Organelles

Q.

Differentiate between rough and smooth endoplasmic reticulum.

Q.

It is said that the protoplasm cannot be analysed chemically. Why ?

Q.

Write names on cell organelles.

Q.

What is the difference between an organ and an organelle ?

Q. Which of the following statement(s) is/are correct?
I. Unicellular organisms are incapable of independent existence.
II. Unicellular organisms cannot perform the essential functions of life.
III. Anything less than a complete structure of a cell does not ensure independent living.
IV. Cell is the fundamental structural and functional unit of all living organisms.

1. II and III
2. I and II
3. IV and II
4. III and IV

Q.

What are the two organelles have their own DNA and ribosomes?

1. Mitochondria and plastids

2. Chloroplast and plastids

3. Golgi complex and plastids

4. Chloroplast and mitochondria

Q.

Which of the following pair of organelles does not contain DNA?

1. Nuclear envelope and Mitochondria.

2. Mitochondria and Lysosomes

3. Chloroplast and Vacuoles.

4. Lysosomes and Vacuoles.

Q.

Can you name the two organelles we have studied that contains their own genetic material.

Q.

Given below are the sketches of two types of cells A and B

(a) Which one of these is a plant cell? Give reason in support of your answer.
(b) List the cell structures which are common to both the types.
(c) Name the structures found only in plant cells and those found only in animal cells.

Q. Define structure and function of rough and smooth endoplasmic reticulum.

Q. How are lysosomes linked to Golgi bodies

Q.

Which cell organelle controls most of the activities of the cell?

Q.

Explain what a cell membrane is, with its types.

Q. What is the significance of pores present on the nuclear membrane?

Q.

Polymorphic cell organelle is

1. Ribosome

2. Centrosome

3. Chromosome

4. Lysosome

Q.

Which of the following is absent in a plant cell?

1. Vacuole

2. Centriole

3. Cell membrane

4. Mitochondria

Q.

Write the name of the the living part of a cell.

Q.

What is tonoplast and where is it found?

Q. Explain the organisation of a multicellular organism?

Q. Which of the following cell organelles regulates the entry and exit of molecules to and from the cell?

1. Lysosomes

2. Golgi bodies
3. Cell membrane
4. Mitochondria

Q. Are cells living or non-living?

Q.

Name the blank or empty structures in the cytoplasm?

Q.

Define-

A. protoplasm

B. nucleoplasm

Q.

What is the difference between organ and organelle?

Q.

How is a prokaryotic cell different from a eukaryotic cell?

Q.

Which one of these structures is not present in an animal cell?

1. Nucleus

2. Cell wall

3. Cell membrane

4. Cytoplasm

Q.

Are lipids synthesized in smooth endoplasmic reticulum?

Q. The membrane of a vacuole is called

1. Plasma membrane
2. Nucleoid
3. Permeable membrane
4. Tonoplast

Q.

Why do cells need to be different in shapes and sizes? Can you give examples?

Q. Differentiate between the following pairs of terms:
(b) Nucleolus and nucleus.