The property of clayey soil that prevents it from supporting thick vegetation is its?
composition of chemically weathered granite rocks
inability to retain much water
tendency of becoming waterlogged
porosity and low water retention ability
Correct answer is B
No explanation has been provided for this answer.
Diagram J is a protease while diagrams K, L, M, and N are food substances. Study them and answer this question.
After a reaction between protease J and the food substance, the end product would be
fatty acids
glucose
amino acids
water
Correct answer is C
No explanation has been provided for this answer.
The major source of vitamin A are ?
egg yolk, carrot, and palm oil
mango, pawpaw, and eggs
sorghum, soya bean, and liver
rice, bran, green vegetables, and milk
Correct answer is A
No explanation has been provided for this answer.
An evidence of the occurrence of photosynthesis in an experiment is the?
release of carbon (IV) oxide
release of oxygen
formation of water molecules
formation and release of fructose
Correct answer is B
No explanation has been provided for this answer.
In which of the following structures is simple sugar produced?
Vacuole
Cytoplasm
Chloroplast
Cell wall
Correct answer is A
No explanation has been provided for this answer.
The diagrams below are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.
Which of the following statements about P and Q is correct?
Both cells are structures for asexual reproduction
Both cells normally belong to the same individual
Both cells are found in plants
The union of both cells gives rise to a new mammal
Correct answer is D
P - sperm cell:
III. Nucleus IV. Mitochondria
Q- Egg cell:
I. Nucleus II. Cytoplasm.
Sperm-egg fusion is a cell-cell membrane fusion event essential for the propagation of sexually reproducing organisms.
The diagrams below are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.
Which parts of P and Q fuse to complete the biological process?
III and I
IV and I
III and II
IV and II
Correct answer is A
P is a sperm cell whose nucleus (iii) then fuses with the egg plasma membrane (i) of the ovum (Q) and injects its nucleus and other organelles into the egg cytoplasm.
The diagram below is an illustration of some parts of a mammalian ear. Study it and answer this question.
Which of the parts are correctly grouped?
(Inner ear I, IV) (Middle ear III) (Outer ear II)
(Inner ear III) (Middle ear II, IV) (Outer ear I)
(Inner ear III) (Middle ear II) (Outer ear III,IV)
(Inner ear II) (Middle ear I, III) (Outer ear IV)
Correct answer is D
No explanation has been provided for this answer.
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