Nucleus

Q.

Define protoplasm.

Q.

What are the components of a nucleus? [2 MARKS]

Q.

Do bacteria have mitochondria?

Q.

Write three basic components of a cell. Write function of any two.

Q. What are the three main parts of a cell?

1. nucleus, cytoplasm and mitochondria
2. mitochondria , cell membrane and nucleus
3. cytoplasm, cell membrane, golgi complex
4. cytoplasm, cell membrane and nucleus

Q. is the genetic material of almost all the living organisms.

1. Protein
2. DNA
3. Lipid
4. Carbohydrate

Q.

What is the difference between cytoplasm and protoplasm?

Q.

How many chromatin do humans have?

Q.

Which structure in the nucleus is a storehouse of information needed by the cell to function?

Q.

What are chromosomes and why are they called seat of hereditary information

Q.

Movement of water across cell membrane takes place by ______.

Q.

Nucleus contains thread-like structures called

1. Cytoplasm

2. Chromosomes

3. Nucleolus

4. Chloroplast

Q.

Which of the following organelles controls and coordinates all the activities of a cell?

1. nucleoplasm
2. cell juice
3. sap
4. cytoplasm

Q.

The membrane that separates the nucleus from the cytoplasm is known as:

1. Cyto membrane

2. Plasma membrane

3. Nuclear membrane

4. Cell membrane

Q.

Pseudopodia means

1. pseudopodia (pseudo: true; podia: feet).

2. pseudopodia (pseudo: true; podia: body).

3. pseudopodia (pseudo: false; podia body).

4. pseudopodia (pseudo: false; podia: feet).

Q.

Which of these is not a component of a nucleus?

1. Nucleolus

2. Chromosomes

3. Stroma

4. Nucleoplasm

Q. Given below is the image of a cheek cell. Correctly label A, B, C and D.

1. A- Cell membrane
   B- Cytoplasm
   C- Nucleus
   D- Nuclear membrane
2. A- Cell membrane
   B- Cytoplasm
   C- Nuclear membrane
   D- Nucleus
3. A- Nuclear membrane
   B- Cytoplasm
   C- Nucleus
   D- Cell membrane
4. A- Cytoplasm
   B- Cell membrane
   C- Nucleus
   D- Nuclear membrane

Q.

What are cytosol??

Q.

Write a short note on chromatin.

Q.

Do bacteria have mitochondria?

Q. Chromosomes are made up of:

1. Carbohydrates and lipids
2. Proteins and Carbohydrates
3. Lipids and Nucleic Acids
4. Nucleic Acids and Proteins

Q.

Whats inside an animal cell?

Q.

Which among the following sequence is correct in describing genetic material present in the nucleus from the most basic to complex?

1. DNA -> Gene -> Chromosome -> Nucleus

2. Gene -> DNA -> Chromosome -> nucleus

3. Nucleus -> DNA -> RNA -> Chromosomes

4. none of the above

Q.

Question 37
Fill in the blanks with the terms given in the box below:

$\begin{array}{c}Nucleus,chromosomes,cellwall,cellmembrane,protoplasm,cytoplasm,ribosome,cellorganelles\end{array}$

The outermost layer of plant cells is the ___(a)___ beneath which is the___(b)___ . The term ___(c)___ refers to the jelly-like substance containing all the ___(d)___ . The___(e)___ contains thread-like structures called ___(f)___ .

Q. Choose the correct statement(s):
(i) Ribosomes are located on the chromosomes.
(ii) Cell is located in the nucleus.
(iii) Chloroplasts are located in the nucleolus.
(iv) Cell membrane surrounds the cell.

1. (iii) and (iv)
2. (i), (ii) and (iii)
3. (i) and (ii)
4. Only (iv)

Q.

"Nucleus acts as controller of a cell".Explain. [2 MARKS]

Q.

The dense, round body in the centre of the cell is known as:

1. Lysosome

2. Ribosome

3. Mitochondria

4. Nucleus

Q.

Chromatin Condenses only when the cell is about to divide.

1. True

2. False

Q.

State whether the following statements are true or false. If false, rewrite the correct form of the statement by changing the first and last word only:

Lysosomes is a part of the cell in which chromosomes are present.

1. True
2. False

Q. Is nucleus a cytoplasmic organelle?