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Match column-I and column-II and select the correct answer
Column-IColumn-II
A. Bacteria without wallsI. Lysosome
B. Small circular DNAII. Mycoplasma cells
C. Flattened sacs inIII. Thylakoid a chloroplast
D. A vesicle in whichIV. Plasmid hydrolytic enzymes are stored

A. A III; B IV; C II; D I

B. A II; B IV; C III; D I

C. A I; B II; C III; D IV

D. A IV; B III; C I ; D II

Correct Answer :

B. A II; B IV; C III; D I


Mycoplasma cells are bacteria without walls. Plasmid is a genetic structure in a cell that can replicate independently of the chromosomes. It is typically a small circular DNA strand in the cytoplasm of a bacterium or protozoan are saclike membranes that make up grana in a chloroplast. Lysosomes are a single membrane bound vesicular structure. It contains many hydrolytic enzymes and commonly called as suicidal bag of the cells. It is involved in intracellular and extracellular digestion.

Related Questions

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Centrifugation of a cell results in the rupture of the cell membrane and the contents compacting into a pellets in the bottom of the centrifuge tube. Bathing this pellet with a glucose solution yields metabolic activity including the production of ATP. One of the contents of this pellet is most likely which of the following?

A. Cytosol

B. Mitochondria

C. Lysosomes

D. Golgi bodies

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4

Which of the following statements are correct ?
  1. In prokaryotic cells, a special membranous structure formed by the extension of the plasma membrane into the cell is known as polysome.
  2. The smooth endoplasmic reticulum is the major site for synthesis of glycoproteins.
  3. RuBisCO is the most abundant protein in the whole biosphere.
  4. Mitochondria, chloroplasts and peroxisomes are not considered as part of endomembrane system. Of the above statements

A. (iii) and (iv)

B. (i) and (ii)

C. (ii) and (iii)

D. (i) and (iv)

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Cell sap is a

A. living content of cytoplasm.

B. nonliving content of cytoplasm.

C. nonliving content of vacuole.

D. living content of vacuole.

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Centrioles and centrosomes occur in the cells of

A. green plants

B. animals

C. bacteria and cyanobacteria

D. both (b) and (c)

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4

According to widely accepted fluid mosaic model cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements is incorrect?

A. Proteins in cell membranes can travel within the lipid bilayer.

B. Proteins can also undergo flip-flop movements in the lipid bilayer.

C. Proteins can remain confined within certain domains of the membrane.

D. Many proteins remain completely embedded within the lipid bilayer.

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4

Select the incorrect statement about prokaryotic ribosomes.

A. 50S and 30S subunits unite to form 70S ribosomes.

B. Polysome/polyribosome consists of many ribosomes only.

C. Ribosome is the site of protein synthesis.

D. Polysome indicate the synthesis of identical poolypeptide in multiple copies.

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4

Microtubules, motor proteins, and actin filaments are all part of the

A. mechanism of photosynthesis that occurs in chloroplasts.

B. rough ER in prokaryotic cells.

C. cytoskeleton of eukaryotic cells.

D. process that moves small molecules across cell membranes.

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4

The best way to identify a cell as either prokaryotic or eukaryotic is to determine whether

A. it came from a single-celled or multicellular organism.

B. it has a nucleus.

C. it has a plasma membrane.

D. it has cytosol.

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4

Given below are some characters of a cell organelle identify the correct organelle which shows all the characters described above.
  1. It is a membrane bound space found in the cytoplasm.
  2. It is bound by a single membrane called tonoplast.
  3. It contains water, sap, excretory products and other materials not useful to the cell.
  4. It has higher concentration of sap than the cytoplasm.

A. Golgi apparatus

B. Lysosomes

C. Endoplasmic reticulum

D. Vacuoles

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4

Choose the wrong statements regarding bacterial cell
  1. Glycocalyx is the outermost envelope in bacteria.
  2. The glycocalyx could be a loose sheath called capsule.
  3. The glycocalyx may be thick and tough called slime layer.
  4. A special structure formed by the plasma membrane is called mesosome.
  5. Small bristle like fibres sprouting out of the cell are called fimbriae.

A. (i) and (iii)

B. (i) and (ii)

C. (ii) and (iii)

D. (i) and (iv)

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The cytoskeleton is a proteinaceous network of fibres in the cytoplasm. It is involved in

A. mechanical support.

B. motility.

C. maintenace of cell-shape.

D. all of the above

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4

Match column-I and column-II and select the correct answer
Column-IColumn-II
A. Bacteria without wallsI. Lysosome
B. Small circular DNAII. Mycoplasma cells
C. Flattened sacs inIII. Thylakoid a chloroplast
D. A vesicle in whichIV. Plasmid hydrolytic enzymes are stored

A. A III; B IV; C II; D I

B. A II; B IV; C III; D I

C. A I; B II; C III; D IV

D. A IV; B III; C I ; D II

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4

The figure below shows the structure of a mitochondrion with its four parts labelled (A), (B), (C) and (D).

