Entry Test Biolgy Class 11Th 12Th Chapter 02

Medical Entry Test Important MCQS

Chapter 2

1.Nucleus in plant cells was discovered by:
a. Dutrochet
b. Robert Brown
c. Robert Hooke
d. Schleiden
Correct Ans. (c)

2.The pushing out of materials by the cell against the concentration gradient is:
a. Low transport
b. Passive transport
c. Active transport
d. Moderate transport
Correct Ans. (c)

3.Robert Hooke examined thin slices of cork made up of the bark of:
a. Pine
b. Sheesham
c. Oak
d. Mulberry
Correct Ans. (c)

4.In thin slices of cork Robert Hooke noticed.
a. Tiny creatures
b. Small holes
c. Small chambers
d. Bacteria
Correct Ans. (c)

5.Henri Dutrochet confirmed.
a. Robert Brown observations on Nucleus
b. Robert Hooke’s observations on Cells
c. Schwann observations of cells
d. Schleiden observations on cells
Correct Ans. (b)

6.They provide support to the plant body:
a. Phloem cells
b. Parenchyma cells
c. Sclerenchyma cells
d. Chlorechyma cells
Correct Ans. (c)

7.Parenchyma cells are concerned with:
a. Secretion
b. Support
c. Carry Oxygen
d. Storage of surplus food
Correct Ans. (d)

8.Substances cross the cell membrane more easily when they are:
a. Water soluble
b. Protein soluble
c. Alcohol soluble
d. Lipid soluble
Correct Ans. (d)

9.Many substances that are not needed constantly enter the cell by:
a. Passive transport
b. Active transport
c. Negative transport
d. Fast transport
Correct Ans. (b)

10.It is a true cell wall in a newly growing cell:
a. Middle lamella
b. Secondary wall
c. Primary wall
d. Plasma membrane
Correct Ans. (c)

11.It is the first to be formed:
a. Primary wall
b. Secondary wall
c. Tertiary wall
d. Middle lamella
Correct Ans. (a)

12.It is a site of certain metabolic pathways:
a. Cell wall
b. Plasma membrane
c. Cytoplasm
d. A & B
Correct Ans. (c)

13.The water percentage of cytosol in the cytoplasm is:
a. 50
b. 60
c. 70
d. 90
Correct Ans. (d)

14.New Ribosomes are assembled in the :
a. Nucleolus
b. Mitochondria
c. Endoplasmic Reticulum
d. Golgi Apparatus
Correct Ans. (a)

15.Smooth Endoplasmic Reticulum helps to:
a. Synthesize proteins
b. Detoxify the harmful drugs
c. Prepare food
d. Decompose proteins
Correct Ans. (b)

16.Morphologically Endoplasmic Reticulum exists in:
a. Four forms
b. Three forms
c. Two forms
d. One form
Correct Ans. (b)

17.The 60S and 40S subunits on attachment with each other form:
a. 100S particle
b. 90S particle
c. 80S particle.
d. 70S particle
Correct Ans. (c)

18.Proteins are synthesized in the:
a. Ribosomes
b. Mitochondria
c. Nucleus
d. Nucleolus
Correct Ans. (a).

19.They are absent in higher plants:
a. Plastids
b. Golgi Apparatus
c. Cell Membranes
d. Centrioles
Correct Ans. D

20.Amino acids (proteins) are present in the cell walls of:
a. Gymnosperms
b. Bacteria
c. Mosses
d. Angiosperms
Correct Ans.

B21.Which of the following organelles is present in both prokaryotic and eukaryoticcells?
a. Chloroplast
b. Ribosomes
c. Mitochondria
d. Golgi Complex
Correct Ans. B

22.Which of the following features is not shared by prokaryotic and eukaryotic cells?
a. Ribosome
b. Cytoplasm
c. Cell membrane
d. Nuclear membrane
Correct Ans. D

23.Which of the following cell organelles is present in both plant and animal cells?
a. Chlorophyll
b. Plasma membrane
c. Plastids
d. Cell wall
Correct Ans. B

24.Which of the following pair is incorrect?
a. Ribosome ______________ Protein synthesis
b. Chloroplast _____________Photosynthesis
c. Mitochondria ____________ Fermentation
d. Plasma membrane___________ Osmosis
Correct Ans. C

