8. Hydrophobic interactions originate from a. Coulombic forces b. Entropic forces c. Gravitational forces d. None of the above Introduction Hydrophobic interactions originate from entropic forces and drive key biological […]
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Surface Tension of Plasma Membrane vs Pure Lipid Bilayer
7. Which of the following is true regarding the surface tension of plasma membrane? a. Surface tension of plasma membrane is more than pure lipid structures b. Surface tension of […]
Electrode Potential Calculate EMF of Fe²⁺ + Zn → Zn²⁺ + Fe
6. The standard electrode potential for the half cell reactions are: Zn++ + 2e– → Zn, Eo = – 0.76 V Fe++ + 2e– → Fe, Eo = – 0.44 […]
Why Charges Move in a Closed Electric Circuit with a Battery and Resistor
5. Which of the following is correct about a closed electric circuit including a battery and a resistor? a. charges move through the circuit because the resistor supplies energy. b. […]
Why Nuclear Reactor Water Glows Blue
4. A nuclear reactors fuel rods are immersed in water, which acts as a coolant and a moderator. You notice a blue glow around the fuel rods. This is due […]
Entropy of a Perfect Crystal at Absolute Zero
3. According to the third law of thermodynamics, entropy of a perfect crystal at absolute zero temperature is a. always negative b. always positive c. equal to zero d. equal […]
Work Done on Electrons Moving Through Electric Field
2. What is the work done on 5 electrons moving through a uniform electric field from a potential of 0 volts to a potential of 10 millivolts (mV). The movement […]
Effective Resistance Across A and B
1. From the circuit diagram below, what the value of the resistance across A & B? a. 5 b. 10 c. 15 d. 20 Introduction Finding the equivalent resistance across […]
DNA Mass in Diploid Human Nucleus
15. A DNA nucleotide pair has an average mass of approximately 660 daltons. Write down the picogram amount, rounded to the closest integer, of DNA in a diploid human nucleus. […]
Probability that Two Witnesses Contradict Each Other
14. A speaks the truth in 75% cases whereas B lies in 20% cases. In what percent of cases are they likely to contradict each other narrating the same incident? […]


