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Q1. In recent year's phytoplankton have been investigated as a potential source of energy for humans. Researchers have therefore been interested in whether this organism can be 'farmed' to provide food or fuel. In terms of biomass, Gross Primary production (GPP) in phytoplankton living in the layer just below the surface of a typical ocean area is 4102 g m-2 yr-1. If you assume the energy value of phytoplankton is 6 kJ g-1, compute the GPP in terms of kJ m-2 yr-1. Show the working clearly.
Q2. Genetic diversity is necessary for natural selection to act, but natural selection can decrease or eliminate diversity. What procedure can restore genetic diversity to a population?
Critically discuss the difference between food intoxication and food infections. In May 2012, a young woman in Georgia was zip lining and fell into a river.
Describe the debate between the theory of spontaneous generation and biogenesis. Explain how Louis Pasteur's experiment with S-next Flasks in the 1900's resolved this debate. Include a detailed description of pasteur experiment and an analysis of ..
For which of the hydrogen atoms in these two structures will it be possible to infer the hydrogen positions, so that it is unnecessary to measure them?
Drowning, suffocation and carbon monoxide poisoning can lead to death because they all prevent oxygen from reaching our cells. Explain how this lack of oxygen can lead to death; be specific and please explain in dummy terms.
Which of the following is TRUE about the initiator tRNA?
What are three categories of genes that when mutated can lead to tumor formation? Describe the characteristics of each category.
A single gene controls color. When you crossed pure-breeding white-horned individuals with a pure-breeding black-horned ones, you got all gray-horned F1 offspring. You then crossed the gray-horned offspring with each other.
Part of a gene that codes for a small protein has the following base sequence: CTTACACGCGCGATTGACT. What would the RNA code be after transcription?
What factors of the environment and/or biology of the birds pictured lead to similarities/ differences?
Name an example of a red blood cell membrane protein that carries out each function of that you gave in part (a) of this question.
How do materials enter and exit the nucleus? What are participating proteins?
An RNA virus is discovered that converts its RNA to double-stranded DNA prior to the insertion of the viral genome into the host genome
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