Transamination

Q. The amino acid which plays a central role in nitrogen metabolism is/are

1. $\alpha$-ketoglutaric acid
2. double aminated keto acids
3. aspartic acid
4. glutamic acid

Q. The main amino acid used for transamination is

1. Tyrosine

2. Glutamic acid

3. Tryptophan

4. Alanine

Q.

Amino acids have both an amino group and a carboxyl group in their structure. Which amongst the following is an amino acid ?

(a) Formic acid (b) Glycerol

(c) Glyolic acid (d) Glycine

Q.

Can amino acids be converted to acetyl CoA?

Q.

Which is the main amino acid from which transfer of NH₂ occurs?

Q. Which among the following is an amide?

1. Aspartic acid
2. Glutamic acid
3. Glutamine
4. $\alpha$-ketoglutaric acid

Q. The amino acid which plays a central role in nitrogen metabolism is/are

1. glutamic acid
2. $\alpha$-ketoglutaric acid
3. aspartic acid
4. double aminated keto acids

Q. Assertion : Proteins are organic components.
Reason : Amino acids are the basic units of proteins formed by hydrolysis.

1. Assertion and reason both are correct , but reason is not the correct explanation for assertion.
2. Assertion and reason is correct, reason is correct explanation of assertion
3. Assertion and reason both are wrong
4. Assertion is correct but reason if wrong

Q. What kind of compound are enzymes?

1. Poly-nitro heterocyclic compounds
2. Hydrocarbons
3. Polysaccharides
4. Polypeptides

Q. Nitrogen gets excreted in humans in which form?

1. Ammonium ion
2. Uric acid
3. Ammonia
4. Urea

Q. Match the column and choose the appropriate match.

	List I		List II
A	4C Compound	1	Acetyl Co-A
B	2C Compound	2	Pyruvate
C	5C Compound	3	Citric acid
D	3C Compound	4	$\alpha -$keto glutaric acid
		5	Malic acid

1. A- 5, B- 1, C- 4, D- 2
2. A - 5, B- 4, C- 1, D- 2
3. A- 1, B- 5, C- 4, D- 2
4. A- 5, B- 1, C- 2, D- 4

Q. A non-protein amino acid is

1. Hydroxyproline
2. Cystine
3. Gamma-aminobutyric acid
4. Hydroxylysine

Q. Match column I (enzymes) column II (phases/steps of dark reaction) (PGA -Phosphoglyceric acid, G3P - glyceraldehyde-3-phosphate, DHAP-Dihydroxyacetone phosphate, PEP -Phospho enol Pyruvate)

	Column I		Column II
a.	RuBisCO.	i.	Addition of iP to 3-PGA
b.	Phosphoglycerate kinase	ii.	Addition of $C{O}_2$ to PEP
c.	Triose phosphate isomerase.	iii.	Fixation of $C{O}_2$
d.	PEP carboxylase	iv.	Conversion of DHAP to G3P

1. a-i, b-iii, c-ii, d-iv
2. a-ii, b-iv, c-i, d-iii
3. a-iii, b-i, c-iv, d-ii
4. a-iii, b-ii, c-i, d-iv

Q. Which of the following is an example of dehydration synthesis?

1. Starch $\to$ Glucose
2. Cellulose $\to$ Carbohydrate
3. Amino $\to$ Polypeptide
4. DNA $\to$ Nucleotide
5. Glycerol $\to$ Fatty Acids

Q. The nitrogen is the essential component of

1. Carbohydrates
2. Fats
3. Proteins
4. Oil

Q. Which among the following is an amide?

1. Aspartic acid
2. Glutamic acid
3. Glutamine
4. $\alpha$-ketoglutaric acid

Q. Which element is normally absent in proteins?

1. C
2. N
3. S
4. P

Q.

From______acid, more than 17 amino acids are formed through transamination.

1. pyruvic acid

2. acetic acid

3. aspartic acid

4. glutamic acid

Q. When all the peptide bonds of a protein have been broken down, the result would be _________.

1. Peptides
2. Polypeptides
3. Oligopeptides
4. Amino acids

Q. Which among the following is an amide?

1. Aspartic acid
2. Glutamic acid
3. Glutamine
4. $\alpha$-ketoglutaric acid

Q. _________enzyme catalyzes the given reaction.
Glutamic acid + Oxaloacetic acid $⟶$ $\alpha$ - ketoglutaric acid + Aspartic acid.

1. Dehydrogenase
2. Nitrate reductase
3. Aminotransferase
4. Nitrite reductase

Q. The formation of protein can be considered as

1. Dehydration synthesis
2. Dehydration analysis
3. Hydration synthesis
4. Hydration analysis