UNE Biochem 1005 Final Exam (2025) comprehensive
questions and verified detailed solutions (MULTIPLE
CHOICES) |complete solutions |A+ GRADED |100%
CORRECT!!
Somatostatin reduces the secretion of both glucagon and insulin through which
of the following mechanisms?
a. Somatostatin activates an activator G-protein
b. Somatostatin activates MAPK cascade
c. Somatostatin activates an inhibitory G-protein
d. Somatostatin uses Ca+2 as a downstream signal - (ANSWER)c. Somatostatin
activates an inhibitory G-protein
Insulin mediated glucose uptake by muscle and adipose tissue is a result of which
of the following mechanisms?
a. Translocation of GLUT 4 receptors to the cell surface
b. Translocation of GLUT 1 (Na+/K+ symporter) to the cell surface
c. Passive diffusion
d. Activation of protein kinase A - (ANSWER)a. Translocation of GLUT 4 receptors
to the cell surface
The alanine - glucose cycle is primarily used for which of the following purposes?
,a. To move ammonia from skeletal muscle to the liver
b. To generate ATP for the skeletal muscle
c. To move glucose from the skeletal muscle to the liver
d. To move alanine from the liver to the skeletal muscle - (ANSWER)a. To move
ammonia from skeletal muscle to the liver
Which statement best illustrates an example of post translational gene
regulation?
a. Protein kinase A mediated phosphorylation of glycogen phosphorylase
b. Cortisol binds a cytosolic receptor, translocates to the nucleus and binds a GRE
c. Iron binding the iron response elements binding protein (IRE_BP) allowing for
translation of ferritin mRNA
d. DNA histone associations leading to super-coiling of DNA - (ANSWER)a. Protein
kinase A mediated phosphorylation of glycogen phosphorylase
Which of the following hormones is released from the liver in response to
increased levels of growth hormone?
a. Cortisol
b. Thyroid hormone
c. Somatostatin
d. Insulin-like growth factor (IGF) - (ANSWER)d. Insulin-like growth factor (IGF)
, Autophagy is process involves degradation of protein. Under conditions of high
energy (HIGH ATP) which of the following is true regarding regulation of this
process?
a. Akt is inactive
b. AMPK is actice and phosphorylates TSC1/TSC2 Complex
c. mTOR is activated
d. Rheb is bound to GDP - (ANSWER)c. mTOR is activated
Synthesis of which of the following lipoproteins would be elevated after a
carbohydrate rich meal?
a. HDL
b. Chylomicrons
c. LDL
d. VLDL - (ANSWER)d. VLDL
The synthesis of N-acetylglutamate (NAGS) is required for the activity of the urea
cycle. This compound stimulates the activity of which of the following enzymes?
a. Arginase
b. Carbamoyl phosphate synthetase I (CPSI)
questions and verified detailed solutions (MULTIPLE
CHOICES) |complete solutions |A+ GRADED |100%
CORRECT!!
Somatostatin reduces the secretion of both glucagon and insulin through which
of the following mechanisms?
a. Somatostatin activates an activator G-protein
b. Somatostatin activates MAPK cascade
c. Somatostatin activates an inhibitory G-protein
d. Somatostatin uses Ca+2 as a downstream signal - (ANSWER)c. Somatostatin
activates an inhibitory G-protein
Insulin mediated glucose uptake by muscle and adipose tissue is a result of which
of the following mechanisms?
a. Translocation of GLUT 4 receptors to the cell surface
b. Translocation of GLUT 1 (Na+/K+ symporter) to the cell surface
c. Passive diffusion
d. Activation of protein kinase A - (ANSWER)a. Translocation of GLUT 4 receptors
to the cell surface
The alanine - glucose cycle is primarily used for which of the following purposes?
,a. To move ammonia from skeletal muscle to the liver
b. To generate ATP for the skeletal muscle
c. To move glucose from the skeletal muscle to the liver
d. To move alanine from the liver to the skeletal muscle - (ANSWER)a. To move
ammonia from skeletal muscle to the liver
Which statement best illustrates an example of post translational gene
regulation?
a. Protein kinase A mediated phosphorylation of glycogen phosphorylase
b. Cortisol binds a cytosolic receptor, translocates to the nucleus and binds a GRE
c. Iron binding the iron response elements binding protein (IRE_BP) allowing for
translation of ferritin mRNA
d. DNA histone associations leading to super-coiling of DNA - (ANSWER)a. Protein
kinase A mediated phosphorylation of glycogen phosphorylase
Which of the following hormones is released from the liver in response to
increased levels of growth hormone?
a. Cortisol
b. Thyroid hormone
c. Somatostatin
d. Insulin-like growth factor (IGF) - (ANSWER)d. Insulin-like growth factor (IGF)
, Autophagy is process involves degradation of protein. Under conditions of high
energy (HIGH ATP) which of the following is true regarding regulation of this
process?
a. Akt is inactive
b. AMPK is actice and phosphorylates TSC1/TSC2 Complex
c. mTOR is activated
d. Rheb is bound to GDP - (ANSWER)c. mTOR is activated
Synthesis of which of the following lipoproteins would be elevated after a
carbohydrate rich meal?
a. HDL
b. Chylomicrons
c. LDL
d. VLDL - (ANSWER)d. VLDL
The synthesis of N-acetylglutamate (NAGS) is required for the activity of the urea
cycle. This compound stimulates the activity of which of the following enzymes?
a. Arginase
b. Carbamoyl phosphate synthetase I (CPSI)
