What is the possible pathogenesis of polycythemia vera?

explain how CD8, CD4 and B cells work together either in the lymphoid tissue OR at the site of infection.

Beginning with the binding of TFIID and extending through the addition of the PolyA tail, please outline the entire process of transcription in eukaryotes. Be sure that you address the transcription factors, binding of RNA Polymerase, the modifications made to the mRNA as transcription is occurring, the CTD tail and the phosphorylation patterns and what significance those have, and alternative splicing.

In a certain variety of onions, pungent smell (P) is completely dominant to subtle smell (p), yellow (A) is completely dominant to white (a), and large bulb (B) is completely dominant to small bulb (b). For the following crosses and results, what are the genotypes of the parents?

- pungent, large x subtle, large. 3⁄4 pungent, large; 1⁄4 pungent, small

- subtle, white x subtle, yellow 1⁄2 subtle, white; 1⁄2 subtle, yellow

- yellow, large x white, small 1⁄4 yellow, large; 1⁄4 white, small; 1⁄4 yellow, small; 1⁄4 white, large

- subtle, white, large x pungent, white, large. 1⁄2 pungent, white, large; 1⁄2 subtle, white, large

- subtle, yellow, large x subtle, yellow, small. all subtle, yellow, large

What phenotypic ratio is expected from a crossing an onion of genotype Pp Aa bb with an onion of genotype PP aa Bb?

Distinguish between inducible operons and repressible operons and explain how they work. Describe the three types of prokaryotic genetic recombination (conjugation, transformation, and transduction). Explain how recombination might interfere with the metabolic functions of operons, such as the lac operon or trp operon of E. coli.

how does mitochondria carry out the process of aerobic respiration

Describe the activation of the complement system making sure to list the three major outcomes. Give two examples of mechanisms by which a parasite we discussed in lecture evades complement activation.

In plants, twisted leaves, a hypothetical mutant phenotype, may be caused by either a chloroplast gene (C^T = normal; C^t = twisted) or a recessive nuclear gene (N^T = normal; N^t = twisted). Assume chloroplast DNA is maternally inherited. Predict the genotypic and phenotypic ratios in the offspring of the following crosses:

a.         C^T N^tN^t female x C^t N^TN^T male

b.         C^t N^tN^t female x C^T N^TN^T male

c.         F₁ male from cross (a) x F₁ female from cross (b)

List five characteristics, in order from ancestral to derived that occurred during the eye development.

From early chordates' light sensitive pits to the current spherical evolved eye, in sharks for example.

Blood glucose levels are under the control of the hormones insulin and glucagon. Describe the control of blood glucose levels in a (normal) individual following a carbohydrate meal.

Do some research and add your ideas to the following topic.

WHAT IS AN ENVIRONMENTALLY SUSTAINABLE SOCIETY?

Then write an answer using at least 200 words but fewer than 300 words to describe the answer to the question. Then upload your document.

Microbiology Question:

An organism is exposed to a chemical which impedes (but does not block) the flow of electrons through the electron transport chain. Explain the consequences in a manner which demonstrates your understanding of chemiosmosis/oxidative phosphorylation.

What's the function of these systems?
esophagous, phraynx, glottis, trachea

Describe how the Hershey-Chase experiment demonstrated that DNA is the genetic material, not protein as previously thought. Explain how they used radioactive isotopes and bacteriophages in their experiment and summarize their conclusions.

You may choose more than one answer. In order to demonstrate that a growth hormone binds its receptor specifically, you must show which of the following?

Dose-dependent binding

Saturation binding

Specific binding

Protein activity