Shikimate Pathway

Question 0

Building block of shikimate pathway

Answer 0

C6C3 phenylpropane unit

Question 1

Central intermediate in shikimate pathway

Answer 1

Shikimic acid

Question 2

Building block for alkaloidal structures

Answer 2

L-Trp

Question 3

Precursors of L-DOPA and DOPAchrome

Answer 3

L-Phe and L-Tyr

Question 4

Precursor of catecholamines

Answer 4

L-dopa

Question 5

Precursor of melanin

Answer 5

Dopachrome

Question 6

Precursor of tannins

Answer 6

Gallic acid

Question 7

Plant polyphenols which has the ability to precipitate proteins

Answer 7

Tannins

Question 8

Botanical origin of witch hazel leaves

Answer 8

Hamamelis virginiana

Question 9

Botanical origin of nutgall

Answer 9

Rhus chinensis

Question 10

Botanical origin of mangrove

Answer 10

Rhizophora mangle

Question 11

Color formed upon rxn with ferric salts

Answer 11

Dark blue (H) to greenish black (NH)

Question 12

Color formed upon rxn with potassium ferricyanide and ammonia

Answer 12

Deep red

Question 13

Types of tannins

Answer 13

Hydrolyzable and non-hydrolyzable

Question 14

Other name for hydrolyzable tannins

Answer 14

Pyrogallotannins

Question 15

Intermediate where pyrogallotannins are derived

Answer 15

Dehydroshikimic acid

Question 16

Classes of hydrolyzable tannins

Answer 16

Gallotannins and ellagitannins

Question 17

Esters of gallic acid with polyalcohol typically glucose

Answer 17

Gallotannins

Question 18

Hexahydroxydiphenic acid esters by oxidative coupling of neighboring gallic units attached to D-glucose

Answer 18

Ellagitannins

Question 19

Gallotannins arise from ?

Answer 19

Quinic acid

Question 20

Other names for non-hydrolyzable tannins

Answer 20

Condensed tannins, proanthocyanidins, pycnogenols, leucoanthocyanidins

Question 21

Non-hydrolyzable are derived from ?

Answer 21

Flavonoid precursors

Question 22

Product of polymerization of nonhydrolyzable tannins

Answer 22

Phlobaphenes

Question 23

Test for total tannin analysis

Answer 23

Goldbeater’s skin test/Heme analysis

Question 24

Color of spot of tannins in short UV light

Answer 24

Dark purple

Question 25

Color formed upon rxn with Folin-Ciocalteu reagents

Answer 25

Blue spots

Question 26

Color formed upon reaction of tannins with NH3 vapor

Answer 26

Blue to gray spot

Question 27

Uses of tannins

Answer 27

Leather industry, antidote for alkaloidal poisoning, astringent, ink industry

Question 28

Most permanent black ink made by mixing iron salt with gallic acid and tannin in water to form ferous tannate

Answer 28

Iron-gall ink

Question 29

Formed when little ferrous tannate ink dries

Answer 29

Black insoluble ferric tannate

Question 30

Other names for folic acid

Answer 30

Folacin, pteroylglutamic acid, vit B9

Question 31

Conjugate of pteridine deriv, PABA, and glutamic acid

Answer 31

Folic acid

Question 32

Folic acid deficiency

Answer 32

Megaloblastic anemia

Question 33

Functions via a series of folate coenzymes as a carrier of one-carbon groups which are involved in amino acid and nucleotide metab

Answer 33

Tetrahydrofolic acid

Question 34

Folic acid inhibitors

Answer 34

Sulfanilamide and other antibacterial sulpha drugs, trimethoprim, pyrimethamine, methotrexate

Question 35

Inhibit dihydropteroate synthase

Answer 35

Sulfanilamide and other antibacterial sulpha drugs

Question 36

Enzyme incorporating PABA

Answer 36

Dihydropteroate synthase

Question 37

Antibacterial; Inhibit dihydrofolate reductase

Answer 37

Trimethoprim

Question 38

Antimalarial; inhibit dihydrofolate reductase

Answer 38

Pyrimethamine

Question 39

Blocks or prevents DNA methylation; blocks pyrimidine biosynthesis

Answer 39

Methotrexate

Question 40

Counteract folate-antagonist action of anticancer agent

Answer 40

N5-formyl-tetrahydrofolic acid or folinic acid or leucovorin

Question 41

Isolated from Streptomyces venezuelae; one of first broad spectrum antibiotics; can cause blood disorders

Answer 41

Chloramphenicol

Question 42

Enzyme that catalyzes peptide bond formation

Answer 42

Peptidyl transferase

Question 43

Shikimic acid is synthesis blah blah of antiviral what

Answer 43

Oseltamivir

Question 44

Inhibitor of EPSP synthase

Answer 44

Glyphosate

Question 45

MOA of chloramphenicol

Answer 45

Block peptidyl transferase