Rough ER

Q. Where are proteins synthesized inside the cell?

Q. What are 70S ribosomes?

Q.

Are Ribosomes found in plant cells?

Q.

Write the main function of:

1. Cell wall
   
2. Cell membrane
   
3. Endoplasmic reticulum
   
4. Mitochondria
   
5. Plastids
   
6. Ribosome
7. Golgi body
8. Lysosome
9. Centrosome
10. Vacuoles
11. Nucleus
12. Chromosome
    

Q.

Name the cell organelles which have their own DNA and Ribosomes.

Q.

Read the statements given below and choose the correct option-

Assertion: The Endoplasmic Reticulum, which lacks ribosomes is called a Smooth Endoplasmic Reticulum (SER).

Reason: SER is Mainly Involved in Protein Synthesis.

1. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

2. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

3. Both Assertion and Reason are incorrect.

4. Assertion is correct but Reason is incorrect.

Q.

Question 10
Find out the correct sentence.

(a) Enzymes packed in the Lysosomes are synthesized by the RER (rough endoplasmic reticulum).
(b) Rough endoplasmic reticulum and smooth endoplasmic reticulum produce lipids and proteins respectively.
(c) The endoplasmic reticulum is related to the destruction of plasma membrane.
(d) Nucleoid is present inside the nucleoplasm of the eukaryotic nucleus.

Q.

Which organelle is associated with ribosome formation?

Q.

Are ribosomes present in plant or animal cells?

Q.

Give the function of ribosomes.

Q.

Where are protein synthesized inside the cell

Q.

Which is the chief organelle involved in the modification and routing of newly synthesized proteins to their destinations?

Q. Which of the following group of organelles are involved in manufacturing substances required by the cell

1. Vacuole, rough ER, smooth ER
2. Vacuole, ribosome, lysosome
3. Rough ER, lysosome, vacuole
4. Ribosome, rough ER, smooth ER

Q.

Do ribosomes contain DNA?

Q.

Which one of the following cell organelles is correctly matched with its function ?
(a) Ribosomes — Synthesis of proteins
(b) Mitochondria — Secretion of enzymes
(c) Plasma membrane — Freely permeable
(d) Centrosome — Carries genes

Q.

What is the function of ribosomes?

Q.

Ribosomes are found attached to the surface of ___.

Q.

Where will you find more number of ribosomes - in cancer cells or fat cells. Justify.

Q.

Name the following :

(a) Smallest cell organelle

(b) Largest cell organelle;

(c) ER studded with ribosomes

(d) Functional segments of DNA molecule.

Q.

The smooth endoplasmic reticulum is the site of protein production

1. True

2. False

Q.

What is the main function of each of the following organelles ?

(a) Ribosome; (b) Cell wall

Q.

Identify the labelled parts in the given image.

1. A – rough endoplasmic reticulum and B -ribosome

2. A – ribosome and B - rough endoplasmic reticulum

3. A – ribosome and B- smooth endoplasmic reticulum

4. A – smooth endoplasmic reticulum and B –ribosome

Q. Match Column - I with Column - II and select the correct answer using the codes given below the columns.

$\begin{array}{cc}Column-I\left(Organelles\right)& Column-II\left(Membranes\right)\\ A.Mitochondria& P.Withoutmembrane\\ B.Lysosomes& Q.Singlemembrane\\ C.Ribosomes& R.Doublemembrane\end{array}$

1. A - R; B - Q; C - P
2. A - Q; B - R; C - P
3. A - R; B - P; C - Q
4. A - P; B - Q; C - R

Q. Match the Column-I with Column-II and select the correct option.

Column-I a. RER b. SER

Column-II (i) Detoxification of many poisons (ii) Synthesis of steroid hormones (iii) Biosynthesis of cholesterol (iv) Synthesis of glycogen (v) Synthesis of proteins

1. a(v), b(i, ii, iii, iv)
2. a(iv, v), b(i, ii, iii)
3. a(i, iii, iv), b(ii, v)
4. a(iii), b(i, ii, iv, v)

Q.

What organelle helps in packaging and secretion of proteins?

1. Mitochondria

2. Nucleus

3. Golgi Bodies

4. ER

Q.

The process of protein synthesis occurs in:

1. Mitochondria

2. Nucleus

3. Lysosomes

4. Ribosomes

Q.

What will happen to cell life if ER were absent (3 marks)

Q.

What is the function of ribosomes?

Q.

The process of protein synthesis occurs in ___ .

1. Nucleus

2. Lysosomes

3. Ribosomes

4. Mitochondria

Q.

In which cell structure are ribosomes produced?