LAB 3: BIOLOGICAL MOLECULES

Question 1

Primary four elements

Answer 1

oxygen, hydrogen, carbon, and nitrogen

Question 2

molecules that are small, simple molecules that never contain carbon atoms arranged in chains or rings
EX: h20

Answer 2

inorganic

Question 3

are large complex molecules that always contain carbon atoms , often arranged in chains or rings

Answer 3

organic

Question 4

a group of atoms responsible for the characteristic reactions of a particular compound.

Answer 4

functional group

Question 5

the four major classes of organic molecules

Answer 5

carb, lipid, protein, nucleic acids

Question 6

three types of carb

Answer 6

mono glucose
di sucrose
poly starch

Question 7

distinguishing factor of lipids

Answer 7

hydrophobic

Question 8

individual amino acids that make up a protein are linked together by

Answer 8

peptide bond

Question 9

Benedicts test, test for

Answer 9

presence of sugar, bright blue color

Question 10

Benedicts test results

Answer 10

positive- green, yellow, orange, red

negative- blue

Question 11

Iodine test, test for

Answer 11

presence of starch, yellow color

Question 12

Iodine test results

Answer 12

positive-blue black

negative-golden amber color

Question 13

Sudan III test test for

Answer 13

lipids

Question 14

Sudan III test results

Answer 14

negative-red layer top

positive-solid red color

Question 15

Biuret test for

Answer 15

presence of protein, pale blue color

Question 16

Biuret test results

Answer 16

negative-pale blue color

positive- pale violet color

Question 17

protein are polymers composed of monomers called _______, there are 20 different XXXXX found in proteins of living things

Answer 17

amino acids