The glomerular filtrate contains the following substances except?
water
urea
blood corpuscles
glucose
Correct answer is C
Glomerular filtration is the first step in making urine. It is the process that your kidneys use to filter excess fluid and waste products out of the blood.
Glomerular filtrate contains a lot of water, but also important molecules like glucose, amino acids, salts and excretory material, urea.
In cold conditions the mammalian body reacts in the following ways except
shivering of the body
dilation of the capillaries supplying blood to the skin
constriction of blood capillaries in the skin
increased rate of chaemical changes in the body
Correct answer is B
No explanation has been provided for this answer.
Which organ removes the largest quantity of water from the blood?
lung
intestine
kidney
skin
Correct answer is C
No explanation has been provided for this answer.
Lamarck's evolution theory could be summarised by the statement that
only the fittest can survive in a challenging environment
species that are unable to adapt become extinct
new characteristics do not arise in organisms in time of need
the changing environment imposes structural physiological and behavioural changes in organisms
in a changing and unstable environment nature rejects the weak
Correct answer is D
No explanation has been provided for this answer.
The swarming especially at the beginning of the rainy season is a courtship behaviour shown by
migratory birds
pigeons
crickets
winged termites
bees
Correct answer is D
No explanation has been provided for this answer.