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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

Correct Answer :

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


The cell membrane (marked as x) helps control entry and exit of substances into the cell. Nucleus passes the information from the parent cell to the new cell. It is also called the control center of the cell. A cell wall is the tough, rigid layer present outside of the plant cell. It provides structural support and protection to the cell. Chloroplast occurs in the plant cells and contains chlorophyll that helps the cell in making food.

Related Questions

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Which of the following is absent in prokaryotes?

A. DNA

B. RNA

C. Plasma membrane

D. Mitochondria

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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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_______________ is the important site of formation of glycoproteins and golycolipids.

A. SER

B. Lysosome

C. Golgi apparatus

D. Mitochondria

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Active transport differs from passive transport in that active transport

A. requires energy.

B. always requires input of ATP.

C. moves molecules against a concentration gradient.

D. both (a) and (c)

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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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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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Which of the following option correctly match A, B, C, and D indicated in the given sectional view of chloroplasts.

A. A - Thylakoid, B-Stromal lamella, C - Stroma, D - Granum

B. A - Granum, B - Thylakoid, C - Stromal lamella, D - Stroma

C. A - Thylakoid, B - Granum, C - Stromal lamella, D - Stroma

D. A - Granum, B - Thylakoid, C - Stroma, D - Stromal lamella

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Which of the following statement is correct regarding vacuole?

A. It is membrane-bound and contains storage proteins and lipids.

B. It is membrane-bound and contains water and excretory substances.

C. It lacks membrane and contains air.

D. It lacks membrane and contains water and excretory substances.

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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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The diagram given below represent a filuid mosaic model of plasma membrance. Match the components marked as A, B, C, D and E in the diagram below from the list (i) to (vii).

  1. Sugar
  2. Protein
  3. Lipid bilayer
  4. Integral protein
  5. Cytoplasm
  6. Cell wall
  7. External protein

A. A - (i), B - (ii), C - (iii), D - (iv), E - (v)

B. A - (ii), B - (i), C - (iii), D - (iv), E - (v)

C. A - (i), B - (ii), C - (iii), D - (iv), E - (vi)

D. A - (i), B - (ii), C - (iii), D - (vii), E - (v)

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Which of the following is incorrect ?

A. Mycoplasma is the smallest cell (0.3 �).

B. Bacteria are 3 to 5 �m in size.

C. The largest cell is the egg of an ostrich.

D. Nerve cells are some of the smallest cells.

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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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Statement 1: Centrosomes and centrioles are related to each other.
Statement 2: Centrosome usually contains two cylindrical structures called centrioles.

A. Both statements -1 and statement - 2 are true and statement - 2 is the correct explanation of statement - 1.

B. Both statements -1 and statement - 2 are true but statement - 2 is not the correct explanation of statement - 1.

C. Statement -1 is true and statement - 2 is false.

D. Statement -1 is false and statement - 2 is true.

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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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An organalle devoid of membrane covering is

A. vacuole

B. ribosome

C. peroxisome

D. lysosome

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Most of water, in mature plant cells occurs in

A. nucleus

B. cell wall

C. vacuoles

D. cytoplasm

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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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Which of these is wrongly matched?

A. Chloroplasts Chlorophyll

B. Elaioplasts Starch

C. Chromoplasts Carotenoids

D. Amyloplasts Carbohydrates

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9.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

Explain why the samples were belonged to eukaryotic cell and not prokaryotic cell? Because,

A. eukaryotic cell have membrane bound organelles.

B. eukaryotic cell have non - membrane bound organelles.

C. eukaryotic cell are smaller and multiply more rapidly than prokaryotic cells.

D. eukaryotic cell are larger and multiply more rapidly than prokaryotic cells.

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Basal bodies are associated with the formation of

A. phragmoplast

B. cilia and flagella

C. cell plate

D. kinetochore

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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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Match column-I with column-II and select the correct option.
Column - IColumn - II
A. RERI. Intracellular and extracellular digestion
B. Cell wallII. Provide structural support to the cell
C. FlagellaIII. Protein synthesis and secretion
D. LysosomesIV Responsible for cell movement

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

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

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

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

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Which one of the following is not considered as part of the endomembrane system?

A. Golgi complex

B. Peroxisome

C. Vacuole

D. Lysosome

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Extension of plasma membrane in prokaryotic cell is

A. mesosome

B. haploid

C. ribosome

D. none of these

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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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In the given figure of animal cell, one orginelle is marked as A. Select the correct identification and function of the organelle A from the given option.

A. Endoplasmic reticulum Synthesis of lipids.

B. Mitochondria Produce cellular energy in the form of ATP.

C. Golgi body Provides packaging material.

D. Lysosomes Secrete hydrolytic enzymes.

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Which of the following cell organelles were discovered after the introduction of electron microscope?

A. Mitochondria

B. Endoplasmic reticulum

C. Ribosomes

D. Both (b) and (c)

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Nucleolus is

A. rounded structure found in cytoplasm near nucleus.

B. rounded structure inside nucleus and having rRNA.

C. rod-shaped structure in cytoplasm near the nucleus.

D. none of the above.

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Which one of the following cellular parts is correctly matched with their characters ?

A. Centrioles Sites for active RNA synthesis.

B. Lysosomes Optimally active at a pH of about 8.5.

C. Thylakoids Flattened membranous sacs forming the grana of chloroplasts.

D. Ribosomes Those on chloroplasts are larger (80S) while those in the cytoplasm are smaller (70S).

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What would happen if lysosomes get ruptured in a cell?

A. Cell dies

B. Cell shrinks

C. Cell swell up

D. Nothing would happen