Multiple Choice QuestionsWhich one of the following is not true for enzymes?
They act on a specific substrate
They are made up of fat and sugar
They act at a specific temperature
They act at a specific pH
Simple storage protein that coagulates upon heating but remains soluble in dilute salt solution is correctly exemplified by
globulin
albumin
histone
collagen
Higher animals cannot synthesize few fatty acids which are very essential for their growth and deveiopment. These fatty acids are typically
saturated
cyclic
unsaturated
branched
What are ketone bodies?
Acetoacetic acid, acetone and beta-hydroxybutyric acid
Nicotinic acid, folic acid and ascorbic acid
Acetone, beta-hydroxybutyryl Co-A and acetoacetic acid
Acetic acid, acetone and beta-hydroxybutyric acid
A.
Acetoacetic acid, acetone and beta-hydroxybutyric acid
The acetyl Co- A produced by mitochondrial -oxidation of fatty acids enters the Krebs cycle to produce energy, but that is not the only fate of acetyl Co- A. In liver mitochondria, some acetyl Co- A is converted to acetoacetate, - hydroxy butyrate and acetone, collective called ketone bodies, which are transported to other tissues (e.g., brain, muscle or heart) where they are converted back to acetyl Co- A to serve as an energy source.
Transition state structure of the substrate formed during an enzymatic reaction is
transient but stable
permanent but unstable
transient and unstable
permanent and stable
Switch
