Mitochondria

Q.

Why are mitochondria semi autonomous?

Q.

Which of the following is a part of the endomembrane system of a eukaryotic cell?

1. Mitochondria

2. Golgi complex

3. Chloroplasts

4. Peroxisomes

Q.

Which one of the following has its own DNA?

1. Peroxisome

2. Dictyosome

3. Mitochondria

4. Lysosome

Q. Statement A: The number of mitochondria in a cell does not correspond to the function of the cell. Statement B: Mitochondria are common to both plant and animal cells.

1. Statement A is correct, statement B is incorrect.
2. Statement B is correct, statement A is incorrect.
3. Both the statements A and B are correct.
4. Both the statements A and B are incorrect.

Q.

Robert Brown discovered

1. Nucleus

2. Mitochondria

3. Cell wall

4. Nucleolus

Q. Minimum number of mitochondria will be present in

1. meristematic cells
2. cardiac cells
3. mature RBCs
4. liver cells

Q.

One turn of the citric acid cycle produces

1. 2 NADH, 2 FADH2, 2 ATP

2. 3 NADH, 1 FADH2, 1 ATP

3. 1 NADH, 3 FADH2, 2 ATP

4. 3 NADH, 2 FADH2, 1 ATP

Q.

What types of Eukaryotic cells contain chloroplasts?

Q.

Are there mitochondria in a prokaryotic cell?

Q.

Cristae are associated with which of the following?

1. Endoplasmic reticulum

2. Mitochondria

3. Protoplasm

4. Cytoplasm

Q.

Under normal conditions, as electrons flow down the electron transport chain of the mitochondria:

1. NADH and FADH2 are oxidized

2. the electrons lose free energy

3. an electrochemical gradient is formed

4. all of the above

Q.

In metabolic processes of cell respiration and photosynthesis, prosthetic groups such as heme and iron – sulfur complexes are encountered. What do they do?

1. donate electrons

2. act as oxidizing agents

3. transport protons within the mitochondria and chloroplasts

4. both oxidize and reduce during electron transport

Q.

The chemiosmotic theory for photophosphorylation was given by

1. Arnon

2. Anderson

3. Arnold

4. P. Mitchell

Q.

The powerhouse of the cell is

1. Ribosomes

2. Mitochondria

3. Golgi bodies

4. Endoplasmic reticulum

Q.

Mitochondria do not occur in

1. Green algae

2. Bacteria

3. Brown algae

4. Ferns

Q.

The carriers for the electron transport system are located ______

1. on the cristae of mitochondria

2. within the Golgi apparatus

3. within the cytoplasm of a cell

4. within the matrix of mitochondria

Q.

Energy equivalent of NADH is how many number of ATP molecules?

1. 2

2. 38

3. 3

4. 6

Q.

Name two cell-organelles that are double membrane bound. What arethe

characteristics of these two organelles? State their functions anddraw labelled

diagrams of both.

Q. The infoldings in mitochondria are known as

1. cristae
2. matrix
3. cisternae
4. thylakoids
5. grana

Q. Both bacteria and mitochondria can divide by

1. binary fission
2. budding
3. sporulation
4. meiosis

Q. The organelle in which aerobic respiration occurs in a cell is

1. ribosome
2. endoplasmic reticulum
3. dictyosome
4. mitochondrion

Q. Mitochondrial DNA is inherited through the ovum.

1. True
2. False

Q. Which of the following pairs of organelles does not contain DNA?

1. Nuclear envelope and mitochondria
2. Mitochondria and lysosome
3. Chloroplast and vacuoles
4. Lysosomes and vacuoles

Q. is mitochondria a membrane bound organelle in prokaryotic cells

Q. The inner membrane of mitochondria

Q.

The main arena of various types of activities of a cell is

1. Nucleus

2. Mitochondrion

3. Plasma membrane

4. Cytoplasm

Q. Label the parts of the mitochondria.

1. Inner membrane
2. Matrix
3. Cristae
4. Outer membrane

Q. Choose the correct statements with reference to reproduction in paramecium
(a) Micronucleus divides by mitosis and micronucleus by amitosis
(b) Micronucleus is polyploid and macronucleus is diploid
(c) After karyokinesis, parent cell divides into two daughter cells, anterior proter and posterior opisthe
(d) It undergoes transverse binary fission during favourable condition.

1. (b), (c) and (d)
2. (a), (b) and (d)
3. (a), (c) and (d)
4. (a), (b) and (c)

Q. Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?

1. Ribosome
2. Chloroplast
3. Mitochondrion
4. Lysosome

Q.

ETC and TCA enzymes occurs in:

1. Endoplasmic reticulum

2. Ribosomes

3. Mitochondria

4. Cytoplasm