Biology for Competitive Exams

Biology for Competitive Exams
Biology Quiz Questions
biology Various MEDICAL COMPETITIVE EXAMINATIONS

1. Secretion of gastric juice is stimulated by:
(a) Pepsin
(b) Gastrin
(c) Renin
(d) Secretin
Ans. (b)
2. Which one is not correct?
(a) Humans—Ureotelic
(b) Birds—Uricotelic
(c) Lizards—Uricotelic
(d) Whale—Ammonotelic
Ans. (d)
3. Which one shows bio-luminescence?
(a) Noctiluca
(b) Polystomella
(c) Entamoeba
(d) Suctoria
Ans. (a)
4. Mantle, foot and shell are the characteristics of:
(a) Nautilus
(b) Echinus
(c) Limulus
(d) Euplectella
Ans. (a)
5. Protists are:
(i) Unicellular and prokaryote
(ii) Unicellular and eukaryote
(iii) Multicellular and eukaryote
(iv) Autotroph or heterotroph
(a) (i), (ii) and (iii)
(b) (ii), (iii) and (iv)
(c) (iii), (iv)
(d) (ii),(iv)
Ans. (d)
6. Pepsin is inactivated at pH:
(a) Below 3
(b) Below 2
(c) Above 5
(d) Above 3
Ans. (c)
7. Which one is not produced by aquaculture?
(a) Oyster
(b) Silkworm
(c) Singhara
(d) Frog
Ans. (b)
8. Progesterone is secreted by:
(a) Corpus luteum
(b) Utreus
(c) Placenta
(d) graafian follicle
Ans. (a)
9. Which one affects liver, muscle and adipose tissue?
(a) Androgen
(b) Insulin
(c) Progesterone
(d) Glucagon
Ans. (b)
10. Inner lining of blood vessels is formed by:
(a) Ciliated epithelium
(b) Squamous epithelium
(c) Cuboidal epithelium
(d) Columnar epithelium
Ans. (b)
11. Nucleated RBC is present in:
(a) Man
(b) Rat
(c) Frog
(d) Rabbit
Ans. (c)
12. Pellagra is caused by deficiency of vitamin:
(a) B1
(b) B2
(c) B5
(d) B6
Ans. (c)
13. The main excretory organ of prawn is:
(a) Green gland
(b) Flame cell
(c) Malpighian tubule
(d) Nephridia
Ans. (a)
14. Moulting hormone is secreted by:
(a) Corpora card iacum
(b) Prothoracic gland
(c) Corpora allata
(d) Neurosecretory hormone
Ans. (b)
15. Deoxyribonucleic and ribonucleic are secreted by:
(a) Liver
(b) Stonth
(c) Pancreas
(d) Kidney
Ans. (c)
16. Haemodialysis helps in patient having:
(a) Uremia
(b) Anemia
(c) Diabetes
(d) Goiter
Ans. (a)
17. X-rays are used in:
(a) ECG
(b) EEG
(c) CT-scan
(d) Endoscopy
Ans. (c)
18. Disease caused by deficiency of protein in children is
(a) Obesity
(b) Marasmus
(c) Diabetes
(d) Kwashiorkor
Ans. (d)
19. The thin filaments of a muscle fiber are made up of:
(a) Actin, troponin, tropomyosin
(b) Actin, troponin
(c) Myosin, troponin
(d) Actin, tropomyosin
Ans. (a)
20. The species, which is going to become extinct due to lack of proper care would be called:
(a) Rare
(b) Endangered
(c) Vulnerable
(d) Extinct
Ans. (b)
21. In which part of mitochondria does ATP synthesis occur?
(a) F₁
(b) F₀
(c) Cristae
(d) Inner membrane of mitochondria
Ans. (a)
22. Abnormal growth of the tumour in cancer is due to:
(a) Abnormal mitotic division
(b) Accumulation of body fluid
(c) Abnormal meiotic division
(d) Metastasis
Ans. (a)
23. Fat, prior to its oxidation associate with:
(a) Cyclic AMP
(b) Co-A
(c) GMP
(d) ATP
Ans. (b)
24. Schwann cell is found around:
(a) Axon
(b) Cyton
(c) Dendrite
(d) Dendron
Ans. (a)
25. Which part of retina consists of only cones?
(a) Fovea centralis
(b) Optic nerve
(c) Blind spot
(d) Orasmata
Ans. (a)