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Catabolism of Amino Acid Nitrogen

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

Amino Acids have an alpha carbon (α-carbon) which is attached to 4 different groups. Which of the following is not a group that is attached to the alpha carbon?

a)

Amino Group

b)

Carboxyl Group

c)

R Group

d)

Hydrogen Atom

e)

Hydroxyl Group

2.

Which group on the amino acid side chain dictates the function of the formed amino acid?

a)

R group

b)

Amine group

c)

Carboxyl group

d)

Hydrogen atom

3.

Which gas is produced in the catabolism of amino acids?

a)

Oxygen

b)

Nitrogen

c)

Methane

d)

Helium

4.

What is the function of the Carbon portion in amino acid degradation?

a)

Energy source

b)

Transamination

c)

Building block

d)

Synthesis

5.

What happens to the Nitrogen portion of an amino acid during degradation?

a)

Energy source

b)

Transamination

c)

Building blocks

d)

Synthesis

6.

Phenylalanine is used to synthesize which of the following?

a)

Tyrosine

b)

Asparagine

c)

Proline

d)

Serine

7.

Methionine donates a sulfur atom to form which of the following Amino Acid

a)

Cysteine

b)

Tyrosine

c)

Serine

d)

Aspartate

8.

How many Amino Acids are considered essential?

a)

9

b)

11

c)

12

d)

8

9.

Which of the following is a Non-essential amino acid?

a)

Aginine

b)

Tryptophan

c)

Methionine

d)

Tyrosine

10.

Which amino acid is considered as both an essential and non-essential amino acid?

a)

Tryptophan

b)

Arginine

c)

Histidine

d)

Isoleucine

11.

These are known as the inactive forms of proteases and act as the precursors of smaller active enzymes

a)

Zymogens

b)

Chromogens

c)

Micelles

d)

Parietal cells

12.

If pepsin is a digestive enzyme that originates from the stomach, where does trypsin originate from?

a)

Stomach

b)

Pancreas

c)

Small intestine

d)

Large intestine

13.

Digestive Enzymes digest themselves as well as dietary proteins. Digestive enzymes cannot digest intestinal cells that originate from the lumen

a)

Statement 1 is correct

b)

Statement 2 is correct

c)

Both are correct

d)

Both are false

14.

By which transport system does the absorption of amino acids follow?

a)

Secondary-dependent transport system

b)

Primary-dependent transport system

c)

Active transport

d)

Osmotic pressure

15.

Amino acids depend on which ion for transport into cells?

a)

Potassium

b)

Sodium

c)

Calcium

d)

Chloride

16.

During the "Fed State" excess in degraded component amino acids are converted into what and store where?

a)

Lipids, Adipose tissue

b)

Glycogen, Liver

c)

Bile Salts, Gall bladder

d)

Mavelonic acid, Pancreas

17.

During the "Fasting state" what is released from adipose tissue to be used as a substrate in gluconeogenesis?

a)

Glycerol

b)

Glucose

c)

Glycogen

d)

ATP

18.

Transamination reactions are irreversible

a)

True

b)

False

19.

Which of the following amino acids do NOT undergo transamination?

a)

Threonine

b)

Lysine

c)

Isoleucine

d)

Tryptophane

20.

Activated Vitamin B6 is scientifically known as:

a)

Pyridoxal Phosphate

b)

Hydroxyal Phosphate

c)

Transaminase Phosphate

d)

Pyridoxamine Phosphate

21.

Which substance provides nitrogen for transamination or Oxidative deamination?

a)

Glutamate

b)

Glycerol

c)

Glucagon

d)

Glucose

22.

The rate limiting step of the Krebs-Henseleit cycle is found where?

a)

Cytosol

b)

Endoplasmic reticulum

c)

Mitochondria

d)

Ribosome

23.

Which of the following are structurally part an amino acid, but is not included in the 20 amino acids list?

a)

Ornithine

b)

Citrulline

c)

Arginosuccinate

d)

Fumarate

24.

This is the carbon backbone of fumarate

a)

Aspartate

b)

Asparagine

c)

Citrulline

d)

Arginine

25.

During fasting state this is the main amino acid substrate for urea

a)

Arginine

b)

Alanine

c)

Asparagine

d)

Aspartate