NEW
Font size
Worksheetshomeostasis form 6
Total questions: 20
Worksheet time: 10mins
Which of the following is a correct match?
Epiphyte – Elodea
Hydrophyte – Lemna
Mesophyte – Rhizophora
D Halophyte – Asplenium nidus
What will happen to a cell with Ψ = – 0.7 m Pa is put into a solution with Ψ = – 0.5 m Pa?
It becomes flaccid
It absorbs water.
It plasmolyses.
It loses water.
Calculate the net pressure that is forcing out the capillary. The other pressures are given as below.
Hydrostatic pressure = 45 mm Hg
Osmotic pressure = 30 mm Hg
Osmotic pressure of tissue fluid = 5 mm Hg
5 mm Hg
20 mm Hg
35 mm Hg
75 mm Hg
Insulin is secreted by
α -cells of the islets of Langerhans.
β -cells of the islets of Langerhans.
medulla of adrenal glands.
cortex of adrenal glands.
Following are synthesised in liver, except
urea
cholestrol
vitamin D
fibrinogen
Bile pigments are found because of a function in liver. Which of the following is the correct function
Detoxification of toxins
Release of stored vitamin D.
Breakdown of haemoglobin.
Deamination of amino acids.
How does liver involve in homeostasis?
I It produces bite salts.
II It performs detoxification.
III It performs gluconeogenesis.
IV It produces a high amount of heat.
III and IV
I, III and IV
II, III and IV
I, II, III and IV
Which of the following in the liver cells produce urea?
Cori cycle
Calvin cycle
Citrulline cycle
Ornithine cycle
Questions ( 9 ) to ( 11 ) are based on the diagram given. Diagram below shows an ornitine cycle
Q represents a by-product.What is Q?
O2
CO2
H2O
CH2O
P reacts with water to form urea and regenerates ornithine. What is P?
Arginine
Globulin
Cistrulline
Protrombin
R reacts with an ammonia to form another amino acid. What is R?
arginine
globulin
cistrulline
prothrombin
Which of the following statements are true about liver?
I It synthesis glucose from lactate.
II It stores glucose in the form of glycogen.
III It regulates blood glucose concentration.
IV It converts non-glucose monosaccharides
I, II and III
I, II and IV
I, II and IV
I, II, III and IV
Hydrophytes are
plants that are living in loamy soil that contains good humus and water content.
plants that live under water, floating on water or in water.
plants that are already adapted to live in dry areas.
plants living in muddy seaside.
When a person’s islet of Langerhans malfunctions,
little conversion of sugar into glycogen occurs in the liver.
no glucose concentration is found in the urine.
glycogen concentration is high in the muscle.
glycogen concentration is high in the blood.
Drug intake by someone can be detected by testing his/ her urine. Which of the process below that occurs in nephron is important for the detection of drugs in the urine?
Reabsorption
Ultrafiltration
Active secretion
Counter current multiplier
what happen when osmoreceptor in the hypothalamus detects an increase in water potential of blood?
the collecting ducts reabsorb more water from filtrate
the posterior pituitary gland release more ADH
more urea is diffused out of the filtrate
more dilute urine is produces
the section of nephron which involves in regulation of salt, water and blood pH is
loop of henle
proximal convoluted tubule
distal convoluted tubul
juxtaglomerular apparatus
what is the function of atrial natriuretic peptide hormone?
to inhibit the secretion of renin and aldosterone
to increase reabsorption of sodium ions and water by kidney tubular cells
to stimulate release of aldosterone by adrenal cortex
to convert angiotensinogen to angiotensin I
the pH of tissue fluid is regulated by
I acid-base buffer systems in the blood
II the respiratory centre in the brains
III the kidneys
I
I and II
II and III
I, II and III
Which of the following glands increases its secretion if a person does not eat or drink for one day?
I Thyroid glands
II Posterior pituitary glands
III b-cells of islet of Langerhans
IV a-cells of islet of Langerhans
I and II
I and III
I and IV
II and IV
