Cell Membrane

Q.

What are the functions of DNA?

Q. Explain the 3 types of osmotic solutions.

Q. Why there is no cell wall in animal cells

Q.

Which of the following is a living semi-permeable membrane?

1. Fish bladder

2. Parchment paper

3. Egg membrane

4. Cellophane

Q. Name the outermost layer of an animal cell.

Q.

How can organelles be separated from cell homogenate?

Q. What controls the flow of substances in and out of a cell ?

Q.

What is the most important part of a cell?

Q. In which part of cell, most of the chemical reactions take place?

Q. Choose the correct statements.
(i) Cell wall is present in both plant and animal cells.
(ii) Cell membrane is present only in plant cells.
(iii) Cell membrane is semi permeable.
(iv) Cell wall is mainly composed of cellulose.

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

Q. Cytoplasm is the jelly-like semi-fluid matrix found inside a cell. It is composed of

1. water
2. micromolecules and macromolecules
3. all of the above
4. cell organelles

Q. Cytoplasm is the jelly-like semi-fluid matrix found inside a cell. It is composed of

1. cell organelles
2. water
3. all of the above
4. micromolecules and macromolecules

Q. Question 39
Why do plant cells have an additional layer surrounding the cell membrane? What is this layer known as?

Q.

Cytoplasm is the jelly like semifluid found inside a cell and is composed of

1. Cell organelles

2. Water

3. micromolecules and macromolecules

4. All of the above

Q.

Nuclear membrane is present in ________________ .

1. Eukaryotic cell

2. Plant cell

3. All of these

4. Animal cell

Q. The door to your house is like the ___ of a cell membrane?

1. receptor protein
2. recognition protein
3. gated channel
4. phospholipid bilayer

Q. State the difference between Cytoplasm and protoplasm.

Q. Cell sap is a fluid found in the plant vacuoles.

1. True
2. False

Q.

The cytoplasm of a cell has many tiny structures in it called___.

Q. If there is no net movement of water (solvent) between two solutions separated by a semipermeable membrane, the solutions are said to be _____ to each other

1. hypotonic
2. hypertonic
3. isotonic
4. dilute

Q.

What organ is similar to cell membrane?

Q.

Cell membrane is also called:

1. Plasmalemma

2. Cytoplasm

3. Nucleolus

4. Cell wall

Q. Cytoplasm is the jelly-like semi-fluid matrix found inside a cell. It is composed of

1. cell organelles
2. all of the above
3. water
4. micromolecules and macromolecules

Q.

Part of the cell between the plasma membrane and nucleus is __________________.

Q.

The matrix inside nucleus is known as - _____________

Q. Question 14
Of the following parts of a cell listed below, name the part that is common to plant cell, animal cell and a bacterial cell.

(a) chloroplast
(b) cell wall
(c) cell membrane
(d) nucleus

Q.

Question 19
Under a microscope, Paheli observes a cell that has a cell wall but no distinct nucleus. The cell that she observes is

(a) a plant cell
(b) an animal cell
(c) a nerve cell
(d) a bacterial cell

Q.

All cells in our body maintain a definite shape by the help of:

1. Cell membrane

2. Cell organelles

3. Nuclear membrane

4. Extra cellular matrix

Q.

Question 36
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 offsprings. Who am I? ___

Q.

What are the main elements of protoplasm?