Biochemistry Answers

What is the isoelectric point of each of the following peptides?

1. His-Ala-Tyr

2. Ala-Lys-His-Ala

1. Explain the features of the molecule represented in the structural diagram below. You must identify and describe each of the following:
2. Type of macromolecule and how you know
3. Functional groups present

For centuries, people have searched for the fabled Fountain of Youth, said to confer the ability to

forestall old age and remain young forever. To gain insight into how tackling aging by targeting

telomerase might work, researchers looked at mice that lack a telomerase gene. These mice have

shorter telomeres than normal mice and age prematurely. However, when these mice were engineered

to express telomerase in their somatic cells, their telomeres lengthen and the effects of aging are

reversed. This observation suggests that a drug that stimulates the expression of telomerase in somatic

cells could prevent telomere shortening and stop the aging process. Consider how such a drug would

work and what may be some potential side effects of such a drug?

correct me if I am wrong:

when K is less than 1, the concentration of reactants is greater than products. Delta G is negative, or exergonic and K>Q, has a forward reaction

when K is greater than 1, the concentration of products is greater than reactants. Delta G is positive, or endergonic, and K<Q, has a reverse reaction.

I might have them wrong in some way, but this is why I am confused.

Also, is this correct for delta Gº:

if delta Gº is positive, there is a greater amount of reactants, a reverse reaction is favored to reach equilibrium. And if delta Gº is negative, there is a greater amount of products, and a forward reaction is favored to reach equilibrium.

Explain how changes in conditions can increase or decrease the population of phage therapy in the human body?

Assume that mitochondria contain 0.29 Molar KCL and 0.03 Molar NaCl. Calculate the grams per liter, of a carbohydrate similar to glucose with a molecular weight 289 amu, that will have the same osmolarity as the mitochondria.. Calculate answer to two decimal places, do not specify units in the answer.

What is the strength of the ionic interactions between an ion with 2 positive charges and an ion with 1 negative charges, when the distance between them is 15.5 nanometers and the solvent is benzene, with a dielectric constant of 4.6?

Calculate answer to 6 decimal places. Do not specify units in the answer.

Glucose in stored in the body as glycogen. Consider the oxidation reaction for glucose with oxygen (C6H12O6 + O2 = CO2 + H2O). Balance this equation and calculate how many ml of metabolic water will form from the oxidation of 196 grams glucose. Assume that 1 ml water has a mass of 1 gram. Calculate your answer to two decimal places, do not specify the units in your answer.

How may the conditions in the human body have an impact on any other of the life processes carried out by phage therapy?

<What is the biomarker of Treg cell and is related to IL-2 receptors?>

1. CD4 2.CD19 3.CD25 4.FoxP3 5.GATA3