Tag: cell biology

Questions Related to cell biology

Which of the following is not a function of cytoplasm ?

  1. Aids in the movement of the different cellular elements

  2. Means of transport for genetic material

  3. Site of replication of DNA

  4. Transports the products of cellular respiration


Correct Option: C
Explanation:

Cytoplasm is a jelly liquid surrounded by cell membrane that consists of various cell organelles. It is the site of many biochemical reactions that are vital and crucial for maintaining life. However replication of DNA takes place in nucleus which is present in cytoplasm. Hence cytoplasm is not the site of DNA replication.

Cytosol consists of

  1. Cytoskeleton filaments

  2. Dissolved molecules

  3. Water

  4. All of the above


Correct Option: D
Explanation:

The cytosol is the portion of the cytoplasm and made up of cytoskeleton filaments, some dissolved molecules and water. The cytosol's filament is the protein filaments such as actin filaments and microtubules that make up the cytoskeleton, as well as soluble proteins and small structures such as ribosomes, proteasomes. Thus, the correct answer is option D.

Cytoplasm is surrounded by 

  1. Capsule

  2. Cell wall

  3. Cell membrane

  4. None of the above


Correct Option: C
Explanation:
  • Cytoplasm is the jelly-like fluid surrounded by the cell membrane and holds all the organelles. 
  • The cytoskeleton present in the cytoplasm gives the cell its shape. 
  • The cytoplasm constitutes of dissolved nutrients and it aids to dissolve waste products.

    Hence, the correct option is C .

.......... is the medium where organelles are suspended.

  1. Cytoplasm

  2. Plasma

  3. Mucus

  4. None of the above


Correct Option: A
Explanation:

Cytoplasm is the jelly-like fluid present in cells that hold organelles and surrounded by the cell membrane. Besides giving shape to the cell, the cytoskeleton facilitates the movement of the cell and the different substances found within the cell. 

.......... of the cytoplasm provide shape to cell.

  1. Cytosol

  2. Cytoskeleton

  3. Cytosome

  4. Bones


Correct Option: B
Explanation:

Cytoplasm is the jelly-like fluid surrounded by the cell membrane and holds all the organelles. It is the site of many biochemical reactions that are vital and crucial for maintaining life. The cytoplasm is the place where the cell expands and growth of the cell takes place. The cytoskeleton of the cytoplasm provides shape to the cell and it also facilitates movement.

The flow of cytoplasmic components is dependent on .......... of cytoplasm.

  1. Life span

  2. Cytosol

  3. Permeability

  4. Solubility


Correct Option: C
Explanation:

Answer is option C i.e. "Permeability"
Cytoplasmic streaming is the flow of cytoplasmic components. It plays an important role in many cellular functions which are dependent on the permeability of the cytoplasm. For example, cell signalling through the cytoplasm
. It helps in movement of larger molecules and subcellular structures through the cytoplasm.

The nucleus of cell is separated from cytoplasm by

  1. Cell membrane

  2. Cytoplasmic membrane

  3. Cell wall

  4. Nuclear membrane


Correct Option: D
Explanation:
  • Cytoplasm is the jelly-like fluid present in cells that hold organelles and surrounded by the cell membrane. 
  • In eukaryotes, the nucleus of a cell is separated from the cytoplasm by a double membrane, known as a nuclear membrane. 

    Hence, the correct option is D.

Which of the following are organelles of the cell?

  1. Cytosol

  2. Lysosomes

  3. Cell wall

  4. All of the above


Correct Option: B
Explanation:

Organelles are usually membrane-bound structures inside the cell that have specific functions. Some major organelles that are suspended in the cytosol are the mitochondria, the endoplasmic reticulum, the Golgi apparatus, vacuoles, lysosomes and in plant cells; chloroplasts. 

Which of the following is the component of cytoplasm?

  1. Cytosol

  2. Cytoplasmic inclusions

  3. Organelles

  4. All of the above


Correct Option: D
Explanation:

Cytoplasm is the jelly-like fluid present in cells that hold organelles and surrounded by the cell membrane. The cytoplasm has three major components- the cytosol, organelles and cytoplasmic inclusions, of which the cytosol is the thick fluid where other cytoplasmic elements remain suspended. The cytosol consists of 70% to 90% water, and it is usually colourless. 

Identify the statement that is not true.

  1. Cytoplasm contains jelly-like substance

  2. Nucleus makes food for the plant

  3. Chloroplast contains chlorophyll

  4. Cytoplasm is the site where many cell activities take place


Correct Option: B
Explanation:

The cytoplasm is the jelly-like matrix in the interior of the cell. The chloroplast contains the chlorophyll pigments which are involved in the production of the food. The solar energy is captured and used for making the food for the plant. The cytoplasm is the site where many cell processes takes place.

Thus, the correct answer is option B.