(a) Briefly outline the two stages of chemical carcinogenesis. (4 marks) (b) What is the difference between a carci...
(a) Outline the two stage process of genotoxic carcinogenesis. (3 marks) (b) Explain why benzo[a]pyrene (structure below), a constituent of cigarette smoke, causes lung cancer. (3 marks) Benzo[a]pyrene (c) Why is 2-aminonaphthalene (2-napthylamine; structure below) a specific bladder carcinogen. (4 marks) NH2 2-aminonaphthalene
3. (a) Outline four (4) characteristics of the normal distribution. b. The marks scored by the candidates in an examination are normally distributed with mean 54 and standard deviation 16 marks. If the top 12% of the candidates obtained distinction and the bottom 15% failed estimate correct to 2 significant figures: 1) the pass mark (ii) the least mark for distinction (C) Suppose that one in five customers buy product Y. If four customers are chosen at random: what is...
3112 1617 Q4 Q4 (4 marks) (a) What is machine learning? (b) Discuss the difference between classification and clustering. Give one example algorithm (6 marks) for classification and clustering respectively For Q4(c)-Q4(f, consider the figure below which shows the examples (instances) with different Yellow Red Purple Orange Height Blue Red Violet Green Width (c) Is k-Nearest Neighbors (KNN) a classification method or clustering method? mark) (d) What is the outcome of KNN for the query point based on I-nearest neighbor?...
Post lab Questions 1) Write briefly about ARM architecture? 2) What is the difference between RISC and CISC? 3) What is the difference between Microprocessor and Microcontroller? 4) What are the different layers involved in software? Explain more about it? 5) What are the different stages involved in software development? Explain more about it? 6) What are the core peripherals of the cortex M4 microprocessor? 7) What are the different components of CPU? Explain briefly about each component?
1. Define the difference between sterilization and disinfection. 2. Define the difference between a disinfectant and an antiseptic. 3. List one chemical and one physical method of disinfection. 4. List two areas or items that would need to be sterilized. 5. Gram negative and gram positive organisms have different sensitivities to disinfectants and antiseptics. Explain why.
[ 2 + 3 + 3 + 5 = 13 marks ] Question 4 (a) For the case of two qubits, briefly explain the main difference between product states and entangled states. Provide one example of each. (b) Show that the identity between spin angular momentum operators S+S- = S2- S2 ± hS, holds. Data: S S tiSy, [Se, Sy] = ihS2, [Sy, S2] = ihS, [S2, S = ihSy. (c) An s = 1/2 particle at t =0 is...
Q.2 i) Briefly explain the difference between Closed-loop traverse and Closed-line traverse. (4 marks) ii) Perform Traverse (closed-loop) computation of the provided observations as shown in the following diagram. Calculate a) The Angular Misclosure & adjustment; (6 marks) b) Linear Misclosure & Accuracy; (6 marks) c) Adjustment by "Bowditch method"; (5 marks) d) Adjusted coordinates for stations B&C. (4 marks) Given Data: Bearing of AB: 60°25'45 Coordinates of Station A: (100.000m E and 100.000m N) Station Station Observed Horizontal Distance...
a. Briefly explain two primary reasons for a firm to hold cash. (4 marks) b. A firm's weekly average cash balances are as follows: Week 1 Week 2 Week 3 Week 4 RM24,000 RM34, 000 RM10,000 RM15,000 nual interest rate is 12 percent, how much return can be earned on the average (5 marks) cash balance? c. Using appropriate example, distinguish the lead and lag strategies. (6 marks) d Classity whether the following actions INCREASE, DECREASE, or CAUSE NO CHANGE...
a) Briefly describe the two forms of quantization used in image processing 2 marks b) Consider the 1D image fragment below. Give the pixel values after filtering with () 1x3 mean filter (ii) 1x3 median filter. State how you handled the image boundaries and propose one alternative. Give one strength and one weakness for each of the filters 4 marks 210 210 90 90 210 210 c) Draw a rough sketch of what the image histogram for the image of...
Question 4 (a) Based on your understanding, give two major differences between cash equivalents and short-term investments. [4 marks] (b) Define temporary investments and explain briefly the conditions that a financial asset is classified as “held for trading”. [4 marks]