Tag: component of the cell

Questions Related to component of the cell

The term 'cytoplasm' and 'nucleoplasm' were given by

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

  1. Purkinje

  2. Strasburger

  3. Brown

  4. Flemming

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Correct Option: B
Explanation:

The terms cytoplasm and nucleoplasm were given by Strasburger in 1882. Cytoplasm is the bulk of protoplasm excluding nucleus and vacuoles. Cytoplasm is differentiated into a cytoplasmic matrix, cell organelles and cell inclusions. Nucleoplasm or nuclear sap or karyolymph or karyoplasma is a colloidal complex that fills the nucleus. Nucleoplasm contains the raw materials for the synthesis of DNA and RNA.

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

Show answer
Correct Option: B
Explanation:

The nucleus is the main organelle which controls the activities of all the other organelles present in the eukaryotic cell. 

The chloroplast contains the green chlorophyll pigments in the cells of the green plants.
The cell wall is the outer layer of a cell which provides protection to the plant cell. 
The cell membrane is selectively permeable and allows the water and gas to enter and exit from the cell.
Thus, the correct answer is option B. 

Jelly-like semifluid complex of cytoplasm is called 

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

  1. Endoplast

  2. Cytosol

  3. Cytoplasmic matrix

  4. Both B and C

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Correct Option: D
Explanation:
  • The jelly-like semifluid complex of cytoplasm is called cytosol or cytoplasmic 
matrix or intracellular fluid.
  • In the eukaryotic cell, the cytosol is surrounded by the cell membrane and is part of the cytoplasm, which also comprises the mitochondria, plastids, and other organelles except nucleus. The cytosol is thus a liquid matrix around the organelles.
  • So, the correct answer is 'Both B and C'.

The main features of Cnidarians is their specialized cells called ________.

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

  1. Epithelial

  2. Cnidocytes

  3. Coenocytes

  4. Polyps

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Correct Option: B
Explanation:

Cnidocytes contain stinging structure known as nematocysts. Cnidocytes in tentacular region help in capturing the larger prey as their nematocytes discharge toxins into their prey.

Substance forming $80$% of cytoplasm in plant cells is

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

  1. Proteins

  2. Water

  3. Fats

  4. Minerals

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Correct Option: B
Explanation:

Cytoplasm is the fluid which is present in the living cell. It lies between the cell membrane and the nuclear membrane. It consists of 80% water. It is a colorless liquid which holds the cell organelle and helps in intracellular and intercellular transport. The cellular process like glycolysis and the cell division occurs in the cytoplasm. So, the correct answer is option B.

Gel part below the plasma membrane is

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

  1. Ectoplasm

  2. Endoplasm

  3. Plasmalemma

  4. None of the above

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Correct Option: A
Explanation:
  • The gel part below the plasma membrane is ectoplasm.
  • The cytoplasm of the cell can be divided into two i.e, ectoplasm and endoplasm.
  • Ectoplasm or exoplasm is the outer, non-granulated gel-like part of the cytoplasm of the cell near to the plasma membrane.
  • Whereas. the endoplasm is the inner granulated layer of the cytoplasm.
  • So, the correct answer is 'Ectoplasm'.

The main arena of various activities of a cell is

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

  1. Mitochondrion

  2. Cytoplasm

  3. Nucleus

  4. Plasma membrane

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Correct Option: B
Explanation:
  • The main arena of various cellular activities of a cell occur is cytoplasm.
  • Cytoplasm can be defined as a jellylike material present within the cell (inside the cell membrane) which surrounds the nucleus.
  • All the cellular organelles such as mitochondria, the endoplasmic reticulum, and chloroplasts, are contained in the cytoplasm (all the cellular activities carried out here).
  • So, the correct answer is 'Cytoplasm'.

Proteins required for functioning of nucleus are formed in

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

  1. Cytoplasm

  2. RER

  3. Nucleolus

  4. Mitochondria.

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Correct Option: A

Which one is not properly paired?

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

  1. Golgi apparatus- Breaking of complex macromolecules

  2. Endoplasmic reticulum- Protein synthesis

  3. Mitochondria- Oxidative phosphorylation

  4. Chloroplasts- Photosynthesis

Show answer
Correct Option: A
Explanation:
A. Golgi apparatus is an organelle found in the eukaryotic cells which forms a complex of vesicles and folded membranes within the cytoplasm that is involved in secretion and helps in intracellular transport.
B. The endoplasmic reticulum (smooth and rough) is an interconnected network of flattened, membrane-enclosed sacs which helps in the synthesis of lipids (SER) and proteins (RER).
C. The mitochondria is a double-membraned cell organelle (powerhouse of the cell) which is the site of the ETC and synthesis of ATP molecule or oxidative phosphorylation.
D. Chloroplast is a plastid which contains chlorophyll (green pigment) and is  present in the green parts of plants where photosynthesis takes place.
So, the correct answer is 'Golgi apparatus-Breaking of complex macromolecules'.

Most of the water found in the young cell occurs in

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

  1. Cell wall

  2. Nucleus

  3. Cytoplasm

  4. Vacuoles

Show answer
Correct Option: C
Explanation:
Cytoplasm is the fluid which is present in the living cell. It lies between the cell membrane and the nuclear membrane. It consists of 80% water. It is a colourless liquid which holds the cell organelle and helps in intracellular and intercellular transport. The cellular process like glycolysis and the cell division occurs in the cytoplasm. 
The nucleus contains genetic material like DNA and RNA and helps in the inheritance of genetic characteristics.
The cell wall is made up of cellulose and provides structure and shape to the cell.
Vacuoles are the storage organelles which stores air, water, and food.
So, the correct answer is option C.