S.E Biology Q & A - MODEL 1997PP1QN05

In an accident a victim suffered brain injury. Consequently he had loss of memory. Which part of the brain was damaged?

ANSWERS

Cerebrum cerebral hemisphere/ cerebral cortex;

State two ways in which xylem vessels are adapted to their function

14/6/2020

K.C.S.E Biology Q & A - MODEL 1997PP1QN04

State two ways in which xylem vessels are adapted to their function

ANSWERS

Lignified thickened to prevent collapsing (Acc. Strengthened add strength)
Narrow to facilitate capillary:

What are the three end products of anaerobic respiration in plants

14/6/2020

K.C.S.E Biology Q & A - MODEL 1997PP1QN03

What are the three end products of anaerobic respiration in plants

ANSWERS

Alcohol, carbon dioxide and energy;
accept Ethanol, C2H5OH/CH3H2OH.

K.C.S.E Biology Q & A - MODEL 1997PP1QN02

14/6/2020

K.C.S.E Biology Q & A - MODEL 1997PP1QN02

A student caught an animal which had the following characteristics:

Body divide into two parts
Simple eyes
Eight legs
The animal belong to the class

ANSWERS

The animal belongs to the class – Arachnida;

State the functions of the following cell organelles

14/6/2020

K.C.S.E Biology Q & A - MODEL 1997PP1QN01.

State the functions of the following cell organelles

(a) Golgi apparatus
(b) Ribosomes

ANSWERS

(a) Golgi apparatus

Packaging of synthesized materials; Accept correctly named materials e.g glycoproteins

(b) Ribosomes

Transport of the packed materials, secretion of packed materials;
Manufacture synthesis of proteins.

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