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Fungi play many important ecological roles. They are heterotrophic and break down organic matter extracellularity and then absorb the nutrients.
a.In a world without fungi, how would the decomposition of dead and decaying matter be affected? Do you think this would harm, or help plants? Briefly justify your answer.
b.Instead of having male and female gametes, fungi have multiple mating types. Explain why this is so.
Artificial electron acceptors can also be used to notice a specific organelle in animal cells by cytochemistry. Name this organelle and outline a procedure that you will use to detect this organelle by cytochemistry.
what ways are the mechanisms of action similar. CA2+, IP3, and cAMP have all been described as second messengers.
A ct scan of a forty year old woman with parathyroid adenoma and hyperthyroidism reveals extensive calcium deposits in the lungs and kidney paranchyma.
Three different RNA polymerases are found in all eukaryotic cells, and each is responsible for synthesizing a different class of RNA molecules. How do the classes of RNAs synthesized.
In a population of 50,000 diploid yeast cells (in this case the census and effective population sizes are identical) all cells have genotype A until a mutation (A-a) occurs, giving one copy of a. Alleles confer equivalent fitness.
If an animal needed to store energy for long-terms use, but not be encumbered with the weight of extra tissue, which is the best molecule for storage.
Assume an animal has a diploid number of 18, with DNA content of 39 ng. A. What is the DNA content (in ng) in the G1 and the G2 stage of the cell cycle? B. At what stage(s) of interphase are sister chromatids observed?
Lipid rafts are specialized regions of the exoplasmic leaflet. GPI-anchored proteins are able to diffuse from the main (non-raft) area of the exoplasmic leaflet into a lipid raft and then back out into the main exoplasmic leaflet area. Which state..
A population of birds colonizes an area in which the insects upon which they feed live inside trees. Which of the following events accounts for an observed increase in average beak size in the bird population over time?
Describe why you can predict that meiosis gives rise to genetic differences between parent's cells and daughter cells in fewer cell divisions than mitosis does.
A lab is working on drugs that disrupt cell division and have created drugs that inhibit DNA replication in tumor cells. You, being a curious grad student want to test each drug and figure out which DNA replication enzyme it targets.
The mean value of a trait is 250 units and the h2 for the trait is .50. A male and female measuring 240 and 280 units respectively are selected for breeding and they produce several offspring. Find expected value for the trait among their offspring.
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