Which one of the following species is least prone to elimination? A. A primary fluoroalkane B. A tertiary fluoroalkane C. A tertiary bromoalkane D. A primary bromoalkane
Pure oxygen can be made by heating a compound containing potassium, chlorine and oxygen. What is the empirical formula of this compound, if a 4.1 g sample decomposes to give gaseous oxygen (O2) and 2.5 g KCl? (Ar of O=16.0, K=39, Cl=36)
Which of the following statements is true of the structure of the cardiovascular vessels? 1. Valves are typically found in arteries 2. Elastic fibres are found in both arteries and veins 3. Sphincter muscles are found in the walls of veins
After invasion of a host, human immunodeficiency virus (HIV) embeds its genetic material into the host genome. What number of thymine nucleotides would be present in the double-stranded DNA generated after reverse transcription of the RNA sequence listed below?
AspireMed
A proton and an alpha particle enter a magnetic field with the same velocity perpendicular to the field. Which has a larger radius of curvature?
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The radius of the circular path of a charged particle moving in a magnetic field is proportional to:
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A charged particle enters a uniform magnetic field perpendicular to the field. Which of the following remains unchanged?
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Which one of the following species is least prone to elimination?
A. A primary fluoroalkane
B. A tertiary fluoroalkane
C. A tertiary bromoalkane
D. A primary bromoalkane
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AspireMed
Pure oxygen can be made by heating a compound containing potassium, chlorine and oxygen.
What is the empirical formula of this compound, if a 4.1 g sample decomposes to give gaseous oxygen (O2) and 2.5 g KCl?
(Ar of O=16.0, K=39, Cl=36)
4 months ago | [YT] | 0
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Which of the following are typically larger in size in eukaryotes than in prokaryotes?
1. Cells
2. Amino acids
3. ATP molecules
4. Ribosomes
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Below are steps involved in a typical microarray experiment to measure changes in gene expression.
• Step H: Hybridisation of probes on microarray
• Step I: Reverse transcription
• Step J: Fluorescence tagging of cDNA
• Step K: Isolation of mRNA
• Step L: Scanning fluorescence intensity
Which of the following options refers to the correct order for these steps?
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Which of the following statements is true of both prokaryotic and eukaryotic DNA?
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AspireMed
Which of the following statements is true of the structure of the cardiovascular vessels?
1. Valves are typically found in arteries
2. Elastic fibres are found in both arteries and veins
3. Sphincter muscles are found in the walls of veins
4 months ago | [YT] | 0
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AspireMed
After invasion of a host, human immunodeficiency virus (HIV) embeds its genetic material into the host genome. What number of thymine nucleotides would be present in the double-stranded DNA generated after reverse transcription of the RNA sequence listed below?
5’ - AUG GCC CCU UCA GGC ACU - 3’
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