What must a pathogen that is outside the host accomplish in order to infect the host successfully and have its descendants infect another host?

Discuss what series of events may lead to septicemia and how it should be prevented and treated.

Que .

When phage infect a bacterial cell, they typically have a temporal program of gene expression, i.e., they express particular genes at particular times. What are two regulatory mechanisms phage use to control their gene expression?

Please state clearly each mechanism and provide detail explanation.

What kinds of science and technology are currently being used to investigate and/or monitor and prevent heart disease? Provide an example and discuss at least one.

Please describe the upstream molecular events that activate alpha, beta, and gamma subunits of G-proteins in a typical cell-signaling event. (please do not exceed more than 15 sentences in answer , thanks)

Explain your understanding of the purpose and process of primary homeostasis following an incision.

1 A) How does epistasis differ from Mendel’s principle of dominance?

1 B) A woman who owned a purebred albino poodle (an autosomal recessive phenotype) wanted white puppies; so she took the dog to a breeder, who said he would mate the female with an albino stud male, also from a pure stock. When six puppies were born, all of them were black; so the woman sued the breeder, claiming that he replaced the stud male with a black dog, giving her six unwanted puppies. You are called in as an expert witness, and the defense asks you if it is possible to produce black offspring from two pure-breeding recessive albino parents. What testimony do you give?

1.A single nucleotide mutation in the third position of a codon more often than in the second or first position

a) has no effect on the amino acid sequence of the encoded protein.

b) alters the reading frame of the mRNA.

c) changes an amino acid in the encoded protein.

d) introduces a stop codon into the mRNA.

2. The synthesis of new DNA requires the prior formation of RNA oligonucleotides to serve as primers. This latter observation is evidence in support of the hypothesized existence of

a) that Crick’s postulate of the flow of information is incorrect.

b) the endosymbiotic origin of mitochondria and chloroplasts.

c) an ancient RNA world

d) the abiotic synthesis of organic peptides

3.A frameshift mutation could not result from

a) a single nucleotide insertion

b) a dual nucleotide insertion

c) a single nucleotide substitution

d) a single nucleotide deletion

Transcription cycle: what are the discrete steps traversed through in a round of transcription?What distinguishes one step from another? What must occur for the polymerase to make the transition from one step to another?

What are the methods of micropropagation of plants? List and explain in detail what they consist of.

Starting with the actions in the mouth describe the digestion, absorption, and elimination of a meal containing carbohydrates, lipids, and proteins (include mechanical and chemical digestion in each of the structures of the GI tract, the enzymes, movement of the material through the digestive tract, the roles of the accessory structures in digestion, and changes in pH).

Gary, a middle aged salesman, complains of a burning pain in the pit of his stomach, usually beginning about two hours after eating and abating after drinking a glass of milk. When asked to indicate the site, he points to the epigastric region. the GI tract is examined by x-ray. A gastric ulcer is visualized and drug therapy using an antibiotic-bismuth approach is recommended.
a) why is this treatment suggested
b) what are possible consequences of non-treatment?

Explain how the Female Gametophyte development process works at a mechanistic level?

Question: The subject of modern human variation was framed in lecture as being the result of what three major selective pressures. List these and provide examples that illustrate how these pressures have changed the human gene pool over time.

please answer in 100 word or more

What do we know, both culturally and morphologically, about the emergence and geographic spread of the genus Homo?

Please answer this question in more than 100 word