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a) A – medulla; B – Cortex;
b) Cortex;
Kavungya answered the question on June 17, 2019 at 06:08
- State two processes through which plants excrete their metabolic wastes.(Solved)
State two processes through which plants excrete their metabolic wastes.
Date posted: June 17, 2019. Answers (1)
- The table below shows the approximate percentage concentration of various components in blood
plasma entering the kidney, glomerular filtrate and urine of a healthy human being
(a)...(Solved)
The table below shows the approximate percentage concentration of various components in blood
plasma entering the kidney, glomerular filtrate and urine of a healthy human being
(a) Name the process responsible for the formation of glomerular filtrate
(b) What process is responsible for the absence of glucose and amino acids in urine?
(c) Explain why there are no plasma proteins in the glomerular filtrate?
Date posted: June 17, 2019. Answers (1)
- The table below shows description of sizes of glomeruli renal tubules of two animals which are
living in different environments
Name the likely environment in which each...(Solved)
The table below shows description of sizes of glomeruli renal tubules of two animals which are
living in different environments
Name the likely environment in which each animal lives :
(i)Animal X
(ii) Animal Y
Date posted: June 17, 2019. Answers (1)
- What role does vasoconstriction play in thermoregulation?(Solved)
What role does vasoconstriction play in thermoregulation?
Date posted: June 17, 2019. Answers (1)
- Name the nitrogenous wastes excreted by the following organisms:-
Animal Nitrogenous Waste
(i) Desert mole
(ii)...(Solved)
Name the nitrogenous wastes excreted by the following organisms:-
Animal Nitrogenous Waste
(i) Desert mole
(ii) Marine fish
(iii) Tilapia
Date posted: June 17, 2019. Answers (1)
- What is diuresis?(Solved)
What is diuresis?
Date posted: June 17, 2019. Answers (1)
- If the human pancreas is not functional:-(i) Name the hormone which will be deficient(ii) Name the disease the human is likely to suffer from(Solved)
If the human pancreas is not functional:-
(i) Name the hormone which will be deficient
(ii) Name the disease the human is likely to suffer from
Date posted: June 17, 2019. Answers (1)
- A student mixed a sample of urine from a person with Benedict’s solution and heated, the colour
changed to orange.
(a) What was present in the urine...(Solved)
A student mixed a sample of urine from a person with Benedict’s solution and heated, the colour
changed to orange.
(a) What was present in the urine sample?
(b) What did the student conclude on the health status of the person?
(c) Which organ in the person may not be functioning properly?
Date posted: June 17, 2019. Answers (1)
- Describe how ingestion of very salty food may reduce the amount of water excreted in urine.(Solved)
Describe how ingestion of very salty food may reduce the amount of water excreted in urine.
Date posted: June 17, 2019. Answers (1)
- Name two substances that are not found in urine of a healthy person(Solved)
Name two substances that are not found in urine of a healthy person
Date posted: June 17, 2019. Answers (1)
- Explain the following:-
i) Fresh water fish excrete ammonia
ii) Glucose is absent in urine yet present in glomerular filtrate(Solved)
Explain the following:-
i) Fresh water fish excrete ammonia
ii) Glucose is absent in urine yet present in glomerular filtrate
Date posted: June 17, 2019. Answers (1)
- Explain why resistance to antibiotics is considered as an example of evolution(Solved)
Explain why resistance to antibiotics is considered as an example of evolution
Date posted: June 15, 2019. Answers (1)
- In a breeding experiment, plants with red flowers were crossed. They produced 123 plants with red flowers and 41 with white flowers:
(a) Identify the recessive...(Solved)
In a breeding experiment, plants with red flowers were crossed. They produced 123 plants with red flowers and 41 with white flowers:
(a) Identify the recessive trait
(b) Give a reason for your answer
Date posted: June 15, 2019. Answers (1)
- Explain why insecticides become ineffective against insects if used for several years in succession (Solved)
Explain why insecticides become ineffective against insects if used for several years in succession
Date posted: June 15, 2019. Answers (1)
- Briefly explain the term “survival for the fittest” as used in Darwin’s theory of natural selection(Solved)
Briefly explain the term “survival for the fittest” as used in Darwin’s theory of natural selection
Date posted: June 15, 2019. Answers (1)
- Explain why certain drugs become ineffective in curing a disease after many years of use (Solved)
Explain why certain drugs become ineffective in curing a disease after many years of use
Date posted: June 15, 2019. Answers (1)
- All insects are believed to have arisen from a common ancestor. However, modern insects differ widely in a variety of ways such as in the...(Solved)
All insects are believed to have arisen from a common ancestor. However, modern insects differ widely in a variety of ways such as in the adaptation of their mouthparts for different modes of feeding. What kind of evolution is this?
Date posted: June 15, 2019. Answers (1)
- Distinguish divergent and convergent evolution(Solved)
Distinguish divergent and convergent evolution
Date posted: June 15, 2019. Answers (1)
- Give two factors that determine water reabsorption in the distal convoluted tubule(Solved)
Give two factors that determine water reabsorption in the distal convoluted tubule
Date posted: June 15, 2019. Answers (1)
- Distinguish between the struggle for existence and survival for the fittest as used in the theory of natural selection(Solved)
Distinguish between the struggle for existence and survival for the fittest as used in the theory of natural selection
Date posted: June 15, 2019. Answers (1)