Mitochondria

Q.

Write the function of mitochondria?

Q.

Name two cell organelles that are double membrane-bound. What are the characteristics of these two organelles? State their functions and draw labelled diagrams of both.

Q. Which of the following is/are not found inside mitochondrial matrix?

1. Single stranded DNA
2. 80S ribosomes
3. RNA
4. 70S ribosomes

Q.

Do plants have mitochondria?

Q.

What are grana and stroma?

Q.

Which of the following statements regarding mitochondria is incorrect?

1. An Outer membrane is permeable to monomers of carbohydrates, fats and proteins.

2. Enzymes of electron transport are embedded in the outer membrane.

3. Inner membrane is convoluted with infoldings.

4. Mitochondrial matrix contains a single circular DNA molecule and ribosomes.

Q.

How is glucose converted to ATP?

Q. Match the following columns and select the correct option:

Column - I	Column - II
(a) Smooth endoplasmic reticulum	(i) Protein synthesis
(b) Rough endoplasmic reticulum	(ii) Lipid synthesis
(c) Golgi complex	(iii) Glycosylation
(d) Centriole	(iv) Spindle formation

1. $\left(a\right)-\left(ii\right),\left(b\right)-\left(i\right),\left(c\right)-\left(iii\right),\left(d\right)-\left(iv\right)$
2. $\left(a\right)-\left(iii\right),\left(b\right)-\left(i\right),\left(c\right)-\left(ii\right),\left(d\right)-\left(iv\right)$
3. $\left(a\right)-\left(iv\right),\left(b\right)-\left(ii\right),\left(c\right)-\left(i\right),\left(d\right)-\left(iii\right)$
4. $\left(a\right)-\left(i\right),\left(b\right)-\left(ii\right),\left(c\right)-\left(iii\right),\left(d\right)-\left(iv\right)$

Q.

Which of the following statements regarding mitochondrial membrane is not correct?

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. Why do Mitochondria have their own DNA ?

Q. Glycolysis takes place in

1. All cells
2. Only eukaryotic cells
3. Muscle cells
4. Nerve cells.

Q.

What Is the Difference Between Grana and Granum?

Q. Oxysomes or F${}_0$-F${}_1$ particles occur on

1. inner to the endoplasmic reticulum surface
2. outer mitochondrial surface
3. inner mitochondrial membrane
4. on the endoplasmic reticulum surface

Q.

What are rackers particles?

Q.

Name the organelle that is associated with aerobic respiration?

Q.

What is a good analogy for mitochondria?

Q. Read the following statements and find out the incorrect statements.

a. Ultimately all the food that is respired for life processes comes from photosynthesis.

b. The energy released by oxidation in respiration is directly used for the life processes.

c. The carbon skeleton produced during respiration is used as precursors for biosynthesis of other molecules in cell.


d. Plants, unlike animals, have no specialised organs for gaseous exchange but they have stomata and lenticels for this purpose.

e. During oxidation within a cell, all the energy contained in respiratory substrates is released free into the cell in a single step, which is trapped as chemical energy in the form of ATP.

1. c and e
2. a and b
3. b and e
4. b and d

Q.

What is another word for mitochondria?

Q.

The cell organelle which helps in the synthesis of fats in adipose tissue is

1. smooth endoplasmic reticulum

2. rough endoplasmic reticulum

3. mitochondria

4. adipocytes

Q. Which of the following statements regarding mitochondria is incorrect ?

1. Outer membrane is permeable to monomers of carbohydrates, fats and proteins
2. Enzymes of electron transport are embedded in outer membrane
3. Inner membrane is convoluted with infoldings
4. Mitochondrial matrix contains single circular DNA molecule and ribosomes

Q.

Which of these is not related to the endoplasmic reticulum?

1. It behaves as a transport channel for proteins between nucleus and cytoplasm

2. It transports materials between various regions in the cytoplasm

3. It can be the site of energy generation

4. It can be the site for some biochemical activities of the cell

Q.

What Is the Role of Mitochondria in Human Sperm?

Q.

How does respiration help in the release of energy?

Q.

Mitochondria are self replication organelles as they have

1. Oxysomes

2. Thylakoids

3. Ribosomes

4. DNA

Q.

$F_0-F_1$ particles participate in the synthesis of ...

Q.

How many thylakoids are present in each granum in chloroplast?

1. 5 - 10

2. 100 - 200

3. 20 to 50

4. 10 to 100

Q.

Extranuclear inheritance is a consequence of presence of genes in

1. Mitochondria and chloroplast

2. Endoplasmic reticulum and mitochondria

3. Ribosomes and chloroplast

4. Lysosomes and ribosomes

Q.

Read the assertion and reason carefully to mark the correct option in question.

Assertion: Chloroplasts, mitochondria and peroxisomes are not considered as a part of the endomembrane system.

Reason: Functions of chloroplasts, mitochondria and peroxisomes are not coordinated with ER, Golgi complex, lysosomes and vacuoles.

Q.

Question 36

Justify the statement, 'Mitochondria are power houses of the cell'.

Q.

The structures of the cell, carrying out life functions are called:

1. Organs

2. Microtubules

3. None

4. Organelles