biolab

Question 1

where does cholesterol synthesis take place?

Answer 1

mainly in liver , and using simple molecules like acetate.
it also derived from dietary intake

Question 2

what is cholesterol circulated with into circulation?

Answer 2

specific liboproteins

Question 3

role of thyroid?

Answer 3

synthesis and degradation of cholesterol and triglycerides

Question 4

what does bile acid do?

Answer 4

polar derivative of cholesterol that acts as detergents in the intestine, emulsifying dietary fats to make the more readily accessible to digestive lipases.

Question 5

cholesterol uses-

Answer 5

important component of the cell membrane assisting in establishing proper membrane permeability and flexibility.

Question 6

normal range of cholesterol in human-

Answer 6

150-250 mg/dl

Question 7

primary factor for coronary heart disease-

Answer 7

cholesterol

Question 8

elevated levels of serum cholesterol are associated with?

Answer 8

atherosclerosis, necrosis, diabetes mellitus.

Question 9

low levels of cholesterol are associated with?

Answer 9

anaemia, hyperthyroidism, malabsorbtion

Question 10

cholesterol esters + cholesterol esterase->

Answer 10

cholesterol + fatty acids

Question 11

cholesterol + o2 + cholesterol oxidase ->

Answer 11

cholest-4-ene-3-one + h2o2

Question 12

2h2o2 + phenol + 4-AAP + POD ->

Answer 12

quinononeimine dye(red) + h2o

Question 13

what wavelength is absorbance of this quinoneimine dye measured at

Answer 13

505 (490-510) nm