Insulin is a protein involved in the regulation of human blood glucose levels. Genetic engineering can be used to allow the large-scale production of human insulin. Which statement describes the…
Given that 4𝑝 × 8𝑞 = 2𝑛, express 𝑛 in terms of 𝑝 and 𝑞. Answer: 4𝑝 × 8𝑞 = (22)𝑝 × (23)𝑞= 22𝑝 × 23𝑞= 22𝑝+3𝑞∴ 𝑛 = 2𝑝…
Which one of the following is a unit of current? Answer: From power 𝑃 = 𝑉𝐼, current 𝐼 = 𝑃 / 𝑉 , so unit (ampere) = watt / voltThe…
Which row in the table correctly explains why an increase in temperature increases the rate of a reaction? Answer: When the temperature of a reaction is increased, the particles gain…
Before a cell can divide by mitosis, DNA synthesis has to take place. Following DNA synthesis, the DNA is separated into each half of the cell and then the cell…
Simplify:𝑥 2 −4𝑥𝑥 2 −16 Answer:𝑥 2 −4𝑥𝑥 2 −16 = 𝑥(𝑥−4)(𝑥+4)(𝑥−4) = 𝑥(𝑥+4)The answer is B
Below are four statements about electromagnetic radiation.1 Microwaves have a shorter wavelength than all other electromagnetic waves.2 For identical amplitudes, waves with the largest wavelength transfer the mostenergy.3 The speed…
Which of the following reactions are redox reactions?1 CuSO4 + Zn → Cu + ZnSO42 HCl + NaOH → NaCl + H2O3 Mg + H2SO4 → MgSO4 + H24 Pb(NO3)2…
The following statements relate to the flow of blood through the heart.1 Oxygenated blood flows through the right side of the heart.2 The vena cava empties deoxygenated blood into the…
A resultant force of 20 N has accelerated a body of mass 4.0 kg from rest, until the present moment, at which time its kinetic energy is 1800 J. If…