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Q. Scientists consider that photosynthesizing organisms originated in water. Before the earth had an atmosphere, water provided the only protection from harmful rays of the sun. As the organisms in the water began to produce oxygen and an atmosphere developed, it was possible for land plants to evolve. You have studied photosynthesizing organisms from algae, diatoms and dinoflagellates (Kingdom Protista) to more advanced forms in the Kingdom Planta starting with bryophytes (the most simplistic land plants), after that ferns and finally gymnosperms (the most complex group in the plant kingdom we have looked at so far. Trace the progression from one group to another (algae, bryophytes, ferns and gymnosperms). What changes took place from one group to another? What advantages did each progressive group have over the last? Will you categorize each as more sucessful than the last?
Lipid metabolites are often seen as key elements in cellular signaling. Is this unique? Please provide several examples of the function of lipids as key elements in signal arrays and list the biologic functions these signals affect?
Cyanobacteria grow prolifically in streams and lakes with low oxygen levels and high nutrient concentrations. How may the presence or absence of cyanobacteria be used as an index of pollution in lakes.
What are genotypes of all the individuals mentioned in this difficulty. What is the point of the agar dish not treated with X-gal.
Apoptosis and the Hayflick limit and their relationship to cancer formation
The movement of glucose into a cell against a concentration gradient is most likely to be accomplished by which of the subsequent. movement of glucose into the cell through a glucose channel.
Rhosopseudomonas is an anaerobic photoautotroph. How would you sterilize a mattress used by a patient with bubonic plague.
What kind of approach is this alien taking to learn about the car? An alien from a new planet landed on earth. He is attentive by cars and is determined to figure out how they work.
What fraction of demes in each set is likely to become fixed for allele A1 versus A2. Explain the differences in head movement available to fish.
Protein classification schemes
What F1 phenotypic and genotypic ratios are formed from this cross . how may this affect the rate of protein synthesis.
In an experiment you are studying a neuron that receives synaptic inputs from two other neurons: one from neuron A and one from neuron B. Illustrate a separate graph for each value of Vm.
What advantage will heterozygotes have over the homozygotes. Why selection inevitably favors any gene that is good at getting into the next generation, regardless of whether that gene helps or hurts the ecosystem, the species, the group, or even the ..
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