Tag: the components in a cell

Questions Related to the components in a cell

Which part of the cell is wrongly matched with its function?

bio-chemistry cell biology cytoplasm the components in a cell component of the cell

  1. Nucleus controls the activities of the cell

  2. Cytoplasm makes chlorophyll in green plants

  3. Cell wall protects a plant cell

  4. Cell membrane lets water and gas in and out of the cell

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Correct Option: B
Explanation:

The nucleus contains the genetic material of the cell and thus regulates all the activities of the cell.

Cytoplasm is the fluid present in the cell. It is present between plasma membrane and nucleus. it helps to maintain the shape of the cell and helps in distribution of cellular materials inside the cell.
Cell wall is a rigid covering mainly present in plant and bacterial cell and provides protection to the plant cell.
Cell membrane is a semipermeable membrane and it regulates the entry and exit of the molecules.
So, the correct answer is option B.

Which of the following is a part of protoplasm present between the nuclear membrane and cell organelle?

bio-chemistry cell biology cytoplasm the components in a cell component of the cell

  1. Leucoplast

  2. Nucleoplasm

  3. Cytoplasm

  4. None of the above

Show answer
Correct Option: C
Explanation:

Cytoplasm is a semi-fluid jelly like substance which contains various organelles and inclusions. It also contains a number of inorganic substances forming a clear true solution as well as organic substances like lipids, proteins and carbohydrates. It is homogenous and colourless in nature.

The peripheral zone of cytoplasm is thick and jelly like substance known as 

bio-chemistry cell biology cytoplasm the components in a cell component of the cell

  1. Plasmosol

  2. Nucleoid

  3. Plasmogel

  4. Plastid

Show answer
Correct Option: C
Explanation:

The peripheral zone of cytoplasm is a thick and jelly-like substance known as plasmogel. The neighbouring area of the nuclear region is thin and watery and is called as the plasmosol. It helps to regulate the amount of water needed by the cell in the cytoplasm.

So, the correct answer is option C.

A protoplast is

bio-chemistry cell biology cytoplasm the components in a cell component of the cell

  1. A cell organelle

  2. A cell with a wall

  3. A single wall-less cell

  4. Cell without nucleus

Show answer
Correct Option: C
Explanation:

Let's say, that we took a plant cell and used specific digestive enzymes to digest it's cell wall. 

After removing the cell wall, we call that cell as 'Protoplast'.
The protoplast typically consists of cytoplasm and plasma membrane but no cell wall.

Where, Cytoplasm is a fluid like substance present inside the plasma membrane and consisting of nutrients, biomolecules and all the cell organelles.
These cell organelles are such as mitochondria, ribosomes, endoplasmic reticulum, Golgi complex, Nucleus etc.

In the eukaryotic organisms such as plants and animals, nucleus is considered as the largest cell organelle.
Hence, the above explanation justifies the answer as option C  i.e., Protoplast is a single wall-less cell.

The main arena of various types of activities of a cell is

bio-chemistry cell biology cytoplasm the components in a cell component of the cell

  1. Nucleus

  2. Plasma membrane

  3. Mitochondria

  4. Cytoplasm

Show answer
Correct Option: D
Explanation:

The main arena of various types of cellular activities is the cytoplasm. Cytoplasm represents a bulk of protoplasm excluding nucleus and vacuoles. The inner part of cytoplasm is called as endoplasm and it is usually in perpetual motion called cyclosis or cytoplasmic streaming. Cytoplasm has various types of cell organelles. Cell organelles are highly organized subcellular protoplasmic structures that have a distinctive shape, chemical composition and function.

Select correct set of statements from given below.
A. The cytoplasm is the main arena of cellular activities in plants and animals. 
B. Cell envelope in bacteria is tightly linked 5 - layered structure.
C. The endomembrane system does not include semi-autonomous organelles.
D. Convex face of golgi bodies is maturing face.

bio-chemistry cell biology cytoplasm the components in a cell component of the cell

  1. A and D

  2. A and C

  3. A, C, D

  4. All are correct

Show answer
Correct Option: B
Explanation:
A. The cell organelles are present in the cytoplasm. Various cellular processes that are important for the survival of cell, occur in the cytoplasm.
B.  Cell envelope in bacteria is a two layered structure consisting of cell wall and cell membrane. In case of gram negative bacteria, an outer membrane is also present.
C. Endomembrane system includes endoplasmic reticulum, Golgi apparatus, vesicles and nuclear envelope. It does not include the semi-autonomous organelles i.e. chloroplast and mitochondrion.
D. Concave face or trans face of Golgi bodies is the maturing face.
Hence, statements A and C are correct.
So, the correct answer is 'A and C'.

What is a cytoplasm?

bio-chemistry cell biology cytoplasm the components in a cell component of the cell

  1. Irregularly shaped region within the cell that contains genetic material

  2. Storage bubbles found in cells

  3. Fluid content inside the plasma membrane

  4. Cells that lack cell membrane

Show answer
Correct Option: C
Explanation:

Cytoplasm can be defined as a thick solution that fills each cell and is enclosed by the cell membrane. It is mainly composed of water, salts and proteins. In eukaryotic cells, the cytoplasm includes all of the material inside the cell and outside of the nucleus. The cytoplasm is about 80% water and it is usually colourless.

Nucleoproteins are synthesised in?

bio-chemistry cell biology cytoplasm the components in a cell component of the cell

  1. Nucleoplasm

  2. Nuclear envelope

  3. Nucleolus

  4. Cytoplasm

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Correct Option: A

The semicircular channels and system of tubes found in cytoplasm are known as:

bio-chemistry cell biology cytoplasm the components in a cell component of the cell

  1. Ribosomes

  2. Endoplasmic reticulum

  3. Giyoxysomes

  4. Vacuaes

Show answer
Correct Option: B
Explanation:

The semicircular tube like structures present in the cytoplasm are Endoplasmic reticulum. 

So, the correct option is 'Endoplasmic reticulum'

Cytoplasm mostly consists of ________

bio-chemistry cell biology cytoplasm the components in a cell component of the cell

  1. Salt and water

  2. Lipids and proteins

  3. Proteins and water

  4. Salt and sugars

Show answer
Correct Option: A
Explanation:

The jelly like fluid that fills a cell is called cytoplasm. It is made up of mostly water and salt. Cytoplasm is present within the cell membrane of all cell types and contains all organelles and cell parts. It is made up of eighty percent water and is usually clear and colourless.