m.sc. entrance class chapter objective test 02

7/27/2019 M.sc. Entrance Class Chapter Objective Test 02

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M.Sc. entrance class Chapter Test: 01 Cell and its Organelles (Part – 01) Full Marks: 100

All questions are compulsory and carry equal marks

1. Which of the following is not a characteristic of prokaryotes?

A) DNA

B) cell membrane

C) cell wall

D) endoplasmic reticulum

2. Oxidative metabolism is carried out ____ of mitochondria.

A) in the intermembrane space

B) on the surface of the inner membrane

C) in the inside of the outer membrane

D) in the matrix

3. Ribosomes are made up of ____subunits.

A) 0 (They are whole.)

B) 2

C) 3

D) 4

4. Majorly Proteins synthesized by the rough ER are

i. for internal storage

ii. to be inserted into membranes of the cell

iii. to digest food in lysosomes

iv. internal regulatory enzymes

v. to be exported from the cell

A) i and ii

B) ii and v

C) i, ii, iv and vD) only ii

5. In bacteria, some of the functions of eukaryotic cells are performed by

A) vesicles

B) mitochondria

C) nucleoli

D) the plasma membrane

6. Glycoproteins and glycolipids assembled in Golgi bodies are packaged for distribution in

A) cisternae

B) lysosomes

C) peroxisomes

D) liposomes

7. The rough ER is so named because it has an abundance of _______________ on it.

A) mitochondria

B) Golgi bodies

C) ribosomes

D) vesicles

8. Clusters of rRNA where ribosomes are assembled are called

A) NOR

B) cisternae

C) nucleoli

D) centrioles

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9. Which of these is NOT part of the endomembrane system of the cell?

A) mitochondria

B) endoplasmic reticulum

C) lysosomes

D) Golgi complex

E) vesicles

10. The smooth ER is especially abundant in cells that synthesize extensive amounts of

A) toxins

B) proteins

C) enzymes

D) lipids

11. Enzymes embedded in the membrane of the smooth ER

A) synthesize lipids

B) may be used for detoxification

C) synthesize carbohydrates

D) all of the above

12. Which of the following organelles is found in plant cells but not in animal cells?

A) endoplasmic reticulum

B) mitochondria

C) peroxisomes

D) None of the above

13. Most cells are very small. A typical eukaryotic cell, both plant and animal will occur in which of thefollowing size ranges?

A) 1 mm to 100 µm

B) 100 µm to 10 µm

C) 10 µm to 1 µm

D) 1 µm to 100 nm

14. A cell that measures 200 µm in diameter compared to a cell that measures 20µm will have 100 times the

surface area but 1000 times the volume.

