(a) Prolactin – Stimulates milk secretion by mammary glands
(b) Oxytocin - Causes contraction of uterus at birth
- Causes expulsion of milk from mammary glands
sharon kalunda answered the question on May 28, 2019 at 06:06
- A student in form 3 caught an organism which had the following characteristics.
(i) Body divided into two parts
(ii) Simple eyes
(iii) Eight legs
Classify the organism up...(Solved)
A student in form 3 caught an organism which had the following characteristics.
(i) Body divided into two parts
(ii) Simple eyes
(iii) Eight legs
Classify the organism up to the class level
Date posted: May 28, 2019. Answers (1)
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(a) Name the process
(b) State the economic importance of the process named in...(Solved)
A process that occurs in plants is represented by the equation below.
(a) Name the process
(b) State the economic importance of the process named in (a) above
Date posted: May 28, 2019. Answers (1)
- Explain each of the following:
(a) A mature plant cell does not lose its shape even after losing water
(b) Xylem vessels do not collapse even when...(Solved)
Explain each of the following:
(a) A mature plant cell does not lose its shape even after losing water
(b) Xylem vessels do not collapse even when they are not conducting water
Date posted: May 28, 2019. Answers (1)
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(ii) Give reasons for your answer in (i) above(Solved)
(i)Identify the mode of feeding of the animal whose dental formula is shown below
(ii) Give reasons for your answer in (i) above
Date posted: May 28, 2019. Answers (1)
- The diagram below represents a cell as seen under an electron microscope.
a) Identify the parts labeled A and D.
b) State the function of the...(Solved)
The diagram below represents a cell as seen under an electron microscope.
a) Identify the parts labeled A and D.
b) State the function of the structures found on the part labeled D.
Date posted: May 28, 2019. Answers (1)
- An experiment was carried out to investigate transpiration and absorption of water in sunflower plants in their natural environment with adequate supply of water. The...(Solved)
An experiment was carried out to investigate transpiration and absorption of water in sunflower plants in their natural environment with adequate supply of water. The amount of water was determined in two hour intervals. The results are shown in the table below.
(a) Using the same axes, plot graphs to show transpiration and absorption of water in grammes against time of the day.
(b) At what time of the day was the amount of water the same for transpiration and absorption.
(c) Account for the shape of the graph of
(i) Transpiration
(ii) Absorption
(d) What would happen to transpiration and absorption of water if the experiment was continued till 0050 hours.
(e) Name two factors that may affect transpiration and absorption at any given time.
(f) Explain how the factors you named in (e) above affect transpiration.
Date posted: May 28, 2019. Answers (1)
- The diagram below represents a blood smear on a glass slide.
(i) State the importance of structure C being large numbers in the blood smear.
(ii)...(Solved)
The diagram below represents a blood smear on a glass slide.
(i) State the importance of structure C being large numbers in the blood smear.
(ii) Give a reason why structure C would be found in large numbers in high altitude than in low altitude.
(iii) Name the process by which structure A would engulf structure B.
Date posted: May 28, 2019. Answers (1)
- A portion of a nucleic acid is shown below;
a) Name the nucleic acid to which the portion belongs. Give a reason.
b) Write down the...(Solved)
A portion of a nucleic acid is shown below;
a) Name the nucleic acid to which the portion belongs. Give a reason.
b) Write down the sequence of bases of a complimentary strand to the one above.
Date posted: May 28, 2019. Answers (1)
- Name two renal diseases.(Solved)
Name two renal diseases.
Date posted: May 27, 2019. Answers (1)
- Below is a section through a mammalian organ.
(a) Identify the section.
(b) Name the parts labeled A, B and C
(c) State three functions of...(Solved)
Below is a section through a mammalian organ.
(a) Identify the section.
(b) Name the parts labeled A, B and C
(c) State three functions of the photographed specimen.
Date posted: May 27, 2019. Answers (1)
- The diagram below illustrate an experiment to demonstrate some aspects of respiration in a potted plant.
(a) Name and state the role of the chemical compound...(Solved)
The diagram below illustrate an experiment to demonstrate some aspects of respiration in a potted plant.
(a) Name and state the role of the chemical compound labeled A
Chemical compound
Role played
(b) What aspect of respiration is being demonstrated?
(c) Name the reagents in set up B and D.
(d) What would be the results in set up B and D after the experiment has run for some time.
Set up B
Set up D
(e) State the importance of covering the bell jar in set up C with a black polythene bag.
(f) Why was it necessary to enclose the pot with a polythene bag.
Date posted: May 27, 2019. Answers (1)
- The diagram below shows the bones and muscles of a human leg when seated.
(a) Name the bones E and F
(b) Muscles in the leg...(Solved)
The diagram below shows the bones and muscles of a human leg when seated.
(a) Name the bones E and F
(b) Muscles in the leg work antagonistically to muscle A
(i) What is meant by antagonistic?
(ii) State two structural difference between muscle A and muscle found in the esophagus.
(c) (i) Name the type of joint formed by the articulation of bones E, F and G
(ii) State one difference between the joint named in C (ii) and the one which bone E make at the proximal end.
(d) State the function of the substance found in part labeled H.
Date posted: May 27, 2019. Answers (1)
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Explain why it is difficult for scientist to make a vaccine against plasmodium which causes malaria.
Date posted: May 27, 2019. Answers (1)
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Name the hormone involved in development of male secondary sexual characteristics.
Date posted: May 27, 2019. Answers (1)
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Name the hormone involved in Milk production
Date posted: May 27, 2019. Answers (1)
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State two adaptations of the oviduct in female reproductive system.
Date posted: May 27, 2019. Answers (1)
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Cardiac muscles are myogenic while skeletal muscles are neurogenic.Explain
Date posted: May 27, 2019. Answers (1)
- Study the food web below and answer the questions below
(a) Name the organism occupying the highest trophic level
(b) Construct two food chains with wild...(Solved)
Study the food web below and answer the questions below
(a) Name the organism occupying the highest trophic level
(b) Construct two food chains with wild dog as secondary consumer.
Date posted: May 27, 2019. Answers (1)
- The diagram below shows type of vertebrae fused to form a rigid structure.
(a) What is the name of the rigid structure?
(b) What is the...(Solved)
The diagram below shows type of vertebrae fused to form a rigid structure.
(a) What is the name of the rigid structure?
(b) What is the importance of the rigid structure in human beings?
Date posted: May 27, 2019. Answers (1)
- Explain why cell membrane is semi-permeable.(Solved)
Explain why cell membrane is semi-permeable.
Date posted: May 27, 2019. Answers (1)