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TLS Online TPP Program

#Question id: 10758

The component of the soil water potential is hydrostatic pressure  (ψp) ,

#Unit 6. System Physiology – Plant
  1. For wet soils, ψp is very close to zero and For dry soils, ψp decreases and can become quite negative
  2. For wet soils , ψp is above to zero and For dry soils, ψp decreases and can become quite negative
  3. For wet soils , ψp is negative and For dry soils , ψp increases and can become positive
  4. For wet soils , ψp is positive and for dry soils , ψp increases and can become also positive  
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TLS Online TPP Program

#Question id: 1123

#Unit 4. Cell Communication and Cell Signaling

Epinephrine can be what kind of signaling molecule?

a. autocrine      b. direct contact  c. endocrine d. paracrine
TLS Online TPP Program

#Question id: 1124

#Unit 4. Cell Communication and Cell Signaling

Which of the following is (are) intracellular second messengers?

a. Ca2+                        b. cAMP          c. epinephrine             

d. protein kinase A      e. protein kinase C
TLS Online TPP Program

#Question id: 1125

#Unit 4. Cell Communication and Cell Signaling

Examples of G protein–coupled receptors include

a. rhodopsin receptor.             b. β-adrenergic receptor.

c. insulin receptor.                   d. acetylcholine receptor.
TLS Online TPP Program

#Question id: 1126

#Unit 4. Cell Communication and Cell Signaling

Which of the following statement(s) is (are) true of the α subunit of a G protein?

a. It physically associates with the receptor.              

b. It binds GDP.

c. It binds GTP.                     

d. It is a transmembrane protein.
TLS Online TPP Program

#Question id: 1127

#Unit 4. Cell Communication and Cell Signaling

Which of the following steps does not occur after acetylcholine binds to the muscarinic acetylcholine receptor in heart muscle cells?
TLS Online TPP Program

#Question id: 1128

#Unit 4. Cell Communication and Cell Signaling

During the epinephrine stimulated conversion of glycogen to glucose 1-phosphate, which of the following steps involves protein phosphorylation?

a. inactivation of glycogen synthase               b. activation of protein kinase A

c. activation of adenylyl cyclise                      d. activation of glycogen phosphorylase