Endoplasmic Reticulum

Q.

Who discovered the endoplasmic reticulum?

Q. SER is involved in the synthesis of

1. lipids
2. proteins
3. steroid hormones
4. both a and c

Q.

Is there an endomembrane system in plant cells?

Q.

What is included in the Endomembrane system?

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

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

Q. Identify the part from which spindle fibres originate.

1. 
2. 
3. 

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

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

Q. Which of the following are functions of the ER?

1. Transportation
2. $\mathrm{Glycogen}\mathrm{synthesis}$
3. Lipid synthesis
4. $\mathrm{Protein}\mathrm{synthesis}$
5. DNA replication
6. Detoxification
7. Respiration
8. $\mathrm{Membrane}\mathrm{formation}$

Q.

What does the Endomembrane System include?

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. Which of the following are functions of the RER?

1. Protein synthesis
2. Lipid synthesis
3. Hormone secretion
4. Protein folding

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

1. Cleavage of signal peptide
2. Protein glycosylation
3. Protein folding
4. Phospholipid synthesis

Q. Which among the following is not a function of rough endoplasmic reticulum?

1. Protein folding
2. Protein glycosylation
3. Cleavage of signal peptide
4. Phospholipid synthesis

Q.

The endomembrane system does not include:

1. Mitochondria

2. Lysosomes

3. Vacuoles

4. Golgi complex

Q. A major site for the synthesis of lipids is:

1. RER
2. SER
3. Symplast
4. Nucleoplasm

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. The role of detoxification in the liver is performed by

1. ribosomes
2. Golgi complex
3. SER
4. RER

Q. Which of the following is associated with detoxification of drugs and muscle contraction influenced by the release and uptake of ${\mathrm{Ca}}^{2+}$ ions?

1. Golgi complex
2. RER
3. SER
4. Free ribosomes

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

Q. A major site for the synthesis of lipids is:

1. RER
2. SER
3. Symplast
4. Nucleoplasm

Q. The main organelle involved in modification and routing of newly synthesized proteins to their destinations is:

1. Endoplasmic reticulum
2. Lysosome
3. Mitochondria
4. Chloroplast

Q. Which of the following is not a function of Rough endoplasmic Reticulum?

1. Provides a surface for ribosomes
2. Surface for protein synthesis
3. Involved in post-translational modification of proteins
4. Calcium storage

Q.

Statement 1: Nuclear membrane and the endoplasmic reticulum were originally formed from the invaginations of the cell membrane.
Statement 2: Mitochondria and chloroplast are the results of a symbiotic association of bacteria with primitive pre-eukaryotic cells.

1. Only statement 2 is true

2. Only statement 1 is true

3. Both the statements are true

4. Both the statements are false