Quizzes

Excretion and Coordination: Neurones and Eye Quiz Estimated time: 45 minutes Total: 41 marks Scope: Excretion in humans, plus the neurones and eye sections of coordination and response. Hormonal coordination, homeostasis, temperature regulation, and tropic responses are excluded. Instructions: Answer all questions. Questions are short-answer or multiple-choice; there are no extended-response questions. Multiple-choice questions Q1 Which waste product is excreted through the lungs? A. Urea B. Carbon dioxide C. Excess ions D. Glucose ...

Organic chemistry quiz Duration: 45 minutes Total marks: 22 Answer all questions. Show structural formulae clearly and include reaction conditions where requested. Section A: Multiple choice (5 marks) Q1 (1 mark) Which is the general formula for alkenes? A. $C_nH_{2n+2}$ B. $C_nH_{2n}$ C. $C_nH_{2n+1}OH$ D. $C_nH_{2n+1}COOH$ Q2 (1 mark) Which change occurs from the bottom to the top of a fractional distillation column? A. Chain length increases. B. Boiling point increases. C. Volatility increases. D. Viscosity increases. ...

Reproduction Quiz Instructions: Answer all questions. Total: 32 marks. Multiple-choice questions Q1 [1 mark] Which statement correctly describes sexual reproduction? A. One parent produces genetically identical offspring without gamete fusion. B. Two gamete nuclei fuse to form a diploid zygote. C. A diploid cell divides to produce genetically identical offspring. D. Pollen is transferred from anther to stigma. Q2 [1 mark] What is pollination? A. Fusion of a pollen nucleus with an ovule nucleus B. Transfer of pollen from anther to stigma C. Growth of a pollen tube through the ovary D. Development of a zygote into an embryo ...

Curved Graphs Quiz Total: 40 marks Answer all questions. Show working for Questions 5–8. Give exact answers where appropriate. 1. [1 mark] A quadratic function has its vertex at $(2,-3)$ and passes through $(4,1)$. Which equation represents the function? A. $y=(x-2)^2-3$ B. $y=(x-2)^2+3$ C. $y=2(x-2)^2-3$ D. $y=(x+2)^2-3$ 2. [1 mark] What type of graph is represented by $y=\frac{1}{x}$? A. A straight line B. A reciprocal graph with two branches ...

Two permanent magnets are placed close together. They begin to push away from each other. Which is true? A) Both magnets have the same pole facing each other B) One magnet is north and the other is south C) The magnets have the same strength D) The field lines are crossing A transformer changes the alternating voltage. If the secondary voltage is higher than the primary voltage, what is the turn ratio? A) Ns > Np B) Np > Ns C) Np = Ns D) The transformer does not work ...