MULTIPLE CHOICE QUESTIONS

PRACTICE Sample questions

. Photosynthetic pigments found in the chloroplasts occur in
a) Chloroplast envelope b) Matrix
c) Plastoglobules d) Thylakoid membranes
2. Which of the following pigments acts as a reaction-centre during
photosynthesis?
a) Cytochrome b) P700
c) Carotene d) Phytochrome
3. In photosynthesis, energy from light reaction to dark reaction is transferred in the
form of
a) Chlorophyll b) ATP c) ADP d) RuDP
4. In photosystem I, the first electron acceptor is
a) Plastocyanin b) Cytochrome
c) Ferredoxin d) An iron-sulphur protein
5. In the leaves of C4 plants malic acid formation during carbon dioxide fixation
occurs in the cells of
a) Mesophyll b) Epidermis
c) Phloem d) None of these
6. Stroma in the chloroplasts of higher plants contains
a) Light-independent reaction enzymes
b) Ribosomes c) Chlorophyll
d) Light-dependant reaction enzymes
7.Alpha-ketoglutarate dehydrogenase results in a Oxidation and Decarboxylation b
Reduction
c. Oxidation d. None of the above
8. _________ is a product of aerobic respiration
a. Malic acid b. Pyruvate c.Ethylene d.Lactose
9. Energy gained during aerobic respiration is _______ times more than
anaerobic respiration.
a. 8 b. 12 c.19 d.32
10. Glycolysis is also known as ________
a. EMP pathway b. TCA pathway
C. carbon sequestration d.None of the above
11. On oxidation of 1 molecule of glucose, ______ ATP is produced through aerobic
respiration
a. 10 b. 25 c. 30 d.38
12. Coconut milk contains a cytokinin called ____ which promotes plant growth.
a. Naphthalene acetic acid
b.Indole-3-acetic acid c.Gelatin d.Zeatin
13. One of the following is not an auxin
a.Indole-3-acetic acid b. Malic Hydrazide
c. Indole butyric acid d.Naphthalene acetic acid
14 _________can stimulate the germination of barley seeds
a. α-amylase b. Abscisic acid
c. Benzoic acid d. Coumarin
15. Seed dormancy is triggered by
a. Indole-3-ethanol b. Abscisic acid
c. Carbon dioxide d. None of the above
16 The significance of the day length in plants was first shown in:
a. Barley b. Lettuce c. Tobacco d.Tomato
17 Respiration in mature mammalian erythrocytes are __________
a. Linear b.Absent c. Anaerobic d.Aerobic
18__________ is not a characteristic feature of the respiratory surface.
a. Dry b. Thin c. Permeable d. Moist
19.Human skin cannot function as a respiratory organ because
a. It is not permeable to O2 and CO2
b. It is rather thick c.It is dry d. All of the above
20 In cockroaches, inspiration occurs with ......
a.Relaxation of tergo-sternal muscles
b. Relaxation of abdominal muscle
c. Neither (1) nor (2) d.Both (1) and (2)
21.Pick out the statement that is wrong with respect to insects
a. Abdominal muscles do not take part in respiration
b. When abdominal muscles relax, the air is drawn in through spiracles and
tracheoles
C. Contracting abdominal muscles drive the air out through the spiracles
d. Both (2) and (3)
22. Where does the exchange of gases occur in birds?
a. Air sacs only b. Air sacs and Lungs c. Lungs only d.First in air sacs and then in the
lungs
23 Spiracles in cockroaches are analogous to _______ in humans
a. Trachea b. Nostrils
c. Lungs d.None of the above
24. Where are the conchae located?
a. Auricle b. Brachioles c. Nasal Chambers d. Ville
25. Laryngeal prominence is also known as ___
a. Adam’s Apple b.Epiglottis
c.Thyroids d.Laryngitis
26. Glottis opens on the floor of
a. Pharyngeal cavity b. Diagraphram
c. Trachea d. None of the above
27. The normal diastolic blood pressure in a normal healthy adult human is
a.80 mm Hg b.60 mmHg c.90 mm Hg d.110 mm Hg
28 ______ is a blood disorder where the haemoglobin is defective
a. Heterochromia b. Alopecia
c. Haemolysis d. Sickle cell anaemia
29. Which of the following two-word items mean the same thing?
a. Blood cancer – Haemophilia
b. Pacemaker – S A Node
c. Osteoporosis – arthritis d. None of the above
30 In adult humans, _______ of lead or less in the blood is considered to be
normal.
