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Cell : The Unit of Life

Multiple Choice Questions

311.

In which method of transport, in plasma membrane does not require carrier molecule?

Active transport
Facilitated diffusion
Simple diffusion
Na⁺ - K⁺ pump

312.

Which structure is present in both prokaryotic and eukaryotic plant cells?

Cell wall
Nucleus
Chloroplast
Mitochondria

Short Answer Type

313.

What is telomere? State its function.

314.

What is riophorins?

Multiple Choice Questions

315.

What is mitoplast?

Membraneless mitochondria
Another name of mitochondria
Mitochondria without outer membrane
Mitochondria without inner membrane

316.

Thylakoids occur inside

mitochondria
chloroplast
Golgi apparatus
endoplasmic reticulum

317.
Mitochondria are semiautonomous as they possess

DNA

DNA and RNA

DNA, RNA and ribosomes

Protein

DNA, RNA and ribosomes

Each mitochondrion is a double membrane bound structure with the outer membrane and the inner membrane dividing its lumen distinctly into two aqueous compartments, ie, the outer compartment and the inner compartment. The inner compartment is called the matrix. The matrix possesses single circular DNA molecule, a few RNA molecules, ribosomes (70S) and the components required for the synthesis of proteins.