a) To increase surface area for enzymatic action.
b) Contain bacteria that produce cellulase enzyme to digest cellulose.
sharon kalunda answered the question on March 22, 2019 at 07:38
- Name the disease characterized by
i)Glycosuria
ii)Diuresis(Solved)
Name the disease characterized by
i)Glycosuria
ii)Diuresis
Date posted: March 22, 2019. Answers (1)
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State two ways in which skeletal muscles fibres are adapted to their function.
Date posted: March 22, 2019. Answers (1)
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State two measures that can be taken to control infection of man by protozoan parasites.
Date posted: March 22, 2019. Answers (1)
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- Structural difference –
- Functional difference –(Solved)
State one structural and one functional difference between motor and sensory neurones.
- Structural difference –
- Functional difference –
Date posted: March 22, 2019. Answers (1)
- State one function of each of the following parts of a mammalian ear.
a) Pinna
b) Tympanic membrane
c) Vestibule(Solved)
State one function of each of the following parts of a mammalian ear.
a) Pinna
b) Tympanic membrane
c) Vestibule
Date posted: March 22, 2019. Answers (1)
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State the changes that occur in a nerve axon to produce an action potential.
Date posted: March 22, 2019. Answers (1)
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Distinguish between identical twins and fraternal twins.
Date posted: March 22, 2019. Answers (1)
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State function of the following in seed. Germination.
i) Water
ii) Enzymes
iii) Oxygen
Date posted: March 22, 2019. Answers (1)
- List the changes that takes place during inhalation in the breathing cycle of mammal in the following.
(a) Ribcage and thoracic cavity.
(b) Diaphragm
(c) External intercostal...(Solved)
List the changes that takes place during inhalation in the breathing cycle of mammal in the following.
(a) Ribcage and thoracic cavity.
(b) Diaphragm
(c) External intercostal muscles.
(d) Internal intercostal muscles.
Date posted: March 22, 2019. Answers (1)
- Name the fins that prevent the following movements of fish during swimming.
(i) Yawing
(ii) Pitching
(iii) Rolling(Solved)
Name the fins that prevent the following movements of fish during swimming.
(i) Yawing
(ii) Pitching
(iii) Rolling
Date posted: March 22, 2019. Answers (1)
- Write the types of gene mutation represented by the following analogues.
(i) Intended message BRING THERMOS ON OUTING
Actual message BRING MOTHERS ON OUTING
Type ......................................................
(ii) Intended message...(Solved)
Write the types of gene mutation represented by the following analogues.
(i) Intended message BRING THERMOS ON OUTING
Actual message BRING MOTHERS ON OUTING
Type ......................................................
(ii) Intended message PLEASE SAY WHERE YOU ARE
Actual message PLEASE STAY WHERE YOU ARE
Type ......................................................
Date posted: March 22, 2019. Answers (1)
- Use the diagram below to answer the questions that follow.(Solved)
Use the diagram below to answer the questions that follow.
(a) Name structure labelled Y.
(b) (i) State the agent of dispersal for the structure above.
(ii) Give a reason for your answer in b(i) above.
Date posted: March 22, 2019. Answers (1)
- Name the type of response shown by:
(a) Leaves of Mimosa pudica when they fold after being touched.
(b) Sperms when they swim towards ovum.
(c) Euglena...(Solved)
Name the type of response shown by:
(a) Leaves of Mimosa pudica when they fold after being touched.
(b) Sperms when they swim towards ovum.
(c) Euglena when they swim towards the source of light.
Date posted: March 22, 2019. Answers (1)
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What happens when respiration exceeds photosynthesis in the guard cells of terrestrial plants?
Date posted: March 22, 2019. Answers (1)
- State the importance of the structure given below in a seed.
(a) Endosperm.
(b) Testa.(Solved)
State the importance of the structure given below in a seed.
(a) Endosperm.
(b) Testa.
Date posted: March 21, 2019. Answers (1)
- Two populations of the same species of birds were separated over a long period of time by an ocean. Both populations initially fed on insects...(Solved)
Two populations of the same species of birds were separated over a long period of time by an ocean. Both populations initially fed on insects only but later it was observed that one population fed entirely on fruits and seeds although insects were available. Name;
(a) The type of isolation.
(b) The type of evolutionary change.
(c) What are vestigial structures?
(d) Name one vestigial structure in man.
Date posted: March 21, 2019. Answers (1)
- Eight potato cylinder of the same size were used to investigate a certain physiological process. Four of the potato cylinders were placed in solution S....(Solved)
Eight potato cylinder of the same size were used to investigate a certain physiological process. Four of the potato cylinders were placed in solution S. The other four potato cylinders were placed in solution T. After 2 hours, the potato cylinders from solution S were found to longer and stiff, while those from solution T were found to be shorter and flexible. Explain the
results in solution S and T.
(b) Distinguish between active transport and diffusion.
Date posted: March 21, 2019. Answers (1)
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Why is the pancreas considered a dual gland?
Date posted: March 21, 2019. Answers (1)
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List two enzymes that are secreted in their precursor forms.
Date posted: March 21, 2019. Answers (1)
- The diagram below represents a type of bone in the mammalian skeleton.(Solved)
The diagram below represents a type of bone in the mammalian skeleton.
(a) Identify the bone illustrated in the diagram.
(b) Give a reason for your answer in (a) above.
Date posted: March 21, 2019. Answers (1)