Mitochondria

Q.

Question 1
Can you name the two organelles we have studied that contain their own genetic material?

Q.

Who discovered mitochondria?

Q. What will happen in a cell if it's nucleus is removed? Give reasons also.

Q.

Organelle other than nucleus, containing DNA is

1. Endoplasmic reticulum

2. Golgi apparatus

3. Mitochondria

4. Lysosome

Q. Which organelle is not surrounded by a membrane?

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

Q. What is a matrix?

Q.

Define cristae. State its function.

Q.

Why are mitochondria able to make their own proteins?

Q.

Which of the following organelles is enclosed in a single membrane?

1. Nuclei

2. Lysosomes
   

3. Chloroplasts

4. Mitochondria
   

Q. The infoldings of the inner membrane of mitochondria are called ______.

1. Grana
2. Stroma
3. Cristae
4. Lumen

Q.

The main arena of various activities of a cell is:

1. Plasma Membrane

2. Mitochondrion

3. Cytoplasm

4. Nucleus

Q.

Which organelle is the "power plant" of eukaryotic cell. Write in brief its functions.

Q.

Which of the following feature is not similar in mitochondria and chloroplast?

1. Both are present in eukaryotic cells

2. Both have their own genetic material

3. Both are present in eukaryotes

4. Both are present in animal cells

Q.

The cell organelle that helps in respiration of the cell is:
(a) Mitochondria
(b) Lysosome
(c) Ribosome
(d) Centrosome

Q.

The control center of a cell is

1. nucleus

2. mitochondrion

3. cytoplasm

4. lysosome

Q. The organelles or components absent in animal cell but present in plant cell are

वह कोशिकांग या घटक कौनसे हैं जो जंतु कोशिका में अनुपस्थित होते हैं परंतु पादप कोशिका में पाये जाते हैं?

1. Centriole and cell wall
   
   तारककेन्द्र व कोशिका भित्ति
   
2. Plastids and cell membrane
   
   प्लैस्टिड व कोशिका झिल्ली
   
3. Centriole and vacuoles
   
   तारककेन्द्र व रसधानी
   
4. Plastids and cell wall
   
   प्लैस्टिड व कोशिका भित्ति
   

Q.

Name the cell organelle in which following structures are present:

(a) Cristae;

(b) Stroma;

(c) Centriole;

(d) Chromosome

Q.

The structures that are formed by stacking of organized flattened membranous sacs in the chloroplasts are?

1. Cristae

2. Stroma

3. Stroma lamellae

4. Grana

Q.

Mitochondria are able to make their own proteins.

1. Ribosome

2. Lysosome

Q.

Write a short note on mitochondria, ribosome and plastids

Q.

Question 5
Which organelle is known as the powerhouse of the cell? Why?

Q.

What cell organelle is responsible for release of energy as ATP ?

Q. A, B, C and D are basic parts of a cell.

• A carries thread like structures which contains genetic information.
• B uses glucose and oxygen to produce energy.
• C controls the movement of substance into the cell and
  out of the cell.
• D is a transparent, jelly like substance.

What are A, B, C and D?

1. A- Mitochondria, B- Endoplasmic reticulum, C- Golgi complex, D- Ribosome.
2. A- Chloroplast, B- Golgi complex, C-Vacuole, D- Cytoplasm.
3. A- Nucleus, B- Mitochondria, C- Plasma membrane, D- Cytoplasm.
4. A- Mitochondria, B- Ribosome, C- Cell wall, D- Lysosome.

Q.

Why mitochondria is called power house of the cell? Who discovered mitochondria

Q.

The infoldings of the inner membrane of mitochondria is referred to as ______.

1. Grana

2. Stroma

3. Lumen

4. Cristae

Q.

What is full form of ATP

Q.

Name the following :

(a) Kitchen of a cell;

(b) Power house of cell.

Q. Mitochondria produces energy in the form of__________.

1. ATP
2. ADP
3. ATP and ADP
4. Organic molecules

Q.

Give a scientific reason for the following:

Inner membrane of is deeply folded.

Q.

What is something strange about the cell organelle mitochondria?