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1) Describe in detail about cell wall and nucleooid of bacterial cell, their structure and composition.
There exist two main kinds of cells: prokaryotic and eukaryotic. Bacterial cells are prokaryotic. Choose two structures of the bacterial cells and briefly explain them; what do they look like, what are they composed of? Then, describe how these two structures allow bacterial cells to survive as unicellular organisms.
2) Explain the difference between ionic and covalent bonds.
Define cell in your own words. Explain the two chief tenets of the cell theory? Explain the difference between the deuterostomes and protostomes? Among the living organisms, at least name one phylum example of each of these.
If I wanted to test the drug to see if it made mice run faster, how could I test that and what would be my control?
Diploid nuclei of the ascomycete, Neurospora crassa, contain 14 chromosomes. A single diploid cell in an ascus will undergo one round of meiosis, followed in each of daughter cells by one round of mitosis, producing a total of eight ascospores.
Explain how cell division and the sexual reproduction help in genetic variability of organism. How do both the meiosis and sexual reproduction (fertilization) generate offspring which differ genetically from parents?
What is contributing to decreased alveolar ventilation. Describe the reflexes involving causing the tachypnea in this individual.
What is the difference between heterosporous and homosporous plants? What two types of spores do heterosporous plants produce? Spores that will develop into a female gametophyte are.
What would occur to the preferred habitat of your plant (Red Maple) in case of partial water drainage of the Mer bleue marsh (such as the water level would go down half the depth of the marsh).
Structure and based analysis of proteins
Assume that a mutation occurs in an intron of a gene encoding a protein. What would the most probable effect of the mutation be on the amino acid sequence of that protein.
Compute the change in energy of an atom that emits a photon of wavelength 2.21 meters. (Planck's constant is 6.626 x 10-34 joule seconds; the speed of light is 2.998 x 108 m/s)
Why does some scientist think that areas protected from the otmosphere might have favoured the production of organic compounds on early earth.
Describe why digestion of lipids is difficult for digestive enzymes? What should happen to fats or lipids in order for digestion to be complete.
What is a chloride reversal potential. Is there a net movement of chloride into or out of the cell while you add GABA to the bath? If so, in which direction.
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