-
What are some of the rules followed in constructing a dichotomous key?
Date posted:
March 22, 2018
-
What are some of the similarities of the Aves and the Pisces?
Date posted:
March 22, 2018
-
Explain the adaptation of the kidney to its functions.
Date posted:
March 15, 2018
-
a) State the function for co-factors in cell metabolism
b) Give one example of a metallic co -factor
Date posted:
March 5, 2018
-
Trace the path followed by a molecule of glucose from the time of absorption to a cell in the brain.
Date posted:
February 28, 2018
-
Trace the pathway through which nitrogen gas in the atmosphere is eventually incorporated in the tissues of a carnivore.
Date posted:
February 26, 2018
-
(a) State three processes by which flowering plants excrete waste products and for each process name two waste products that are eliminated.
(b) Describe the functions of the various components of the mammalian blood.
Date posted:
February 23, 2018
-
(a) Describe the photosynthetic theory of opening and closing of the stomata.
(b) Describe the regulation of blood sugar level in man.
Date posted:
February 23, 2018
-
Describe the uptake and movement of water from the soil to the leaves of a tall plant till transpiration
Date posted:
February 23, 2018
-
Name the organelle that:-
a) Manufacture and transport lipids and steroids in a cell.
b) Contain enzymes that are capable of destroying old damaged cells.
c) Control all the processes in a cell.
d) Form cilia and flagella in cells that have them.
Date posted:
February 19, 2018
-
(a) Name two divisions in the kingdom Plantae that show alternation of generation
(b)Name the phylum whose member possesses a notochord.
Date posted:
February 19, 2018
-
A patient was given a drug which caused afferent arteriole entering the glomerulus to dilate while efferent arteriole constricted. Explain the effect the drug had to the amount of urine produced.
Date posted:
February 19, 2018
-
How is the rate of diffusion affected by:
(i) Temperature
(ii) Concentration…
(iii) Surface area to volume ratio
Date posted:
February 19, 2018
-
(a)State the reason why scientific names are given in Latin.
(b) The length of a beetle is 2cm, when the beetle is magnified using a hand lens the length of the drawing is 6 cm workout the magnification.
Date posted:
February 19, 2018
-
How would you test that someone is a victim of diabetes mellitus in the laboratory?
Date posted:
February 15, 2018
-
A boy curved initials of his name in the bark of young tree at a height of 2 meters above the ground. Three years later the initials were found at the same height, although the tree had grown two metres taller. Explain the observations.
Date posted:
February 15, 2018
-
Name one factor in nature that increases the process of evolution
Date posted:
February 15, 2018
-
In view of modern genetics, explain why Lamarck’s theory is unacceptable
Date posted:
February 15, 2018
-
Explain why a pregnant woman excretes less urea compared to a woman who is non- pregnant.
Date posted:
February 15, 2018
-
Name two fins in a bony fish which perform the following functions:-
i) Changing direction.
ii) Control pitching.
Date posted:
February 15, 2018
-
Explain why blood is not normally used for transfusion after one month
Date posted:
February 15, 2018
-
State the major factor in the ‘Global warming’ experienced in the world today
Date posted:
February 14, 2018
-
What is meant by the following biological terms?
i) Crenation
ii) Haemolysis
iii) Plasmolysis
Date posted:
February 14, 2018
-
Identify three immunizable diseases in Kenya
Date posted:
February 14, 2018
-
Name structures in herbaceous stems that enhance their support.
Date posted:
February 14, 2018
-
Explain the likely effect on humans and other organisms of untreated sewage discharged into water body that supplies water for domestic use.
Date posted:
February 14, 2018
-
Differentiate between continuous and discontinuous variation.
Date posted:
February 12, 2018
-
Explain how the guard cells are adapted to their functions.
Date posted:
February 12, 2018
-
State two structural adaptations of veins to their function.
Date posted:
February 10, 2018
-
Explain the various conditions necessary for germination
Date posted:
February 8, 2018