Download Closing of the heart valves

Human Biology
MCQ
Unit 2
1.Which of these events produces the
normal sounds of heart beat heard
through a stethoscope?
A.
B.
C.
D.
Contraction of the atria
Contraction of the ventricles
Closing of the heart valves
Opening of the heart valves
2. Which of the following is not a
function of the lymphatic system?
A. It returns excess tissue fluid to the
blood
B. It transports fat from the small
intestine
C. It destroys bacteria
D. It causes the clotting of blood at
wounds
3. Where is bile active?
A.
B.
C.
D.
Liver
Stomach
Gall bladder
Small intestine
4. Which of the following pairs of
compounds is produced by the pancreas?
A.
B.
C.
D.
Glycogen and insulin
Insulin and ADH
Insulin and glucagon
Glycogen and glucagon
5.The concentration of urea in plasma is 0.2
g/100cm3, and in urine it is 1.26 g/100cm3.
By how many times has the urea been
concentrated by the activity of the kidney?
A.
B.
C.
D.
0.252 times
1.28 times
6.3 times
63 times
6. Which of the following hormones is
released by the pituitary gland?
A.
B.
C.
D.
Insulin
Adrenaline
Oestrogen
Antidiuretic hormone
7. Infants are more likely to suffer from
hypothermia because they have
A. A low surface area to volume ratio
B. A high surface area to volume
ratio
C. A low metabolic rate
D. A high metabolic rate
8. After a race an athlete breathes at a
rate of 24 breaths per minute, with a
tidal volume of 1litre, and 5% CO2 in his
exhaled air.
What would be the volume of CO2 breathed out
during the first two minutes after the race?
A. 0.18 litres
B. 0.36 litres
C. 1.2 litres
D. 2.4 litres
9. Which hormone stimulates the
production of testosterone by the testes?
A. Follicle stimulating hormone
(FSH)
B. Luteinising hormone (LH)
C. Oestrogen
D. Progesterone
10. Which hormone is produced by the
corpus luteum?
A. Follicle stimulating hormone (FSH)
B. Luteinising hormone (LH)
C. Oestrogen
D. Progesterone
- trick question….
11.Which of the following will not
normally pass through the placenta
between the mother and the fetus?
A.
B.
C.
D.
Oxygen
Minerals
Glucose
Red blood cells
12. Fertility drugs can be used to:
A.
B.
C.
D.
Correct hormone imbalances
Reduce the pH of the oviduct
Stimulate mitosis in an egg
Protect sperm cells in the oviduct
13. If ventricular systole last for 0.4 sec,
and atrial systole lasts for 0.2 sec, what
is the heart rate of the individual?
A.
B.
C.
D.
60 bpm
72 bpm
100 bpm
120 bpm
14. In which of these locations are red
blood cells destroyed?
A.
B.
C.
D.
Liver and lymph nodes
Liver and spleen
Bone marrow and duodenum
Spleen and duodenum
15. Which of the following body fluids
does not contain digestive enzymes?
A.
B.
C.
D.
Saliva
Gastric juice
Pancreatic juice
Bile
16. Which of the following would an
increase in ADH bring about?
A. An increase in the permeability of the
kidney tubules to water
B. An decrease in the permeability of the
kidney tubules to water
C. An increase in the permeability of the
glomerulus to water
D. An decrease in the permeability of the
glomerulus to water
17. The function of the interstitial cells in
the human testes is to:
A. Act as a store for sperm cells
B. Produce sperm
C. Cause sperm cells to mature
D. Produce testosterone
18. Which of the following are
exchanged between maternal and fetal
blood by diffusion?
A.
B.
C.
D.
Oxygen and proteins
Carbon dioxide and antibodies
Oxygen and glucose
Carbon dioxide and oxygen
19. A person produces 1.5 litres of
urine in 24 hours. The urine contains
36g of urea. What is the concentration
of urea in the urine?
A. 1.0 g / 100 cm3
B. 2.4 g / litre
C. 2.4 g / 100 cm3
D. 3.6 g / 100 cm3
20. The function of the seminal vesicles
is to:
A. Produce nutrients for
sperm
B. Allow sperm to mature
C. Store sperm temporarily
D. Produce testosterone