Nucleus in Cell

Q.

Where are chromosomes found in a cell? State their function.

Q. What is the function of nucleus in a cell ?

Q. Which part of a cell controls all the activities of the cell ?

Q.

Why is the nucleus referred to as the brain of the cell?

Q. A security guard of an apartment allows only the residents, relatives and staff members to enter inside the building. Which cellular component's function is analogous (similar) to the scenario stated above?

1. Organelles
2. Cytoplasm
3. Cell membrane
4. Nucleus

Q.

What is the function of chromosomes ?

Q.

Where are chromosomes found in a cell? State their function.

Q.

The part of a cell which plays a role in inheritance is :

1. Nucleus

2. Cytoplasm

3. Mitochondria

4. Plasma membrane

Q.

What are chromosomes? List their two functions.

Q.

What does the nucleus do in an egg cell?

Q.

In eukaryotic cell a true nucleus is absent.

1. True

2. False

Q. Question 3 (b)
Write short notes on the following.
(b) Nucleus

Q.

Read the following statements and write the appropriate term against each statement.

A. I control the functions of a cell. Who am I? _______

B. I am like a policeman. I do not allow anything and everything to get in and out of the cell. Who am I?______

C. I transfer characters from parents to offspring. Who am I? ______

Q. Question 9
Choose the correct statement:

(a) Genes are located in the chromosomes.
(b) Cell is located in the nucleus.
(c) Chromosomes are located in the nucleolus.
(d) Cell membrane surrounds the nucleus.

Q.

Every chromosome contains one molecule of DNA.

1. True
2. False

Q.

What is the importance of chromosomes in our body?

Q.

Nucleus is the largest organelle in the eukaryotic cell.

1. True
2. False

Q.

Identify the figure and label A, B, C and D. [3 MARKS]

Q.

A B, C, and D are the basic parts of all the cells. Part A contains thread-like structures called E which transfer the characteristics from parents to their offspring. Part B uses glucose and oxygen to produce energy whereas part C controls the movement of substances 'into the cell' and 'out of the cell'. Part D is a transparent, jelly-like material. What could A, B, C, and D be?

Q. is the jelly-like substance between the nucleus and the cell membrane.

1. Vacuole
2. Cytoplasm
3. Ribosome
4. Mitochondria

Q. If there are 46 chromosomes in a cell, there will be 23 chromatin fibres inside the nucleus during interphase.
True or false

Q. Which is the largest floating body generally in the centre of a cell ?

Q. Question 7
Where are chromosomes found in a cell? State their function.

Q.

How do cells communicate?

Q.

Which among the following will you find in a eukaryotic nucleus?

1. Nuclear membrane

2. Chromatin

3. Nucleolus

4. All of the above

Q. State whether the following statements are true or false.

Statement 1: Nucleus is absent in animal cell.
Statement 2: Chromosomes contain the genetic information of an individual.

1. Statement 1: True; Statement 2: False
2. Statement 1: True; Statement 2: True
3. Statement 1: False; Statement 2: False
4. Statement 1: False; Statement 2: True

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

1. Ribosome
2. Mitochondria
3. Nucleus
4. Lysosome

Q.

A, B, C and D are basic parts of the cell. The part A contains thread like structures called E which transfer the characteristics from parents to their off Springs. The part B used glucose and oxygen to produce energy whereas part C controls the movement of substances into the cell and out of the cell. The part D it's a transparent, jelly like material.

What could be A, B, C, D and E.?

Q.

Define the following

1. Cell 2. Cell Organelle 3. Vitellogenesis 4. Nucleus

Q.

What does the image depicts? [3 MARKS]

Define cell. Who gave the cell theory?