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Parasites mutate/develop new strains; that produce enzymes/antitoxins that degradethe drugs making the parasites non-susceptible to drugs
chrispohmomanyi answered the question on February 15, 2018 at 06:43
- (a)Name the parts of the human skeleton which make appendicular skeleton
(b) State the importance of intervertebral discs
(Solved)
(a)Name the parts of the human skeleton which make appendicular skeleton
(b) State the importance of intervertebral discs
Date posted: February 15, 2018. Answers (1)
- Explain three characteristics which make buccal cavity of a frog suitable for gaseous exchange (Solved)
Explain three characteristics which make buccal cavity of a frog suitable for gaseous exchange
Date posted: February 15, 2018. Answers (1)
- Suggest three ways by which the human body naturally prevents entry of harmful micro-organisms into the body tissues
(Solved)
Suggest three ways by which the human body naturally prevents entry of harmful micro-organisms into the body tissues
Date posted: February 15, 2018. Answers (1)
- Describe the environmental impact caused by eutrophication (Solved)
Describe the environmental impact caused by eutrophication
Date posted: February 15, 2018. Answers (1)
- State the functions of the following laboratory equipment in ecological study
(a)Pooter
(b) Forceps
(c) Sweep nets
(Solved)
State the functions of the following laboratory equipment in ecological study
(a)Pooter
(b) Forceps
(c) Sweep nets
Date posted: February 15, 2018. Answers (1)
- What determines whether a human zygote develops into a boy or a girl?(Solved)
What determines whether a human zygote develops into a boy or a girl?
Date posted: February 15, 2018. Answers (1)
- Name the causal organism of (a) Gonorrhea (b) Trichomoniasis(Solved)
Name the causal organism of
(a) Gonorrhea
(b) Trichomoniasis
Date posted: February 15, 2018. Answers (1)
- Distinguish between a true fruit and a false fruit (Solved)
Distinguish between a true fruit and a false fruit
Date posted: February 15, 2018. Answers (1)
- Distinguish between predation and parasitism(Solved)
Distinguish between predation and parasitism
Date posted: February 15, 2018. Answers (1)
- State three secondary sexual characteristics that occur in girls(Solved)
State three secondary sexual characteristics that occur in girls
Date posted: February 15, 2018. Answers (1)
- A group of students selected two growing potted plants and treated them as follows
Plant A – leaves left intact
Plant B – all leaves...(Solved)
A group of students selected two growing potted plants and treated them as follows
Plant A – leaves left intact
Plant B – all leaves removed
The two plants were then enclosed with transparent polythene bags and left for two hours in the sun
(a) What was the aim of the experiment
(b) (i) State the results in the two set ups after two hours
(ii) Account for the results in plant A
Date posted: February 15, 2018. Answers (1)
- Energy flow in an ecosystem proceeds in a way that the amount of energy decreases in successive trophic levels. State why;
(a) It is more advisable...(Solved)
Energy flow in an ecosystem proceeds in a way that the amount of energy decreases in successive trophic levels. State why;
(a) It is more advisable for a person to feed on carbohydrates rather than on proteins
(b) Man does not feed on grass although it contains a lot of energy
Date posted: February 15, 2018. Answers (1)
- State two disadvantages of seed dormancy(Solved)
State two disadvantages of seed dormancy
Date posted: February 15, 2018. Answers (1)
- Name one factor in nature that increases the process of evolution(Solved)
Name one factor in nature that increases the process of evolution
Date posted: February 15, 2018. Answers (1)
- In view of modern genetics, explain why Lamarck’s theory is unacceptable(Solved)
In view of modern genetics, explain why Lamarck’s theory is unacceptable
Date posted: February 15, 2018. Answers (1)
- Outline the main features of Lamarckian theory of evolution.(Solved)
Outline the main features of Lamarckian theory of evolution.
Date posted: February 15, 2018. Answers (1)
- Explain what happens in humans when the concentration of glucose in the blood rises above the normal level.
(Solved)
Explain what happens in humans when the concentration of glucose in the blood rises above the normal level.
Date posted: February 15, 2018. Answers (1)
- Explain why a pregnant woman excretes less urea compared to a woman who is non- pregnant. (Solved)
Explain why a pregnant woman excretes less urea compared to a woman who is non- pregnant.
Date posted: February 15, 2018. Answers (1)
- Name two fins in a bony fish which perform the following functions:-
i) Changing direction. ...(Solved)
Name two fins in a bony fish which perform the following functions:-
i) Changing direction.
ii) Control pitching.
Date posted: February 15, 2018. Answers (1)
- Explain why blood is not normally used for transfusion after one month(Solved)
Explain why blood is not normally used for transfusion after one month
Date posted: February 15, 2018. Answers (1)