A) True

B) False

15. Because they have several pigments for energy production, Algal cells lack mitochondria.

A) True

B) False

16. Proteins lacking a signal peptide sequence will probably be secreted out from the cell.

A) True

B) False

17. Ribosomes are found

A) only in the nucleus

B) in the cytoplasm

C) only in eukaryotic cells

D) both b and c

18. The Golgi apparatus is involved in

A) transporting proteins that are to be released from the cell

B) packaging proteins into vesicles

C) producing lysosomes

D) all of the above19. All the following sites has ribosomes except

A) nucleus

B) mitochondrion

C) chloroplast

D) cytoplasm

20. Ribosomes are present in

A) Eukaryotes only

B) Eukaryotes and prokaryotes

C) Prokaryotes only



D) Eukaryotes, prokaryotes and viruses

21. In 70S ribosomes, ‘S’ stands for

A) SI unit

B) Solubility factor

C) Svedberg unit

D) all of these

22. 80 S ribosomes occur in

A) Eukaryotic cells of animals

B) Eukaryotic cells of animals and plants

C) Both Eukaryotic cells and prokaryotic cells

D) all of these

23. The subunits of 80S ribosome include

A) 40S and 50S

B) 30S and 50S

C) 40S and 60S

D) 20S and 60S

24. Which of the following ions are required for binding of ribosomal subunits

A) Na+

B) Mg++

C) Mn++

D) Fe++

25. 70S ribosome occur inA) viruses

B) prokaryotes

C) prokaryotes and eukaryotic plant cells

D) All of these

26. The larger and smaller subunit of 70S ribosome is

A) 50S and 40S

B) 30S and 40S

C) 40S and 20S

D) None

27. Ribosomes are made up of

A) RNA only

B) RNA and proteins

C) RNA, DNA and proteins

D) Nucleic acids, proteins and lipids

28. Polysomes are

A) multiple units of ribosomes

B) attachment of many ribosomes to a common mRNA

C) attachment of many mRNA to a common ribosomes

D) lysosomal aggregations

29. Chloramphenicol inhibits

A) bacterial ribosomes

B) plant ribosomes

C) both a and b

D) animal ribosomes

30. Protein synthesis by eukaryotic ribosomes is inhibited byA) Chloramphenicol

B) cycloheximide

C) Penicillin

D) Cinchonine

31. Which of the following statements are true

A) Ribosomes are self-replicating organelles

B) Ribosomes are double membrane bound organelles

C) Ribosomal components are coded by DNA

D) Ribosomes are deoxyribo-nucleoproteins



32. Which of the following are involved with the movement or transport of materials or organelles

throughout the cell?

A) endoplasmic reticulum

B) cellwall

C) plasma membrane

D) all of the choices are true

33. Which of the following statements are incorrect regarding ER?

A) The adipose tissue has both SER and RER

B) Plasma cells has RER only

C) RBC lacks both RER and SER

D) Hepatocytes has both RER and SER

34. The term ‘endoplasmic reticulum’ was coined by

A) Reinert

B) Porter

C) Pomaret

D) Johnson

35. In RER, ribosomes are located on

A) the cytoplasmic side

B) on the luminal side

C) both a and b

D) all through out

36. SER is involved inA) Phospholipid biosynthesis and detoxification reaction

B) Phospholipid biosynthesis and protein synthesis

C) Protein synthesis

D) Phospholipid biosynthesis

37. SER in the retinal cells are called as

A) Sarcoplasmic reticulum

B) Retinal reticulam

C) Myeloid bodies

D) Amyloid bodies

38. The functions of RER include

A) Protein synthesis and detoxification

B) Protein synthesis and post translational modification

C) Protein synthesis and phospholipid biosynthesis

D) All of these

39. Which of the following statements are true regarding endoplasmic reticulum

A) ER provides structural framework to the cell

B) ER acts as an intracellular transporting system

C) SER is involved in synthesis of lipids

D) All of these

40. The transport of secretory proteins takes place trough organelles in the order

A) RER->SER->golgi-> secretory vescicles

B) SER->RER->golgi-> secretory vescicles

C) RER->SER-> secretory vescicles -> golgi

D) RER->golgi->SER-> secretory vescicles

41. Golgi apparatus is absent inA) higher plants

B) yeast

C) bacteria and blue green algae

D) none

42. Function of Golgi apparatus (GA) in animal cells include

A) sorting and packaging

B) exocytosis of melanin granules

C) exocytosis of thyroxine hormone

D) all of these



43. Which of the following stain is used to visualize mitochondrion

A) Janus green

B) Acetocarmine

C) Haematoxylin

D) Orange G

44. The springtail is a very common small insect that lives in rotten logs, rich soil, and other humid places. Its

cuticle is water repelling (hydrophobic) except for a strange organ, the collophore, on its ventral side.

Because it lacks the excretory organs of other insects, the springtail has this organ in contact with the

water (it is responsible for ion balance and secretion of wastes). If we examined the cell structure of this

collophore, we would expect to find a high number of

A) nuclei.

B) ribosomes.

C) Golgi bodies.

D) lysosomes.

45. Which is NOT a characteristic of mitochondria?

A) Mitochondria are the site of cellular respiration.

B) Mitochondria are found in prokaryotic and eukaryotic cells.

C) Mitochondria contain DNA and ribosomes.

D) The inner space of the mitochondrion contains a fluid matrix.

46. Which of the following is the histochemical marker for mitochondrial inner membrane

A) monoamine oxidase

B) cytochrome oxidaseC) malate dehydogenase

D) adenylate kinase

47. Oxysomes of F0-F1 particles occur on

A) Matrix

B) Mitochondrial surface

C) mitochondrial intermembranous surface

D) mitochondrial Cristae

48. Which of the following conditions does NOT apply to facilitated transport?

A) carrier proteins bind to molecules irreversibly

B) transports molecules down the concentration gradient

C) transports molecules from one side of the membrane to the other side

D) transports molecules through the membrane much faster than simple diffusion

49. Of the following, which is NOT associated with the mitochondria?

A) cristae

B) stroma

C) matrix

D) All of these are associated with the mitochondria

50. Which of the following processes uses a carrier protein and ATP?

A) osmosis

B) facilitated diffusion

C) active transport

D) endocytosis

m.sc. entrance class chapter objective test 02

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