Tag: membrane bound organelles

Questions Related to membrane bound organelles

Select the incorrect match : 

botany nucleus and chromosome membrane bound organelles cell: size and differentiation microscopy

  1. Submetacentric - L-shaped chromosomes chromosomes

  2. Allosomes - Sex chromosomes

  3. Lampbrush - Diplotene bivalents chromosomes

  4. Polytene - Oocytes of chromosomes amphibians

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Correct Option: D
Explanation:

Polytene chromosomes are large chromosomes which have thousands of DNA strands. They provide a high level of function in certain tissues such as salivary glands of Drosophila.

Lampbrush chromosomes are a special form of chromosome found in the growing oocytes of most animals, except mammals. Lampbrush chromosomes of amphibians, birds and insects are described best of all. Chromosomes transform into the lampbrush form during the diplotene stage of meiotic prophase I. They are bivalent.
So, the correct option is 'Polytene - Oocytes of chromosomes amphibians'.

Which of the following cellular structure contain pigments ?

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. ER, Golgibody, Chloroplast

  2. Vacuole, Chromoplast, Chloroplast

  3. Chloroplast, Chromoplast, Leucoplast

  4. Chloroplast, Nucleus, Mitochondria

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Correct Option: B
Explanation:

Chromoplast and chloroplast are types of plastics containing pigments while leucoplasts do not contain pigments. That is why leucoplasts are colourless. Also, many pigments (e.g., anthocyanins) are localized in the vacuoles of epidermal cells from flowers, leaves, and stems.


So, the correct option is 'Vacuole, Chromoplast, Chloroplast'.

Cell vacuole contains

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Water

  2. Metabolic gases

  3. Water and dissolved substances

  4. Cytoplasm

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Correct Option: C
Explanation:
  • A vacuole is a membrane-bound 9tonoplast) organelle present in cells.
  • It forms an enclosed compartment within the cell which are filled with water, dissolved inorganic and organic molecules (enzymes)
  • It stores food and variety of nutrients required by the cell to survive and also store waste products which protect the cell from getting contaminated.
  • So, the correct answer is 'Water and dissolved substances'.

Vacuolar membrane of a cell is

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Plasmalemma

  2. Tonoplast

  3. Rhizoplast

  4. Mesosome

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Correct Option: B
Explanation:

Vacuolar membrane is a membrane surrounding the vacuole. It is also called as tonoplast. Like, cell membrane, it is semipermeable in nature. Therefore, option B is correct. 

Beet root is coloured because of the presence of

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Anthocyanin in cytoplasm

  2. Anthocyanin in vacuole

  3. Anthocyanin in chromoplasts

  4. Carotenoids of chromoplasts

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Correct Option: B
Explanation:

Beet root is coloured because of the presence of anthocyanin in vacuoles .Anthocyanin is the water soluble vacuolar pigments ,they contain red colour in roots of the caryophyllales [including cactus, beet and amaranth ]these roots are contain red in colour.But otherwise anthocyanin in chloroplast and chromoplast have roots green in colour.Carotenoid of chloroplast contain orange colour pigments and they are found in carrots
So the correct option is B

Cell sap is a

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Non-living fluid component of cytoplasm

  2. Living fluid component of cytoplasm

  3. Non-living fluid component of vacuole

  4. Living fluid component of vacuole

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Correct Option: C
Explanation:

A large central vacuole of a plant cell that stores water with inorganic and organic substance like sugar, salts and some pigments are the non-living fluid. It provides turgidity and osmolarity to the cell.

Maximum arm ratio is found in

botany nucleus and chromosome membrane bound organelles cell: size and differentiation microscopy

  1. Metacentric chromosome

  2. Acrocentric chromosome

  3. Telocentric chromosome

  4. Submetacentric chromosome

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Correct Option: B
Explanation:

The chromosomes were named according to the position of the centromeres. This is expressed in the ratio “long arm to short arm”. Here the following terms are used: metacentric (arm ratio 1.0–1.7), submetacentric (ratio 1.7–3.0), subtelocentric (ratio 3.0–7.0), acrocentric (ratio more than 7.0), and telocentric (chromosome with only one arm).

So, the correct answer is option B.

An ${A^o}$ is equal to 

bio-chemistry cell structure membrane bound organelles cell: size and differentiation microscopy

  1. $10^{-5}$cm

  2. $10^{-6}$cm

  3. $10^{-7}$cm

  4. $10^{-8}$cm

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Correct Option: D

One micrometre (micron, $\mu$m) is equal to

bio-chemistry cell structure membrane bound organelles cell: size and differentiation microscopy

  1. $0.1$mm

  2. $0.01$mm

  3. $0.001$mm

  4. $0.0001$mm

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Correct Option: C

A nanometre (nm) is equal to 

bio-chemistry cell structure membrane bound organelles cell: size and differentiation microscopy

  1. $10^{-9}$m

  2. $10^{-7}$cm

  3. $10 {A^o}$

  4. All of the above

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Correct Option: D