In which part of mitochondria does ATP synthesis occur?

• F₁

• F₀

• Cristae

• Inner membrane of mitochondria

Phospholipids are

• amphipathic

• hydrophobic

• amphibolic

• none of these

In bacteria respiration occurs in

• cytoplasmic membrane

• mitochondria

• nuclear membrane

• endoplasmic reticulum

• Wallace

• Virchow

• Schleiden

• None of these

Maximum absorption of light occurs in the region of

• 400 - 700 nm

• 700 - 900 nm

• 1000 - 1200 nm

• 1500 - 2000 nm

Assertion : Pili are tubular structures present in bacteria which help in conjugation.

Reason : Formation of pili is controlled by F⁺  or fertility factor.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false

• If both assertion and reason are false

Assertion : In opposite phyllotaxy two leaves are borne on the opposite sides of a single node.

Reason : Opposite phyllotaxy is seen in China rose and Oleander.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false

108.

Which of the following organelles contain DNA?

(i) Mitochondria (ii) Chloroplasts (iii) Golgi bodies (iv) Ribosomes

• (i) and (ii)

• (ii) and (iii)

• (i) only

• (iv) only

Assertion: Mitochondria and chloroplasts have their own genome.

Reason: Endoplasmic reticulum and Golgi body are the cell organelles which have their own DNA.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false.

• If both assertion and reason are false.

Who invented electron microscope?

• Janssen

• Edison

• Knoll and Ruska

• Landsteiner