Endoplasmic Reticulum

Q.

Which of the structures is not found in a prokaryotic cell?

1. Mesosome

2. Nuclear envelope

3. Plasma membrane

4. Ribosome

Q. Endomembrane system includes cell organelles that are

1. single membrane-bound organelles
2. non-membrane bound organelles
3. single and double membrane-bound organelles
4. double membrane-bound organelles

Q.

What is the full form of RER and SER?

Q.

What is the full form of RER and SER?

Q. Nissl’s granules are made up of

1. Centrosomes
2. Smooth Endoplasmic Reticulum
3. Nucleus
4. Rough Endoplasmic Reticulum

Q. The luminal compartment in intracellular space refers to space inside the

1. cytoplasm
2. nucleus
3. endoplasmic reticulum (ER)
4. vacuole

Q.

During the denaturation process, which protein structure remain undamaged?

1. Both secondary and tertiary structures

2. Primary structure only

3. Only secondary structure

4. Only tertiary structure

Q.

Which of the following events does not occur in the rough endoplasmic reticulum?

1. protein glycosylation

2. phospholipid synthesis

3. cleavage of signal peptide

4. protein folding

Q. Which of the following organelles are part of the endomembrane system?

1. Lysosomes
2. Golgi apparatus
3. Mitochondria
4. Plastids

Q.

What are Palade particles?

Q. Small bristle like fibres sprouting out of the bacterial cell are

1. pili
2. mesosomes
3. cilia
4. fimbriae

Q. Steroidal hormones are synthesised in

1. ribosomes
2. rough ER
3. smooth ER
4. golgi complex

Q. Which of the following cell organelle is responsible for the synthesis of steroidal hormones and lipids?

1. Smooth endoplasmic reticulum
2. Mitochondrion
3. Ribosome
4. Rough endoplasmic reticulum

Q.

Are ribosomes membrane-bound?

Q.

Name a cytoskeletal element that is involved in the amoeboid movement in the body?

Q.

Which one of the following cellular parts is correctly described?

1. A) Thylakoids – flattened membranous sacs forming the grana of chloroplasts

2. B) Lysosomes – optimally active at a pH of about 8.5

3. C) Centrioles – sites for active RNA synthesis

4. D) Ribosomes – those on chloroplasts are larger (80s) while those in the cytoplasm are smaller (70s)

Q. Endomembrane system includes cell organelles that are

1. single membrane-bound organelles
2. non-membrane bound organelles
3. single and double membrane-bound organelles
4. double membrane-bound organelles

Q. is a function of smooth endoplasmic reticulum.

1. Protein synthesis
2. Enzyme synthesis
3. Lipid synthesis
4. DNA synthesis

Q.

Cells are small in size because:

1. Small size of cells provides a large surface area to volume ratio and makes it efficient

2. Cell is made up of atoms and molecules and since they are small in size, cell also need to be small

3. There are not enough big proteins to make the cell large

4. None of the above

Q. Select the correct statement.

1. RER has ribosomes but SER has no ribosome
2. RER has no ribosome but SER has ribosomes
3. RER is involved in the synthesis of lipids
4. SER is involved in the synthesis of proteins

Q. Consider the following statements
I. The endomembrane system includes plasma membrane, ER, Golgi complex, lysosomes and vacuoles.
II. ER helps in the transport of substances, synthesis of proteins, lipoproteins and glycogen.
III. Ribosomes are involved in protein synthesis.
IV. Mitochondria help in oxidatiove phosphorylation and generation of ATP.
Which of these statements is true?

1. Only IV
2. Only I
3. II, III and IV
4. Only II
5. Only III

Q.

Question 26

Differentiate between Rough Endoplasmic Reticulum (RER) and Smooth Endoplasmic Reticulum (SER).

Q. Explain how during light reaction of photosynthesis, ATP synthesis is a chemiosmotic phenomenon.

Q.

Is golgi apparatus prokaryotic or eukaryotic?

Q. All of the following are parts of plant cells EXCEPT

1. centrioles
2. mitochondria.
3. chloroplasts.
4. cell wall

Q. The membrane of the thylakoids enclose a space called:

1. Matrix
2. Grana
3. Stroma
4. Lumen

Q.

Which of the following ribosomes are involved in protein synthesis?

1. Ribosomes which occur on the nuclear membrane and E.R

2. Ribosomes of only cytosol

3. Ribosomes of only nucleolus and cytosol

4. Ribosomes of only mitochondria and cytosol

Q.

An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called?

1. endoplasmic reticulum

2. plasmalemma

3. thylakoid

4. cytoskeleton

Q. Which one of the following organelle in the figure correctly matches with its function ?

1. Rough endoplasmic reticulum, formation of glycoproteins
2. Golgi apparatus, protein snthesis
3. Golgi apparatus, formation of glycolipids
4. Rough endoplasmic reticulum, protein synthesis

Q.

Question 8

Which of the following statement is true for a secretory cell?

(a) Golgi apparatus is absent

(b) Rough Endoplasmic Reticulum (RER) is easily observed in the cell.

(c) Only Smooth Endoplasmic Reticulum (SER) is present.

(d) Secretory granules are formed in nucleus.