Free Printable Amino acid

Free Printable Worksheets

Worksheets

Amino acid

Total questions: 20

Worksheet time: 10mins

Name

Class

Date

1.

The bond that joins amino acids are called:

a)

Peptide Bonds

b)

Ester Bonds

c)

Glycosidic Linkages

d)

Phosphodiester Bonds

2.

The number of amino acids used to produce proteins for all living things is:

a)

20

b)

∞

c)

15

d)

42

3.

Which one is an acidic amino acid?

a)

b)

4.

Which one has more than one chiral center?

a)

b)

5.

Hydrophilic amino acid side chains are attracted by

a)

H20 molecules

b)

K molecules

c)

Na molecules

d)

Cl molecules

6.

Amino acid is a compound which has at least one

a)

A. Amino group and one amide group

b)

B. Amino group and one hydroxyl group

c)

C. Amino group and one carboxyl group

d)

D. Hydroxyl group and one carbonyl group

7.

Alanine has two pKa (2.35, 9.87). Isoelectronic point for alanine is at pH=6. Which one is the major form at alanine at pH=6?

a)

b)

c)

d)

8.

Select correct name for the amino acid shown

a)

2-amino-3-methylbutanoic acid

b)

2-amino-3-isopropylpropanoic acid

c)

2-amino-4-methylpentanoic acid

d)

2-aminohexanoic acid

9.

Pick the correct "Non-polar" amino acid

a)

b)

c)

d)

10.

What is an amino acid , which contains a "Base" side chain ?

a)

b)

c)

d)

11.

What is an amino acid , which contains a "Acidic" side chain ?

a)

b)

c)

d)

12.

Isoleucine (2-amino-3-methylpentanoic acid) is an essential amino acid. Draw the structure of isoleucine at pH 2.0 which in acidic medium.

a)

b)

c)

d)

13.

Identify compound W from the reaction.

a)

b)

c)

d)

14.

Threonine reacts with

i- Na

ii- NaOH

iii- HCl

iv- alkaline iodine

a)

i only

b)

i and ii

c)

ii and iii

d)

i, ii, iii and iv

15.

Name the reaction for the formation of peptide bond. What is the by product?

a)

Neutralisation, water

b)

Combustion, carbon dioxide

c)

Condensation, water

d)

Formation, water

16.

The structural formula of glutamic acid is

2-aminopentanedioic acid. Choose the correct statement(s)

I The isoelectric point of the amino acid is at pH 7.0.

II The compound liberates nitrogen gas when it reacts with sodium nitrate and hydrochloric acid.

III In acidic medium glutamic acid exist as cation with +1 charge

IV in basic medium glutamic acid exist as anion with -2 charge

a)

I and II

b)

II and III

c)

II, III and IV

d)

all of the answers correct

17.

What is zwitterion?

a)

Its a neutral compound

b)

Its a cation

c)

Its an anion

18.

Which of the following statement(s) is/are TRUE about phenylalanine, 2-amino-3-phenylpropanoic acid?

a)

It can rotate plane-polarised light

b)

It exists as an anion at pH 5.5

c)

It dissolves easily in dichloromethane, CH2Cl2

d)

all of the above are true

19.

By referring to the structure,

a)

In acidic solution, anion predominates

b)

In basic solution, cation predominates

c)

In neutral solution, zwitterion predominates

d)

all of the answers above are correct

20.

What is the correct sequence for the following tripeptide?

a)

b)

c)

Reset

Similar Resources on Wayground

20 questions

CARBONYL COMPOUNDS

Worksheet

•

10th Grade - University

17 questions

Unit 5: Periodic Table

Worksheet

•

KG - University

20 questions

Acids and Bases

Worksheet

•

University

20 questions

PRE UPS 3: CHEMISTRY DK014

Worksheet

•

University

15 questions

Teknologi Fermentasi

Worksheet

•

University

20 questions

UPS Trail Chapter 1: MATTER

Worksheet

•

University

18 questions

Revisão Farmacologia dos sistemas

Worksheet

•

University

17 questions

ATOMS and ISOTOPES

Worksheet

•

University