In: Biology
1. What is a multi-enzyme complex? What are the advantages of a multi-enzyme complex?
2. What is the function of each of the three catalytic enzymes that make up pyruvate dehydrogenase? What is the role of prosthetic groups TPP and lipoic acid and which enzyme is each attached to?
3. What are the substrates and the products of the steps in the Citric Acid Cycle where CO2, NADH, and FADH2 are produced?
In: Biology
next to each statement it is true or false
The 1.-An enzyme can only function once, because it is changed by the chemical reaction. [ Select ]
2.- An enzyme's function depends on its three-dimensional shape. [ Select ]
3.- Each enzyme can work with a broad range of substrates. [ Select ]
4. An enzyme inhibitor can prevent a substrate from binding to the active site. [ Select ]
In: Biology
3) In enzyme kinetics why does the initial reaction rate (vo) resemble the steady state in living cells?
4) Also, in enzyme kinetics the Km value is an indicator of enzyme binding efficiency, is a low or high Km value indicative of better efficiency in living cells? Why?
5) Consider competitive inhibitors. Why does their presence raise the Km value?
In: Biology
Are the following acids, bases, or neutral? NaNO2, HNO2, NaC2H3O2. Please also explain why they are acids or bases. i.e. how do i know if they are proton donors or acceptors?
In: Chemistry
Red blood cells in the lungs are sufficiently oxygenated to carry out aerobe glycolysis. Why do they, however, metabolize glycose to lactate?
In: Chemistry
3. Why is it possible for fructose, galactose, mannose and even glycerol to be catabolized via glycolysis? Provide specific explanation for each compound
In: Chemistry
State if each of the following processes produce or consume ATP:
a. pyruvate forms acetyl CoA
b. First six reactions of glycolysis
In: Biology
What energy system recovers most slowly with repeated sprints and why?
a) glycolysis
b)oxidative phosphorylation
c)phosphocreatine hydrolysis
In: Anatomy and Physiology
4.
a. Which steps in gluconeogenesis DO NOT occur in the
cytoplasm?
b. Gluconeogenesis can synthesize glucose because it is
energetically favorable in the cell. It is
energetically favorable because it bypasses the three irreversible
steps of glycolysis. Which
enzymes in gluconeogenesis are involved in bypass these
irreversible reactions?
c. Fructose 2,6-bisphosphate (F-2,6-BP) helps regulate both
glycolysis and gluconeogenesis. F-
2,6-BP levels are determined by a single polypeptide containing
both phosphofructokinase 2
(PFK2) and fructose bisphosphatase 2 (FBPase2). How is the level of
F-2,6-BP regulated?
In: Biology