chem 2

Question 1

What 3 fragments does biotin consist of?
1. Urea
2. Tetrahydrothiophene
3. Valerianic acid
4. Caproic acid

Answer 1

1. Urea
2. Tetrahydrothiophene
3. Valerianic acid

Question 2

What 2 compounds are formed when α-hydroxy and α-amino acids are
heated?
1. Lactide
2. Lactam
3. Diketopiperazine
4. Lactone

Answer 2

1. Lactide
2. Diketopiperazine

Question 3

. Specify 2 hydroxy acids:
1. Lactic acid
2. Acetoacetic acid
3. Citric acid
4. Pyruvic acid

Answer 3

1. Lactic acid
2. Citric acid

Question 4

Specify 3 dibasic carboxylic acids:
1. Fumaric acid
2. Acetoacetic acid
3. Succinic acid
4. Tartaric acid

Answer 4

1. Fumaric acid
2. Succinic acid
3. Tartaric acid

Question 5

List 3 heterofunctional compounds:
1. Pyruvic acid
2. Butyric acid
3. Acetoacetic acid
4. Lactic acid

Answer 5

1. Pyruvic acid
2. Acetoacetic acid
3. Lactic acid

Question 6

Identify 3 heterofunctional aromatic compounds:
1. Acetoacetic acid
2. Acetylsalicylic acid
3. Salicylic acid
4. Para-aminobenzoic acid

Answer 6

1. Acetoacetic acid
2. Salicylic acid
3. Para-aminobenzoic acid

Question 7

List 2 derivatives of para-aminobenzoic acid:
1. Anestezin
2. Penicillin
3. Novocaine
4. Dikain

Answer 7

1. Anestezin
2. Novocaine

Question 8

Specify 2 compounds that are oxoacids:
1. Citric acid
2. Pyruvic acid
3. Crotonic acid
4. Acetoacetic acid

Answer 8

2. Pyruvic acid
3. Acetoacetic acid

Question 9

Specify 2 hydroxy acids:
1. Lactic acid
2. Acetoacetic acid
3. Crotonic acid
4. Malic acid

Answer 9

1. Lactic acid
2. Malic acid

Question 10

.Indicate 2 molecules that have chiral centers:
1. Alanine
2. Glycine
3. Serine
4. Acetic acid

Answer 10

1. Alanine
2. Serine

Question 11

Specify 2 aldohexoses:Please select several of the 4 answer options:
1. Galactose
2. Mannose
3. Xylose
4. Erythrose

Answer 11

1. Galactose
2. Mannose

Question 12

Which of these compounds belong to the class of monosaccharides?
Please select several of the 4 answer options:
1. Oxyacids
2. Carboxylic acids
3. Aldehydo alcohols
4. Dihydric alcohols

Answer 12

3. Aldehydo alcohols
4. Dihydric alcohols

Question 13

The calcium salt of which acid is used in medicine in the treatment of
hypocalcemia and allergies?Please select one of the 4 answer options:
1. Glucuronic acid
2. Uronic acid
3. Gluconic acid
4. Glucaric acid

Answer 13

3. Gluconic acid

Question 14

5Indicate 3 monosaccharides that have three chiral centers in the
molecule:Please select several of the 4 answer options:
1. Ribose
2. Xylose
3. Glucose
4. Fructose

Answer 14

1. Ribose
2. Xylose
3. Fructose

Question 15

Choose 3 saturated fatty acids:
1. Palmitic acid
2. Stearic acid
3. Linoleic acid
4. Lauric acid

Answer 15

1. Palmitic acid
2. Stearic acid
3. Lauric acid

Question 16

Specify 2 unsaponifiable lipids:
1. Pinene
2. Oil
3. Menthol
4. Sphingolipid

Answer 16

1. Pinene
2. Menthol

Question 17

Specify 3 compounds classified as terpenes:
1. Nicotine
2. Limonene
3. Pinene
4. Menthol

Answer 17

2. Limonene
3. Pinene
4. Menthol

Question 18

Name two types of bonds involved in the tertiary structure of a protein:
Please select several of the 4 answer options:
1. Etheric bridges
2. Amide bonds
3. Hydrophobic attachments
4. Glycosidic bond

Answer 18

1. Etheric bridges
2. Hydrophobic attachments