biology cet

8/7/2019 Biology CET

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Biology

what is comman for cyclic and noncyclic

photophosphorylation?

a) vRelease of o2

b) Formation of NADPH2c) Photolysis of water

d) Formation of ATP

2. In case of c4 pathway in the first step

--------------a) co2 combines with PGA

b)CO2 combines with PEP

c)CO2 combines with RuDPd)CO2combines with RMP

3. During photosynthesis when PGA is

changed to PGAL,it is ----------------a)Reduction b)Photolysisc)Hydrolysis d)Oxidation

4. Tropical plants like sugarcane show

high efficiency of CO2 fixation becauseof -----

a)Calvin cycle b)EMP pathway

c)HSK pathway d)TCA cycle5. ------ is the first event of

photosynthesis.

a)Reduction of CO2

b)Production of NADPH2c)Photolysis of water

d)Photoexcitation of chlorophyll

6. Formation of Acetyl CoA from pyruvicacid is the result of its ------

a)Oxidation b)Reduction

c)Phosphorylation d)Oxidativedearboxylation

7. . Enzymes taking part in EMP pathway

are present in -------

a)Mitochondria b)Cytoplasm

c)Both aand b d)vacuole8. Phosphoglyceraldehyde and dihydroxy

acetone phosphate are -------a)Monomers b)polymers

c)Enantiomers d)Isomers

9. In anaerobic respiration -------molecules are formed .

a)4ATP b)8 ATP c)2ATP d)12ATP

10. End products of electron transport

chain are ----a)CO2 and ADP b)CO2 and ATP

c)H2O and ATP d)GTP

11. which of the following is least

effective in photosynthesis a)sunlight b)blue light

c)Red light d)Green llight12. Wall of mitochondria is made up of

---------

a)Lipids b)fats

c)Lipids and proteins d)proteins13. Oxidation of reduced coenzymes

(NADH2 and FADH2) take place in

------a)Glycolysis b)Acylation

c)Krebs cycle d)ETS14. An organic acid which undergoes bothdehydrogenation and decarboxylation

during Krebs cycle is -------

a)-ketoglutaric acid b)succinic acid

c)Fumaric acid d)Malic acid15. Terminal electron acceptor in ETS is

O2 . It acceps electron from ------

a)cyta b)cytc c)cyta3 d)cytb16. ATP formation during photosynthesis is

known as ---------

a)oxidative phosphorylationb) photophosphorylation

d)Dephosphorylation

d)substrate level phosphorylation

17. chl-a is called a reaction centre because

------

a)It converts light energy into chemicalenergy

b)It absorbs light energy

c)It is present in the centre ofphotosystem

d)none of these

18. If 48 molecules of PGAL are formedduring C3 cycle, how much them of are

converted into glucose and RuDP

respectively?

a)10&38 b)12& 36 c)8&40 d)1&42


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19. During photosynthesis the oxygen in

glucose comes from ----a)water b)oxygen in air

c)CO2 d)None of these

20. which one is a C4 plant ?

a)potato b)Sugarcane c)Pea d)Papaya21. Photosynthesis is -----------

a)Anabolic process b) catabolic processc)Exothermic d)Endothermic

22. Light reaction of photosynthesis occur

in ----------

a)stroma b)ER c)cytoplasm d)grana23. In cyclic photophosphorylation which

one of the following is formed?

a)NADP&ATP b)ATPc)NADPH2 d)NADPH2 &ATP

24. common intermediate source of energyin cellular activity is ----a)ATP b)NAD c)RNA d)DNA

25. In ETC ,ATP is not formed in which of

the following

a)cyta-cyta3 b)cytb-cytcc)cytc-yta d)NADH2-FAD

26. The cleavage having incomplete

division of egg is known as ------a)Spiral b)Meridonial

c)Meroblastic d)Holoblastic

27. How many eggs will be formed from100 primary ooocytes?

a)300 b)200 c)400 d)100

28. Which of the following animal ishaving longitudinal binary fission?

a)Euglena b)Plasmodium

c)PLanaria d)Paramecium

29. In which part of the spermatozoamitochondria are formed?

a)Neck b)Head c)Tail d)Middle piece

30. Brain ,ear and cornea develop from-----a)Ectoderm b)Ecto-mesoderm

c)Mesoderm d)Endoderm

31. In mammals, placenta is formedbya)Yolk sac b)chlorio allantois

c)Chorion d)Ammmion

32. Goitre is due to deficiency of ----

a)Thyroxine b)Iacinc)ADH d)Adrenalin

33. Growthharmone somatostatin is

secreted bya)Anterior pituitary b)Kidneys

c)Liver d)Adrenal cortex

34. FSH and LH harmones together are

calleda)Emergency b)Gonadotropic

c)euroharmones d)outstress harmones35. Inadequate production of STH in early

life leads to

a)Gigantism b)Dwarfism

c)Acromegaly d)Cretinism36. Corpus leteum secretes

a)estrogen b)Progesterone

c)LH d)FSH37. Harmones reach the target organs

through---a)Ducts b)Bloodc)Ducts of Bellini d)convoluted tubules

38. Target of ICSH is --

a)Ovary b)Sertoli cells

c)Leydig cells d)spermatogonial cells39. BMR is controlled by

a)ADH b)Thyroxine c)GH d)ACTH

40. Acromegaly is due to secretion of ----a)Increased STH

b)Decreased thyrotropin

c)Decreased STHd)Increased thyrotropin

41. Ovulation in female is under control of

a)LH b)ADH and LH

c)FSH and LH d)LTH and TSH

42. Relaxin is released from ----

a)Pitutary b)Ovaryc)Adrenal d)Placenta

43. Calcitonin is thyroid harmone which

a)elevates potassium level in bloodb)lowers calcium level in blood

c)elevates calcium level in blood

d) Has no effect on calcium44. Spermatogenesis in males is induced

by----

a)FSH b)LH c)ADH d)ACTH


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45. Diabetes insipidus is under the control

of ----a)Aldosterone b)ADH

c)ACTH d)TSH

46. Seminiferous tubules develop central

lumen after ---a)Old age b)Birth

c)Menarche d)Puberty47. Fusion of male and female nuclei

during fertilization is called ---

a)Synkaryon b)Amphimixis

c)Synkaryosis d)Segmentation48. Human egg is ---

a)Microlecithal b)Alecithal

c)Mesolecithal d)Centrolecithal49. Nervous system is derived from ----

a)Endoderm b)Mesodermc)Ectoderm d)None50. The cavity present in graafian follicle

is---

a)Amniotic cavity b)Antrum

c)Archenteron d)Distal sac

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