Question

(2)

25. Which cell organelle is not bound by any membrane?

a) endoplasmic reticulum b) Ribosome

c) Mitochondria d) Chloroplast

26. In 1831, Robert Brown described

a) Nucleus b) Cell

c) Nucleolus d) Dictyosome

27. Nucleolus is the site for synthesis of

a) t-RNA b) DNA

c) Ribosome d) m-RNA

28. Histones are

a) Acidic proteins b) Basic proteins

c) Mucoproteins d) Glycoproteins

29. Ribosomes were discovered by

a) Golgi b) Porter

c) De Roberties d) Palade

30. Which one of the following is not a plastid?

a) Chloroplast b) Micoplast

c) Chromoplast d) Leucoplast

31. In an animal cell, protein synthesis takes place

a) On ribosomes present in the nucleolus as well as in

cytoplasm

b) On ribosomes present in the cytosol as well as in

the mitochondria

c) Only on the ribosomes proteins in the cytosol

d) ONly on the ribosomes attached to nuclear envelope

and endoplasmic reticulum

32. Cristae occur in

a) Golgi body b) Nucleus

c) Mitochondria d) E.R.

33. Lipid molecules of plasma membrane are arranged

a) Alternately b) In series

c) Parallel d) Scattered

34. Sphaerosomes contain

a) cellulose reserve b) Protein reserve

c) Lipid reserve d) Both protein and lipid

35. Which of the cell organelles stores hydrolytic enzymes?

a) Lysosome b) Chloroplast

c) Chromoplast d) Centriole

36. Which of the following is responsible for the origin of

lysome?

a) Mitochondria b) Golgi body

c) Ribosome d) Chloroplast

37. Which one of the following structures between two

adjacent cells is an effective transport pathway?

a) Plastoquinones b) Endoplasmic reticulum

c) Plasmalenmma d) Plasmodesmata

38. Site of gluconeogenesis is

a) Glyoxysomes b) Golgi bodies

c) Mitochondria d) None of these

39. Most abundant lipid in a cell membrane is

a) Sphingolipid b) Glycolipid

c) Phospholipid d) All of these

40. Cell organelles are embedded in

a) Cytoplasmic reticulum b) Protoplasm

c) Cytoplasm d) None of the above

41. The vacuoles of plant cells are bound by a single

semipermeable membrane called

a) Cristae b) Tonoplast

c) Thylakoids d) Plasmalemma

42. Term plasmalemma was given by

a) Straburger b) Plowe

c) Robertson d) Hooke

43. Ingestion of solid or liquid substances into the cell is

referred to as ............

a) Diffusion b) Exocytosis

c) Endocytosis d) Osmosis

44. Mitochondria do not occur in

a) Human liver cell b) Human nerve cell

c) Human erythrocyte d) Frog liver cell

45. An elaborate network of filamentous proteinaceous

structures present in the cytoplasm which helps in the

maintains of cell shape is called

a) Plasmalemma b) Cytoskeleton

c) Endoplasmic reticulumd) Thylakoid

46. Main function of mitochondria in a cell is

a) Secretion b) Excretion

c) Osmoregulation d) Respiration

47. Important site for formation of glycoproteins and

glycolipids is

a) Plastid b) Lysosome

c) Vacuole d) Golgi apparatus

48. Semi-atutonomous organelle is

a) E.R. b) Lysosome

c) Peroxisome d) Chloroplast

49. Chloroplasts fix

a) N2

b) H2

c) O2

d) CO2

50. A certain road accident patient with unknown blood

group needs immediate blood transfusion. The blood

group of the donor should be

a) B b) AB

c) O d) A​

Answer 1

Answer: 25 option b

26 option a

27 option d

28 option b

29 option d

30 option b

31 option d ( i'm not sure)

32 option a

33 option c (not sure)

34 option c

35  option a

36 option b

37 option  d

38 option a (not sure)

39  option  b (not sure)

40 option c

41 option b

42 option b

43 option c

44 option c

45 option b

46 option d

47 option d

48 option d

49 option d

50 option c

Explanation:

Answer 2

Answer:

25)endoplasmic reticulum