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Chapter: 11th Botany : Chapter 6 : Cell: The Unit of Life

Cell - The Unit of Life: Important Questions

Evaluation, Multiple choice questions with answers / choose the correct answer with answers, Book back 1 mark questions and answers, Answer the question

Cell biology and Biomolecules

Cell: The Unit of Life

 

Evaluation

 

1. The two subunits of ribosomes remain united at critical ion level of

a. Magnesium

b. Calcium

c. Sodium

d. Ferrous

 

2. Sequences of which of the following is used to know the phylogeny

a. mRNA

b. rRNA

c. tRNA

d. Hn RNA

 

3. Many cells function properly and divide mitotically even though they do not have

a. Plasma membrane

b. cytoskeleton

c. mitochondria

d. Plastids

 

4. Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other

a. Neither lipid nor proteins can flip-flop

b. Both lipid and proteins can flip flop

c. While lipids can rarely flip-flop proteins cannot

d. While proteins can flip-flop lipids cannot

 

5. Match the columns and identify the correct option:

Column-I : Column-II

(a) Thylakoids (i) Disc-shaped sacs in Golgi apparatus

(b) Cristae (ii) Condensed structure of DNA

(c) Cisternae (iii) Flat membranous sacs in stroma

(d) Chromatin (iv) Infoldings in mitochondria

 (1) (a): (iii), (b): (iv) , (c): (ii) , (d): (i)

(2) (a): (iv) , (b): (iii), (c): (i) , (d): (ii)

(3) (a): (iii) , (b): (iv) , (c): (i) , (d): (ii)

(4) (a): (iii) , (b): (i) , (c): (iv) , (d): (ii)

 

6. Bring out the significance of phase contrast microscopy

7. State the protoplasm theory

8. Distinguish between prokaryotes and eukaryotes

9. Difference between plant and animal cell

10. Draw the ultra structure of plant cell

 

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