When chemical messages (e.g. hormones or neurotransmitters) bind to plasma membr

Question

When chemical messages (e.g. hormones or neurotransmitters) bind to plasma membrane receptors the message (the information carried by the message molecule) reaches the cytoplasm by: a) the receptor transports the chemical message across the membrane b) the receptor itself moves from the plasma membrane to the cytoplasmic target c) the receptor undergoes a conformational change resulting in a change in the activity of the receptor d) it depends upon which receptor is being considered Synthesis phospholipid (P-lipid) bilayer for eukaryotic cells occurs in the: a) plasma membrane b) SER c) mitochondria d) RER e) lysosomes The synthesis membrane proteins for eukaryotic cells is found in: a) plasma membrane b) SER c) mitochondria d) RER e) lysosomes Which structure has a large number of hydrolytic (digestive) enzymes for eukaryote cells: a) plasma membrane b) SER c) mitochondria d) RER e) lysosomes What is the product of glycolysis: a) CO_2 b) citric acid c) ac

Explanation / Answer

Answers: -

23.option "c"receptor undergoes conformational change.

24.option "b"-SER.

EXPLANATION: -Smooth ER, is not associated with ribosomes, and its functions differ.

**The smooth ER is involved in the synthesis of lipids, including cholesterol and phospholipids, which are used in the production of new cellular membrane.

25.Option "d"-RER.

EXPLANATION: -

Ribosomes attached to RER are able to synthesize plasma membrane proteins and further transport to plasma membrane via endomembrane system.

26.option "-e"-lysosomes.

Explanation-:-

**Lysosomes are membrane-enclosed compartments filled with hydrolytic enzymes that are used for the controlled intracellular digestion of macromolecules.

**They contain about 40 types of hydrolytic enzymes, including proteases, nucleases, glycosidases, lipases, phospholipases, phosphatases, and sulfatases.

27.Option "e"-pyruvic acid.

Explanation: -

**The net end products of glycolysis are two Pyruvate, two NADH, and two ATP

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