Question

help with 7-10

Question 7 1 pts Phosphorylation of kinases in one location can result in activation, while phosphorylation in another location on the same protein can result in deactivation of the enzyme. True False Question 8 2 pts Dephosphorylation, or removal of a phosphate group, is accomplished with the help of a both kinases and phosphatases neither kinases not phosphatases phosphatase kinase Question 9 1 pts Select all of the following that act as second messengers. D DAG CAMP Calcium ions Question 10 2 pts In a signaling cascade, a signal binding to a receptor often results in the activation of many proteins. True KFalse

Answer 1

7) This statement is false.

Explanation:

As one kinase molecule act on many proteins and amplify many target proteins.

The kinases are activated by phosphorylation that initiate many signaling cascades. Thus it is responsible for phosphorylation that activates a cascade of different amino acids.


8) Answer is: phosphatases

Explanation:

Dephosphorylation, or removal of a phosphate group, is accomplished with the help of phosphatases. The kinases are activated by phosphorylation that initiate many signaling cascades.


9) Answer is: all of them, DAG, cAMP, calcium.

Explanation:

Second messengers are intracellular signaling molecules which are released by the cell when extracellular signaling molecules whuch are called as first messengers acts.

Examples of second messenger molecules are cyclic AMP(cAMP), cyclic GMP, inositol trisphosphate, diacylglycerol( DAG), and calcium.


10) This statement is true.

Explanation:

Signal transduction cascades amplify the signalz that producing multiple signals for every single receptor. If signaling pathway amplified several times then it results in a signaling cascade.