Exams & Certification

Following the eclipse phase, which is the first viral molecule made? a) Nucleic acid b) Protein c) Lipid d) Carbohydrate e) Interferon The correct answer and explanation is: The correct answer is a) Nucleic acid. After a virus infects a host cell, it enters the eclipse phase. This phase is characterized by the initial uncoating […]

Which is unique to viruses? a) SNRNPs b) mRNA c) receptors d) proteases e) polyproteins The correct answer and explanation is: The correct answer is e) polyproteins. Polyproteins are unique to viruses and are a hallmark of many viral replication processes. In some viruses, especially RNA viruses, the genome encodes a large, single protein called

The best evidence that viruses require a host to replicate can be observed a) by the eclipse phase. b) by CPE. c) by using a diagnostic technique. d) by plaque assay in presence and absence of host cells. e) by infection and the spread of disease. The correct answer and explanation is: The correct answer

Which of the following best describes a virus? a) They are measured in microns because they are small b) They are filterable c) They have at least DNA or RNA d) They have nucleic acid and protein e) They cause disease in humans The correct answer and explanation is: The correct answer is d) They

US withholding tax is only imposed on which kind of investments? a. Dividends received on US shares. b. Capital gains on sale of US shares. c. US real estate sold for proceeds less than $300,000. d. Interest received on corporate bonds issued by a US company. The correct answer and explanation is: The correct answer

Which would be considered a psychoactive drug? Multiple Choice antibiotics antihistamines caffeine aspirin The correct answer and explanation is: The correct answer is caffeine. Caffeine is considered a psychoactive drug because it affects the brain and central nervous system, leading to changes in mood, alertness, and cognitive function. As a stimulant, it works by blocking

Which one of the following is common for chylomicron and VLDL? a. Both have B48 and C-II b. Both are produced by the liver c. Both can be used by lipoprotein lipase d. Both degraded in hepatic tissue The correct answer and explanation is: The correct answer is c. Both can be used by lipoprotein

During an economic expansion, what would be the effect of an automatic stabilizer? It forces consumption to rise. It increases government spending. It increases tax revenues. It decreases tax revenues. The correct answer and explanation is: The correct answer is It increases tax revenues. During an economic expansion, automatic stabilizers work to moderate the pace

What phrase describes businesses who develop a positive relationship to society? A. Eco-corporations B. Greening the office C. Social responsibility D. Social behavior The correct answer and explanation is: The correct answer is C. Social responsibility. Social responsibility refers to the concept where businesses recognize the importance of their role in society beyond just making

All of the following aid in venous return except options: muscular pump valves respiratory pump systemic vasoconstriction The correct answer and explanation is: The correct answer is systemic vasoconstriction. Venous return refers to the flow of blood back to the heart, which is facilitated by several mechanisms. These mechanisms include the muscular pump, valves, and