Endoplasmic Reticulum

Q.

Where is DNA found in a cell?

Q.

Where Is DNA found In the human body?

Q.

Which cell organelle is involved in protein synthesis?

Q.

What is the endoplasmic reticulum?

Q.

Where are the enzymes used by lysosome produced?

1. Mitochondria

2. Golgi Body

3. Rough Endoplasmic Reticulum

4. Smooth Endoplasmic Reticulum

Q.

How are Golgi bodies formed?

Q. Where do the lipids and proteins constituting the cell membrane get synthesized?

1. Smooth endoplasmic reticulum (SER) and ribosomes respectively
2. Mitochondria and lysosome respectively
3. Ribosomes and SER respectively
4. None of the above

Q.

Mechanical support, enzyme circulation protein synthesis, and detoxification of drugs are the function of

1. ER

2. Ribosomes

3. Dictyosomes

4. Chloroplast

Q.

What are the other names of Golgi bodies?

Q. Which of the following organelle is not enclosed by a membrane?

1. Lysosome
2. Vacuole
3. Chloroplast
4. Ribosome

Q. RER is rough due to the presence of _______ .

1. lysosomes
2. DNA
3. ribosomes
4. lipids

Q. 'A' is a region where the genetic material is present in a prokaryotic cell.
'B' is an organelle responsible for phototsynthesis.
'C' is an organelle present in both prokaryotic and eukaryotic cells.
Identify A, B and C.

1. A: Vacuole, B: Chloroplast, C: Mitochondria
2. A: Ribosome, B: Mitochondria, C: Chloroplast
3. A: Nucleus, B: Chloroplast, C: Mitochondria
4. A: Nucleoid, B: Chloroplast, C: Ribosome

Q.

Consider the following statements and choose the correct one:

1. Plant cells have centrioles which are absent in almost all animal cells.

2. Ribosomes are the site of protein synthesis.

3. The middle lamella is a layer mainly of calcium carbonate which holds the different neighboring cells together

4. In all animal cells, steroidal hormones are synthesized by smooth endoplasmic reticulum

Q.

Question 35
Name any cell organelle which is non membranous.

Q.

Why RER membrane is rough in nature?

Q.

Which one of the following organelles is correctly matched with its function?

1. Rough endoplasmic reticulum, protein synthesis

2. Lysosomes, produce energy currency of the cell

3. Golgi apparatus, protein snthesis

4. Mitochondria, ​​​​​​digest excess or worn out organelles

Q.

What are ribosomes composed of?

Q.

__ differentiates the rough and smooth endoplasmic reticulum.

Q. Microtubules grow from the poles to kinetochores of each chromatid during prophase.

1. False
2. True

Q. Assertion :The endomembrane system includes endoplasmic reticulum (ER), Golgi complex, lysosomes and vacuoles. Reason: Mitochondria, chloroplast and peroxisomes are not the part of endomembrane system because their function are not coordinated with the same.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q.

Long flattened, usually unbranched units arranged in parallel stacks in endoplasmic reticulum are called

1. cisternae

2. vesicles

3. cristae

4. tubules

Q. Write a short note on Endoplasmic reticulum with a neat labeled diagram.

Q. 40S and 60S are

1. Types of rRNA in eukaryotes
2. Types of rRNA in prokaryotes
3. Ribosomal subunits in eukaryotes
4. Ribosomal subunits in prokaryotes

Q.

What is the function of golgi bodies?

Q.

Transporting channels of the cell_____________.

Q.

How can signals be amplified?

Q.

What is/are the chief function of a nucleus?

1. It coordinates the cell's activities.

2. It regulates cell function.

3. All of these.

4. It stores the cell's hereditary material.

Q.

The small rod-shaped structure is bound by a double membrane which helps in the oxidation of food to release energy is

1. mitochondria

2. Golgi complex

3. nucleus

4. vacuole

Q.

The only cell organelle seen in a prokaryotic cell is

1. Mitochondria

2. Ribosomes

3. Plastids

4. Lysosomes

Q.

Four students labelled the diagram of an onion peel in the following ways. The correctly labelled diagram is

1. A

2. C

3. B

4. D