The importance of a series of activated enzymes in a signaling pathway is a. Red
ID: 3474857 • Letter: T
Question
The importance of a series of activated enzymes in a signaling pathway is a. Redundancy b. Multiple control points c. Amplification of original chemical signal d. Multiple points for intersection of different signal transduction pathways e. Ease of turning off signal within the target cell NSAIDs like aspirin or ibuprofen act reduce prostaglandin formation by blocking or reducing the activity of a. Phospholipase A b. Phospholipase C c. Lipoxygenase enzymes d. Cyclooxygenase enzymes e. Phosphodiesterase Which of the following is a signaling protein activated by binding of calcium? a. Calmodulin b. Diacylglycerol (DAG) c. JAK d. Cyclic AMP e. STAT What is the importance of calcium pumps in the cell membrane or endoplasmic reticulum? a. reduce activity along signaling pathways when chemical messengers no longer activate the receptors b.To increase activity along signaling pathways when chemical messengers no longer activate the receptors c. To insure that therExplanation / Answer
21. Action potentials are carried on the
Ans. C. A and C
They are carried along the dendrites and axons in electrical properties. Once the signal reaches the end of axon, a neurotransmitter is released.
20. Ganglia are the structures in the
Ans. B. PNS
The nervous system has 2 components. The peripheral nervous system ( PNS ) and central nervous system ( CNS ).
The PNS consists of the nerves and Ganglia. Ganglia is a cluster of nerve cells.
19. What is the importance of calcium pumps in cell membrane or endoplasmic reticulum?
Ans. D. To reduce cytosolic calcium levels in order to depolarised the membrane.
18. Which of the following is a signaling protein activated by binding of calcium?
Ans. A. Calmodulin
Binding of calcium activates calmodulin. Once bound to calcium the calmodulin acts as a part of calcium signal transduction pathway.
17. Mosaics like aspirin or ibuprofen act reduce prostaglandin formation by blocking or reducing the activity of
Ans. D. Cyclooxygenase enzymes
By blocking or reducing the activity of cyclooxygenase enzymes these NSAIDs treats pain in the central nervous system but not much in the rest of the body.
16. The importance of a series of activated enzymes in a signaling pathway is?
Ans. C. Amplification of original chemical signal
These enzymes assign the proteins a code which instruct the cell to do work such as divide or grow.
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