Mitochondria

Q.

Are Mitochondria found in plant cells?

Q. Where are the oxysomes located?

1. Inner mitochondrial membrane
2. Outer mitochondrial membrane
3. Inner nuclear membrane
4. Outer nuclear membrane

Q. Label the parts of the mitochondria.

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

Q. Foldings of the inner membrane of mitochondria are called

1. sacs
2. cisternae
3. cristae
4. grana

Q.

Which organelle is known as the powerhouse of the cell? Give reasons in support of your answer.

Q. Which of the following cell organelles is enclosed by a double membrane?

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

Q. Which of the following statements regarding the permeability of the mitochondrial membrane is incorrect?

1. The outer membrane is permeable to all kinds of molecules
2. The enzymes of the electron transfer chain are embedded in the outer membrane
3. The inner membrane is highly convoluted forming a series of infoldings
4. The outer membrane resembles a sieve

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

1. matrix
2. cisternae
3. cristae
4. stroma

Q. Which one of the following has its own DNA?

1. Mitochondria
2. Dictyosome
3. Lysosome
4. Peroxisome

Q. Mitochondrial DNA is inherited through the ovum.

1. True
2. False

Q. Minimum number of mitochondria will be present in

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

Q. Which of the following is/are a function of the mitochondria ?

1. Mitochondria are responsible for the production of ATP

2. Amino acids are formed in mitochondria
3. Provides intermediates for the synthesis of biomolecules

4. All of the above

Q.

Mitochondria do not occur in

1. Ferns

2. Bacteria

3. Green algae

4. Brown algae

Q.

The carriers for the electron transport system are located ______

1. within the cytoplasm of a cell

2. on the cristae of mitochondria

3. within the matrix of mitochondria

4. within the Golgi apparatus

Q. If living cells were also found on another planet where there is no oxygen, then which cell organelle would most probably be absent ?

1. Cell Membrane
2. Ribosomes
3. Mitochondria
4. Chromosomes

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.

Both the membranes of the mitochondrion are:

1. Structurally different but functionally similar

2. Structurally as well as functionally different

3. Structurally similar but functionally different

4. Structurally as well as functionally similar

Q. More the mitochondria in a cell, less active it will be.

1. False
2. True

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

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

Q.

In the tail of the sperm, the mitochondria are

1. Spherical in shape

2. Spiral in shape

3. Elongated in shape

4. Clustered

Q. Which one of the following has its own DNA?

1. Mitochondria
2. Dictyosome
3. Lysosome
4. Peroxisome

Q.

Regarding the assertion and reason; choose the correct option.

Assertion [A]: Mitochondria are also called "The Powerhouse of the Cell” .
Reason [R]: Significant role of Mitochondria is to produce ATP .

1. Assertion [A] is True and Reason [R] is False.

2. Reason [R] is True and Assertion [A] is False.

3. Assertion [A] is True and Reason [R] is True and is a correct explanation of [A].

4. Assertion [A] is True and Reason [R] is True but is not a correct explanation of [A].