Which of the following statements about signal transduction pathways is incorrec

Question

Which of the following statements about signal transduction pathways is incorrect? Select one: O a. The first messenger is typically a hormone or neurotransmitter O b. Cells have receptors at their surface that can bind first messengers. O c. Second messengers can be small water-soluble molecules or lipids in the membrane. O d. Activation of protein kinases causes degradation of enzymes to reduce their activity. e. Protein kinases phosphorylate specific serine or threonine residues occurring in the target enzyme. Which of the following is not a step in lipid digestion Select one: O O a. Emulsification of lipids in the intestine by bile salts. b. Release of pancreatic lipases. C. Beta-oxidation of fatty acids by brush-border lipases O d. Transport of free fatty acids into epithelial cells. O e. Resynthesis of triacylglycerols and incorporation into chylomicrons

Explanation / Answer

Which the following statement about signal transduction pathways is correct?

Answer:

correct Answer. option D

Activation of protein kinase cause degradation of the enzyme to reduce their activity.

Explanation:

Protein Kinase is an enzyme that catalyzes the transfer of phosphate groups from high-energy, phosphate-donating molecules to specific substrates. This process is known as phosphorylation.

These are not involved in degradation of the enzyme.

Which of the following is not a step in lipid digestion

Answer :

Option . E

First 3 option are involved in lipid digestion , but option E, involves in the resynthesis of Triacylglycerols is not part of lipid digestion

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