EXAMINATION INSTRUCTIONS 1. This question paper consists of SECTION A and SECTION B 2.  One Question from Section A and one Question from Section B must be answered. 3. SECTION A: Discursive Essay  Question 1: Russian Revolution  Question 2: Crisis of Capitalism: The Great Depression in the USA  Question 3: Apartheid in South Africa:1940’s to 1960’s    SECTION B: Extended Writing  Question 4: Russian Revolution  Question 5: Crisis of Capitalism: The Great Depression in the USA  Question 6: Apartheid in South Africa:1940’s to 1960’s  4. When answering the questions, you should apply your knowledge, skills and insight. 5.  Accurate and adequate factual knowledge is essential; equally important is the ability to use relevant information critically in answering the questions.  

1.1.3. Visual Literacy (2)

How many grams of powder milk would you need to prepare 500 mL of a 4% w/v milk solution?

A serial dilution is performed using the ATP stock from the previous question, as follows below. Determine the concentration, in μg/mL, of tube 3.             

You measure the absorbance of several samples of known concentration in order to generate a calibration curve. You plot the data with concentration (mg/ml) on the x-axis, and absorbance (AU) on the y-axis. The curve has an R2 value of 0.99 and an equation of y = 0.46x + 0.008. You measure the absorbance of a new sample, of unknown concentration. You get a result of 1.7 AU. Based on your calibration curve, what can you estimate the sample’s concentration to be, in mg/ml? Round your answer to 2 decimals. 

How many grams of caffeine would you need in order to prepare 50 mL of a 30 µM solution of caffeine? The Mw of caffeine is 456 g/mol.

You have a 64 mM stock that needs to be diluted to 1 mM. If you perform 1:2 dilutions serially, how many dilutions would it take until you reached 1 mM?

Below is some data for three years of recent activity for Firm X Summary of credit data related statistics Financial statemen figures in millions  $ 2024 2023 2022 Sales 245 225 210 Gross Receivables 52 50 46 Allowances for bad debt 5.2 6.0 4.8 Net Receivables 46.8 44 41.2 Unemployment rate end year 4% 6% 5.1% % of accounts 90 days past due 4.5% 6.6% 5.32% a) Given the rise in net receivables during 2024, this is likely channel stuffing which may have increased sales by over $2 million b) Assuming the firm’s past allowances for bad debt in 2022 and 2023 were accurate given the credit environment at the time, the firm is likely underestimating bad debt expense in 2024 by around $1.2 to $2.1 million c) Assuming the firm’s past allowances for bad debt in 2022 and 2023 were accurate given the credit environment at the time, the firm is likely underestimating bad debt expense in 2024 by around $0.2 to $1.19 million d) Both a) and b) e) Both a) and c) f) most likely none of the above given all the data presented 

The following will make Cash Flow from Operations increase and Net income Increase in the current year a) An increase in the value of a marketable Equity security during the year b) Cutting Cash Advertising at the last few days of the year c) A large impairment of land expense during the year d) A change of an assumption that lowers GAAP non-cash Depreciation and Amortization at the start of the current year e) all the above f)  b) and d) g) none of the above

Rocket Ship Inc recently adopted more aggressive revenue recognition assumptions.  They will recognize more revenue sooner on sales of bundled software products.  The firm’s sales are projected to grow steadily at 15% for the next 5 years.  The quicker revenue recognition standard will likely lead to higher reported GAAP profits and higher GAAP sales in 3 to 5 years relative to if the firm had kept the old slower revenue recognition assumptions.