Q.1
The Protein-tyrosine kinases phosphorylate the ______________ residues.
  • a) adenine
  • b) cytosine
  • c) tyrosine
  • d) chymosin
Q.2
How many types of protein-tyrosine kinases are there?
  • a) 1
  • b) 2
  • c) 3
  • d) 4
Q.3
The cytoplasmic protein-tyrosine kinases are activated indirectly by the extracellular signals.
  • a) True
  • b) False
Q.4
Bringing 2 kinase domains in close contact allows for ___________________
  • a) trans-autophosphorylation
  • b) cis-autophosphorylation
  • c) inactivation of one domain
  • d) inactivation of both domains
Q.5
When the levels of glucose drop, alpha-cells in the pancreas secrete ____________________
  • a) glucose
  • b) glucagon
  • c) starch
  • d) pancreatic fluid
Q.6
Which cells release insulin when glucose levels elevate in the body?
  • a) zeta cells
  • b) alpha cells
  • c) gamma cells
  • d) beta cells
Q.7
Which of the following synthesis is decreased (or stopped) when the blood glucose levels are high?
  • a) gluconeogenesis
  • b) triglyceride
  • c) glycogen
  • d) glucagon
Q.8
Diabetes Mellitus is caused by defects in insulin signaling.
  • a) True
  • b) False
Q.9
Diabetes Mellitus type II is caused due __________________________
  • a) inability to produce insulin
  • b) insulin resistance
  • c) low glucose levels
  • d) low lactose levels
Q.10
How many subunits does the Ras protein contain?
  • a) 1
  • b) 2
  • c) 3
  • d) 4
Q.11
The Etr1 gene in plants encodes for ___________________
  • a) ethylene gas
  • b) ethylene gas receptor
  • c) hydrogen sulfide
  • d) hydrogen sulfide receptor
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