Question 2
(a) Name four structures of a typical animal cell. [4marks]
(b) Mention four observable inherited features in humans. [4marks]
Observation
This question was attempted by many candidates and their performance was good.
In part (a) they did well in it, but some candidates missed the spellings and some named structures of unicellular e.g contractile vacuole, instead of a typical animal cell. In part (b) majority of the candidates were able to mention observable inherited features in humans.
The expected answers are as follows:
2(a) STRUCTURES OF A TYPICAL ANIMAL CELL
- cell membrane
- golgi body/apparatus
- cytoplasm
- mitochrondrion
- vacuole
- glycogen granules
- ribosomes
- lysosomes
- nuclear membrane
- endoplasmic reticulum
- nucleus
(b) OBSERVABLE INHERITED FEATURES IN HUMANS
- skin colour
- dimples/baldness/hairline shape/tongue rolling
- height/tallness/shortness/dwarfism
- lefthandedness/righthandedness
- character/behaviour
- curly/straight hair
- shape/size of the body
- shape of body structure/named
- intelligence quotient
- imbecility/moron/mental retardation
- obvious diseases/named
- albinism
- colour blindness