a. 40µg/dL b. 20µg/dL c. 10µg/dL d. 50µg/dL
31. In humans, ____________ is the difference between systolic and diastolic
pressure.
a. 40 mm Hg b. 20 mm Hg
c. 10 mm Hg d. None of the above
32. An individual’s blood is classified as _________ if an inherited protein is found
on the surface of the blood cells.
a. ANA-Positive b. Rh-Neutral
c. Rh-Negative d. Rh-Positive
33. ______ is considered as the basic functional unit of the human kidney
a. Exon b. Nephron c. Cilia d. Neuron
34. The Krebs-Henseleit cycle is a sequence of biochemical reactions that take
place in .....
A Brain b. Liver c. Urinary bladder d. Lungs
35. Bowman capsule is located in ______
a. Cortex b. Henle’s loop
c. Bladder d.None of the above
36. The __________ is the point where two or three major renal calyces join
together.
a.Renal pelvis b. Urethra
c. Bowman’s capsule d. None of the above
37. _________ are tubes made up of smooth muscle fibres that transport urine to
the bladder from the kidneys
a.Renal Papilla b. Urethra
c. Ureters d.None of the above
38. Nitrogenous wastes excreted through urine in humans is
a. Trimethylamine oxide b. Ammonia
c. Uric Acid d. Urea
39. The __________ secretes a fluid that cushions and lubricates the joints
a. Cutaneous membrane b. Synovial membrane c. Mucous membrane d. None of
the above
40. Which of the following is accurate?
a. Humans have 2 pairs of false floating ribs
b. Humans have 1 pair of false floating ribs
c. Humans have 3 pairs of false floating ribs
d. Humans have 7 pairs of false floating ribs
41 _______________ is an example of an imperfect joint
a. Ball & socket joint b. Pubic symphysis
c. Elbow joint d. None of the above
42.The ______ is the largest sesamoid bone in the human body
a. Pelvic b. Femur c. Ulna d. Patella
43. The _______ is the only movable part of the skull.
a. Nasal Conchae b. Mandible c. Vomer d.Maxilla
44._______ is the muscle’s contractile protein.
a. Globulin b. Elastin c. Myosin d None of above
45. One of the functions of the Neuroglial cells is to protect and support
_________
a.Nephrons b. Myoid cells c. Neuron d. NOA
46. The abundant inhibitory neurotransmitter found in the CNS is ________
a Gamma-glutamyltransferase
b. Gamma-linolenic acid
c. Gamma-Aminobutyric acid
d. None of the above
47. There are ____ laminae present in the spinal cord’s grey matter
a. 2 b. 4 c. 6 d. 10
48. The thalamus and the hypothalamus are located in the _________
a Brain stem b. Cerebrum
c. Cerebellum d Diencephalon
49. One of the actions of the parasympathetic nervous system is
a. Inhibits peristalsis b. Constriction of Pupils
c. Dilates Bronchioles d. Sweat secretion
50. The gap in the myelin sheath between adjacent Schwann cells is called ____
a. Soma b. Dendrite
c. The node of Ranvier d. None of these
51.______ controls the concentration of urine
a. ADH b. Oxytocin c. ACTH d.None of the above
52.Children who have damaged thymus may result in..........
a. Loss of an antibody-mediated immunity
b. Reduction in stem cell production
c. Deafness d. Loss of cell-mediated immunity.
53.A group of hormones called __________ are released due cortex
a. Glucose b. Glucocorticoid c.Glucagon d.NOA
54.Adrenocorticotropic hormones stimulate the adrenal cortex to produce
_________
a.Testosterone b. Aldosterone c Cortisol d NOA
55. Deficiency of this element causes the thyroid gland to swell up.
a.Calcium b. Iodine c. Phosphorous d. NOA
56 ______ are synthetic steroid hormones that resembles testosterone
a.Aldosterone b. Anabolic Steroids
c. Both (1) and (2) d. None of the above