For Each of the Following Sentences, Fill in the Blanks

Essay

For each of the following sentences, fill in the blanks with the best word or phrase selected from the list below.Not all words or phrases will be used; each word or phrase should be used only once.
$\begin{array}{lll}\text { adenylyl cyclase } & \text { endoplasmic reticulum } & \text { nuclear } \\\text { average } & \text { extracellular } & \text { peroxisome } \\\mathrm{Ca}^{2+} & \text { high } & \text { phospholipase C } \\\text { calmodulin } & \text { intracellular } & \text { protein kinase A } \\\text { colorful } & \text { low } & \text { protein kinase C }\end{array}$

Ca²⁺ can trigger biological effects in cells because an unstimulated cell has an extremely __________ concentration of free Ca²⁺ in the cytosol, compared with its concentration in the __________ space and in the __________ creating a steep electrochemical gradient.When Ca²⁺ enters the cytosol, it interacts with Ca²⁺-responsive proteins such as __________ which also binds diacylglycerol, and __________ which activates CaM-kinases.