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a)Why do plant cells have mitochondria, but animal cells don't have chloroplasts? Give a phylogenic explanation.
b)What are four pieces of evidence that would support the acquisition of mitochondria by endosymbiosis?
c) Why do the light reactions of photosynthesis in a plant occur on the inner membrane of the chloroplast and not on the outer membrane?
d) Why do your cells have 80srRNA, while your mitochondria have 70srRNA?
Explain the sequence of events that underlie an action potential. Be sure to include all relevant ion channels, and the activity of each one during each of the major phases of the action potential.
Compare and contrast prokaryotic and eukaryotic cells. If shape and colour of radishes are both due to genes with partly dominant alleles, crossing two dihybrid heterozygotes will produce how many different phenotypes.
Imagine that you have been studying the population biology of ground squirrels on the UCSC campus for a number of years and have obtained the following information.
A patient was diagnosed with a UTI caused by E. coli. Explain the immunological course of events during the infection, development of the disease, an recovery of the patient.
Consider any natural populations that might be out of Hardy-Weinberg equilibrium? You need not to test this with statistics. Just name the species and explain the population.
People say the dose makes the poison, actually, the dose determines the concentration, and the local concentration determines the toxicity the poison.
A female has alleles C and H on one homolog, and c and h on the other. What kinds of eggs can she make if the genes are so close together that there is no crossing over between them.
NASA hopes they may one day be useful in producing some electricity on a spacecraft. What mode of nutrition do these bacteria most likely use.
You are becoming aware of the diversity and abundance of bacteria, and that we always have some uncertainty about the identity of an isolate. Describe the Hershey Chase experiment for determining the hereditary information in a virus?
DNAase is an enzyme that catalyzes the hydrolysis of covalent bonds that join nucleotides together. What will first happen to DNA molecules treated with DNAase.
The best characterization of apoptosis is: the unwanted, unexpected death of a cell. cell death is a normal consequence of a cell living long enough to eventually be killed by accident.
Assume you are analyzing microbial life in the Rocky Mountains. You scoop up a water sample from a melted snow puddle because you are curious about the possible microbes that might live there.
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