Forwarded from اختبر نفسك 💊
5) Complex IV is:
Anonymous Quiz
12%
a) Q-Cytochrome c oxidoreductase.
5%
b) Succinate-Q oxidoreductase.
79%
c) Cytochrome c oxidase.
4%
d) NADH-Q oxidoreductase.
Forwarded from اختبر نفسك 💊
6) All the following act as proton pumps except:
Anonymous Quiz
1%
a) Complex I
84%
b) Complex II
5%
c) Complex III
11%
d) Complex IV
Forwarded from اختبر نفسك 💊
7) .......... consist of Several sub-units of the protein form a ball-like shape arranged around an axis.
Anonymous Quiz
34%
a) F0
55%
b) F1
11%
c) None of them
Forwarded from اختبر نفسك 💊
8) In substrate level phosphorylation ATP formed from ADP and a phosphorylated intermediate.
Anonymous Quiz
81%
T
19%
F
Forwarded from اختبر نفسك 💊
9) ....... is inhibitor of complex III
Anonymous Quiz
16%
a) Malonate
3%
b) Rotenone
67%
c) Dimercaprol
14%
d) Cyanide
Forwarded from اختبر نفسك 💊
10) ......... block the flow of protons through ATP synthase.
Anonymous Quiz
15%
a) Atractyloside
71%
b) Oligomycin
14%
c) 2,4-dinitrophenol.
Forwarded from اختبر نفسك 💊
Forwarded from اختبر نفسك 💊
12) The inner mitochondrial membrane is freely permeable to the following except:
Anonymous Quiz
9%
a) CO2
14%
b) Water
54%
c) NADH
23%
d) NH3
👍1
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
Law of thermodynamics which states that energy can neither be created nor be destroyed is ___________
Anonymous Quiz
18%
Zero-order kinetics
69%
First law of thermodynamics
5%
Third law of thermodynamicsc
8%
The second law of thermodynamic
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
Gibb’s free energy is the portion of the total energy which is available for useful work.
Anonymous Quiz
85%
true
15%
false
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
Which of the following equation shows the relationship between free energy change (∆G) and the change in entropy (∆S), under constant temperature and pressure?
Anonymous Quiz
13%
∆G = T∆H – ∆S
3%
∆G = T∆H/∆S
3%
∆G = ∆H/T∆S
81%
∆G = ∆H – T∆S
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
What is the value of ∆G, when a system is in equilibrium?
Anonymous Quiz
90%
∆G = 0
6%
∆G = ∆G֯
2%
∆G = -1
3%
∆G = 1
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
Which of the following equation gives the relationship between ∆G֯ and Keq?
Anonymous Quiz
59%
∆G֯ = -RT ln Keq
22%
∆G = -RT ln Keq
11%
∆G = ∆G֯ (-RT Keq)
8%
∆G֯ = ln Keq
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
Which of the following act as a storage form of high energy phosphate?
Anonymous Quiz
35%
Glucose-6-phosphate
6%
Glycerol phosphate
39%
Phosphagens
20%
Phosphoenolpyruvate
👀2
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
If enthalpy change for a reaction is zero, then ∆G° equals to _____________
Anonymous Quiz
63%
-T∆S°
15%
lnkeq
13%
-∆H°
9%
T∆S°
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
∆G° is defined as the ____________
Anonymous Quiz
12%
Residual energy present in the reactants at equilibrium
24%
Difference in the residual energy of reactants and products at equilibrium
9%
Residual energy present in the products at equilibrium
55%
Energy required in converting one mole of reactants to one mole of products
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
The study of energy relationships and conversions in biological systems is called as ____________
Anonymous Quiz
4%
Biophysics
3%
Microbiology
91%
Bioenergetics
3%
Biotechnology
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
What does first law of thermodynamics state?
Anonymous Quiz
75%
Energy can neither be destroyed nor created
9%
Input of heat energy increases the rate of movement of atoms and molecules
10%
All living organisms are composed of cells
6%
Energy cannot be 100 percent efficiently transformed from one type to another
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
Which of the following statements is true?
Anonymous Quiz
32%
The reaction tends to go in the forward direction if ∆G is large and positive
9%
The system is at equilibrium if ∆G = 1
18%
The reaction tends to move in the backward direction if ∆G is large and negative
42%
The reaction tends to move in the forward direction if ∆G is large and negaitive