PLEASE ANSWER ALL OF THEM 1)The difference in sodium concentrations contributes

Question

PLEASE ANSWER ALL OF THEM

1)The difference in sodium concentrations contributes to a difference in electrical charges across the plasma membrane called the [BLANK], and changes in the electrical changes cause the cell to respond.

2)The signaling molecule binds to a specific location on the receptor protein called the [BLANK].

3)Usually when a protein is phosphorylated by a kinase, it becomes acive, and switched on. When the protein is dephosphorylated, it is switched off and becomes inactive.

True

False

4)The stress response can trigger many activities in the body and have wide-spread effects.Describe two examples.

Explanation / Answer

1) The difference in sodium concentrations contributes to a difference in electrical charge across the plasma membrane called the MEMBRANE POTENTIAL, and changes in the electrical charges cause the cell to respond, by changing the resting membrane potential.

2) The signaling molecule binds to a specific location on the receptor protein called the Ligand-binding active site or pocket.

3) Usually when a protein is phosphorylated by a kinase, it becomes acive, and switched on. When the protein is dephosphorylated, it is switched off and becomes inactive-this is true for most of the cases,for example-glycogen phosphorylase.But the opposite case also occurs,for example-glycogen synthase.

4) The stress response have wide-spread effects in our body like-increased risk of health problem,phychiatric diseases,eating disorders,sleeping difficulties,digestive problems,weight problems,thinking and memory problems,depression and anxiety etc.

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