24. Spot question
Certain isoforms of cytochrome P450
(eg, CYP1A1) are particularly involved
in the metabolism of polycyclic
aromatic hydrocarbons (PAHs) and
related molecules; for this reason
they were formerly called as ?
3/7/2013 Biochemistry For Medics 24
26. Spot question
Several powerful oxidants are
produced during the course of
metabolism, in both blood cells and
most other cells of the body. These
include superoxide (O2 ), hydrogen
peroxide (H2O2), peroxyl radicals
(ROO ), and hydroxyl radicals (OH )
and are referred to as ?
3/7/2013 Biochemistry For Medics 26
28. Spot question
In the retina, retinaldehyde functions
as the prosthetic group of the light-
sensitive opsin proteins, forming
rhodopsin (in rods) ………...What is it
called in cones?
3/7/2013 Biochemistry For Medics 28
30. Spot question
Tremors, slurred speech, blurred
vision, coma, and ultimately death
are the symptoms
of………………….intoxication
3/7/2013 Biochemistry For Medics 30
38. Spot question
A measure of its digestibility, based
on the extent to which it raises the
blood concentration of glucose
compared with an equivalent amount
of glucose or a reference food such as
white bread or boiled rice is called--?
3/7/2013 Biochemistry For Medics 38
42. Prosthetic groups are:
(a) required by all enzymes in the cell
(b) loosely bound to enzymes via
hydrogen bonds
(c) sites on the enzyme molecule that
permit allosteric modification of
enzyme activity
(d) tightly bound to enzymes and are
required for their activity
3/7/2013 Biochemistry For Medics 42
43. Answer
(d) Tightly bound and are required for
the enzyme activity
3/7/2013 Biochemistry For Medics 43
44. Spot question
Which of the following promotes
glucose and amino acid uptake by
muscle?
(a) adrenaline
(b) insulin
(c) glucagon
(d) cortisol
3/7/2013 Biochemistry For Medics 44
46. Spot question
Which of the following is not a dietary
antioxidant?
(a) vitamin C
(b) lipoic acid
(c) vitamin K
(d) beta-carotene
3/7/2013 Biochemistry For Medics 46