I CIA Quiz Cellular and molecular Biology

What is the role of a ligand In cell communication?

• Transmitting electrical signals

• Acting as a signaling molecule

• Forming cell

Name the biological glue from the following

• Lamenin

• Fibronectin

• Peptidoglycon

• Collagen

cAMP binds to the ______________ sub unit of Protein kinases

During ageing wrinkles appear due the loss of ____________ in ECM fibres

Expand – CREB

Assertion (A) : During active state the GPCR is called hetero trimeric

Reason (R ) : During active state the GPCR and αßgunit of G proteins are bound together.

• Both A and R are True

• Both A and R are false

• A is true and R is False

• A is False and R is True

Assertion (A) : Collagen are the major constituent of extra cellular matrix.

Reason (R ) : The collagen fibres are formed of one double helical domain.

• Both A an R are True

• Both A and R are False

• A is true and R is false

• A is False and R is True

Calcium ion in the cell is a primary signaling molecules.

• True

• False

Expand DAG

Expand PIP2