Select the part correctly matched with its function.

A. Part (D): Outer membrane Gives rise to inner membrane by splitting.

B. Part (B): Inner membrane Forms infoldings called cristae.

C. Part (C): Cristae Possess single circular DNA molecule and ribosomes.

D. Part (A): Matrix Major site for respiratory chain enzymes.

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4

Identify the components labelled A, B, C and D in the given section of cilia/flagella showing different parts. Choose the option which shows the correct labelling of parts.

A. A Plasma membrane, B Interdoublet bridge, C Central microtubule, D Radial spoke

B. A Plasma membrane, B Arm, C Central microtubule, D Radial spoke

C. A Plasma membrane, B Interdoublet bridge, C Hub, D Radial spoke

D. A Plasma membrane, B Interdoublet bridge, C Hub, D Arm

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8.A student was given cell samples (A and B) to identify parts which are highlighted. He observed the samples under the microscope and list down the function of the part of cell sample. The information collected by the student is listed in the table below, on the basis of which the student infers that the samples contain the organelles.
Sample ASample B
Make energy available for cellular metabolismGenerates ATP and synthes izes s ugar
Absent in cell that carry oxygen throughout the bodyPresent in plant cell
Called the energy currency of cellSource o f all the food energy

Identify the part highlighted in the sample A and B and explain why they were called as semi-autonomous organelles?

A. Sample A - Mitochondria, Sample B - Chloroplast; because both the organelles are double membrane bound structure.

B. Sample A- Mitochondria, Sample B - Chloroplast; because they both are capable of synthesis of their own proteins only.

C. Sample A - Mitochondria, Sample B - Chloroplast; because they are capable of synthesis of their own proteins and contain their own DNA.

D. Sample A- Mitochondria, Sample B - Chloroplast; because they contain their own DNA to transfer the genetic information from one generation to another.

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4

Prokaryotic and eukaryotic flagella differ in the

A. type of movement and placement.

B. location and mode of functioning.

C. microtubular structure and function.

D. microtubular organization and type of movement.

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Which one of the following pairs is not correctly matched?

A. Cristae The tubular structure formed by the folding of the inner membrane of the mitochondrion.

B. Plasmodesmata The membrane surrounding the vacuole in plants.

C. Grana Membrane bound discs in chloroplasts that contain chlorophylls and carotenoids.

D. Middle lamella Layer between adjacent cells walls in plants derived from cell plate.

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Chromosomes having equal or almost equal arms are called

A. metacentric

B. acrocentric

C. polycentric

D. acentric.

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Match column-I with column-II and choose the correct option.
Column-IColumn-II
A. TonoplastI. Contain digestive enzyme
B. Contractile vacuoleII. Store metabolic gases
C. Food vacuoleIII. Excretion
D. Air vacuoleIV. Transport of ions in plants

A. A IV; B III; C I; D II

B. A II; B III; C IV; D I

C. A IV; B II; C III; D I

D. A I; B III; C II; D IV

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4

Polysome is a chain of

A. oxysomes

B. sphaerosomes

C. ribosomes

D. dictyosomes

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Microtubules are absent in

A. mitochondria

B. centriole

C. flagella

D. spindle fibres

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Both the membranes of mitochondrion are

A. structurally different but functionally similar.

B. structurally as well as functionally different.

C. structurally similar but functionally different.

D. structurally different but functionally similar.

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Difference between the prokaryotic and eukaryotic cells in having

A. cell wall

B. nuclear membrane

C. ribosome

D. none of these

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Which of the following statements is/are correct ?
  1. The shape of the cells may vary with the function they perform.
  2. Human RBC is about 7.0 ??m in diameter.
  3. Cytoplasm is the main area of cellular activities.
  4. Various chemical reactions occur in cytoplasm to keep the cell in the living state.

A. (i), (ii), (iii) and (iv)

B. Only (i) and (ii)

C. Only (iv)

D. None of the above

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The lipid component of the membrane mainly consists of __________.

A. polysaccharides

B. phosphoglyceride

C. monosaccharaides

D. both (a) and (c)

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4

The best material for study of structure of cell membrane is

A. RBC of human

B. RBC of frog

C. cheek cell of human

D. liver cell of rat

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4

Extension of plasma membrane in prokaryotic cell is

A. mesosome

B. haploid

C. ribosome

D. none of these

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You are asked to examine a cell using a powerful light microscope. The image you see has a clearly defined nucleus and mitochondria. It also has a large central vacuole and chloroplasts. From what group of organisms did this cell most likely come?

A. Bacteria

B. Protists

C. Fungi

D. Plants

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Which of the following lacks cell wall?

A. Gametes

B. Amoeba

C. Mycoplasma

D. All of these

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Which function is carried out by the cell organelle 'X'?

A. helps control the movement of substance in and out of the cell

B. passes information from the parent cell to newly formed cell

C. maintains the proper shape of the cell and serves as a protective barrier

D. helps the cell to make food with the help of chlorophyll and sunlight