25.Which of the structures is not found in a prokaryotic cell?
a. Plasma membrane
b. Nuclear envelope
c. Ribosome
d. Cell wall
Correct Ans.B

26.How may membranes comprise the nuclear envelop?a. None
b. One
c. Two
d. Three
Correct Ans. C

27. Which of the following molecules move regularly from the nucleus to thecytoplasm?
a. Glycogen b. DNA
c. RNA
d. Cholesterol
Correct Ans. C

28.Which of the following cellular organelles extracts energy from glucose andforms ATP molecules:
a. Lysosome
b. Chloroplast
c. Mitochondrion
d. Chromoplast
Correct Ans. C

29.Lysosomes contain enzymes capable of:
a. Aerobic cellular respiration
b. Digesting part of the cell
c. Synthesizing protein
d. Synthesizing lipids
Correct Ans. B

30.Mitochondria are found:
a. in all cells
b. only in plant cells
c. only in animal cells
d. in all eukaryotic cells
Correct Ans. D

31.Green pigments capable of capturing the energy of sunlight are located within the:
a. Golgi complex
b. Endoplasmic complex
c. Chloroplast
d. Cell wall
Correct Ans. C

32.The two types of cellular organelles that transform energy are:
a. Chromoplasts and leucoplast
b. Mitochondria and chloroplast
c. Mitochondria and Chromoplasts
d. Chloroplasts and leucoplasts
Correct Ans. B

33.The plastids that give fruits and flowers their orange and yellow colours are the:
a. leucoplasts
b. chloroplasts
c. Chromoplasts
d. Proplasts
Correct Ans. C

34.The main function of the plasma membrane is to:
a. synthesize ribosomes
b. Control what goes into and out of the cell
c. Allow all kinds of substances to enter the cell
d. Move the cell from place to place
Correct ans. B

35.Plant cells are connected by channels through their walls called:
a. Plasmodesmata
b. desmosomes
c. middle lamella
d. non of these
Correct ans. A

36.In the fluid mosaic membrane model the lipid bilayer:
a. is sandwiched between two protein layers
b. has protein embedded in it
c. lies on top of a single protein layer
d. is covered by a single protein layer
correct ans. B

37.An input of energy is required for which one of the following?
a. diffusion
b. osmosis
c. passive transport
d. active transport
Correct ans.D

38.Which of the following cytoplamic organelles is not bounded by membrane:
a. Mitochodrion
b. Lysosome
c. Ribosome
d. Plastids
Correct Ans. C

39.Which of the following bodies is not bounded by a double membrane structure?
a. mitochondrion
b. chloroplast
c. Lysosome
d. Nucleus
Correct Ans.C

40.Which of the following cell organelles cause a decrease in the concentration of organic material in the cell?
a. Golgi bodies b. Chloroplast
c. Ribosome
d. Mitochondrion
Correct Ans. D

41.Which of the following cell organelles is not involved in the sequence of eventsfrom synthesis of an enzyme to its excretion?
a. Ribosome
b. Lysosome
c. Golgi apparatus
d. Endoplasmic reticulum
Correct Ans. B

42.A lipid molecule in the plasma membrane has a head and two tails. The tails arefound:
a. At the surfaces of the membrane
b. In the interior of the membrane
c. Both at the surfaces and interior of the membrane
d. None of these
Correct Ans. B

43.Which of the following organelles and their contents are incorrectly paired:
a. Ribosome – RNA
b. Mitochondrion – Chlorophyll
c. Lysosome – digestive enzymes
d. Nucleus – DNA
Correct Ans. B

44.Which of the following properties is incorrect for both mitochondria andchloroplast:
a. Both have an electron transport system b. ATP synthesis
c. Both are present in all cells
d. Both are double membrane structures
Correct Ans. C

45.Which of the following cell organelles release oxygen:
a. ribosome
b. Golgi complex
c. Mitochondria
d. Chloroplast
Correct Ans. D

46.Active transport:
a. requires a protein carrier
b. moves a molecule against its concentration gradient
c. requires a supply of energy
d. all of these
Correct Ans. d

47.The nucleolus is largely composed of rRNA and
a. lipid
b. Glucose
c. Wax
d. Protein
Correct Ans. D


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