The basic unit of chitin is

• N-acetyl glucosamine

• glucose

• galactose

• fructose

Arachidonic acid is

• non-essential fatty acid

• essential fatty acid

• poly unsaturated fatty acid

• both 'b' and 'c'

What type of enzyme are present in lysosome

• ATPase

• Hydrolytic

• Lyase

• None of these

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

278.

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