bio test

What does diastix paper test for?

• lipid

• protein

• reducing sugar

• glucose

Which of the following positive results of test does not match?

• clinistix:

  pink->purple

• lipid:

  no translucent point left

• albustix:

  green-->brown

• Benedict's test

  clear solution on the top with brick red precipitate at the bottom

Why can ether be used to examine the translucent spots in the test for lipids?

• ether increases heat so the translucent spot evaporates faster

• ether is an organic solvent

• ether is corrosive

All monosaccharides and disaccharides are reducing sugar except ___.

Water is at maximum density at __?

• -6 degree celsius

• 4 degree celsius

• 0 degree celsius

• 6 degree celsius

Which of the following does not help or make cell membrane?

• maltose

• phosphorus

• lipid

• phospholipids

State four uses of triglycerides.

Answer explanation

-reduce heat loss

-act as food reserve

-transport fat fat-soluble vitamins

-shock-absorber for internal organs

Why glycogen and starch are good storage form?

Answer explanation

-compact to pack many sugar units in a small unit

-water insoluble, won't affect the osmotic balance

Triglycerides are often stored in fat-containing tissues called ____ _____.

Excess amino acids cannot be stored in the body. The excess amino acids are broken down by___ to form urea. This process is called ____.(one blank between two answers)