Subject: “Biochemistry with fundamentals of physical and colloid chemistry” Teachers I. Kalinin and V. Zhulai. Block of tests Variant №1

Question 1. Which of aminoacids mentioned below are essential?

1 – Tyr, 2 – Ser, 3 – Ile, 4 – Cys.

Question 2. Which of aminoacids mentioned below are glucogenic?

1 – Arg, 2 – Leu, 3 – Trp, 4 – Lys.

Question 3. Which substance is a precursor for biosynthesis of alanine?

1. valine

2. piruvate

3. acetone

4. proline

Question 4. Which substance is a precursor for biosynthesis of asparagine?

1. alanine

2. glycine

3. arhynine

4. asparaginic acid

Subject: “Biochemistry with fundamentals of physical and colloid chemistry” Teachers I. Kalinin and V. Zhulai. Block of tests Variant №2

Question 1. Which of aminoacids mentioned below are essential?

1 – Lys, 2 – Glu, 3 – Cys, 4 – Tyr.

Question 2. Which of aminoacids mentioned below are ketogenic?

1 – Ala, 2 – Arg, 3 – Tyr, 4 – Thr.

Question 3. Which substance is a precursor for biosynthesis of asparaginic acid?

1. arginine

2. Piruvate

3. oxaloacetic acid

4. metionine

Question 4. Which substance is a precursor for biosynthesis of glutamin?

1 Glycine

2 glutaminic acid

3 lysine

4 proline

Question 5. Which substance is a direct precursor for biosynthesis of succinic acid?

1. malic acid

2. succinylCoA

3. isocitric acid

4. α-ketoglutaric acid

Question 6. Which of aminoacids mentioned below during oxidative splitting turn into piruvate?

1 – Ala, 2 – Arg, 3 – Asn, 4 – Gln.

Question 7. Which of aminoacids mentioned below during oxidative splitting turn into oxaloacetic acid?

1 – Asp, 2 – Phe, 3 – Glu, 4 – Gly.

Question 8. Which group of enzymes catalyze reversible transformation of aminoacids into keto-acids?

1 dehydrogenases

2 aminoacyltransferases

3 phosphotransferases

4 aminotransferases

5 decarboxylases

Question 5. Which of aminoacids mentioned below during oxidative splitting turn into oxaloacetic acid?

1 – Ala, 2 – Arg, 3 – Asn, 4 – Gln.

Question 6. Which of aminoacids mentioned below during oxidative splitting turn into fumaric acid?

1 – Val, 2 – Thr, 3 – Phe, 4 – Pro.

Question 7. Which enzyme catalyze reversible transformation of keto-acids into aminoacids?

1 aminopeptidase

2 carboxypeptidase

3 aminotransferase

4 aipeptidase

5 himotrypsine

Question 8. Which of the substances mentioned below belong to keton bodies?

1 aceto-acetate

2 piruvate

3 oxaloacetic acid

4 aceto-acetyl CoA

Subject: “Biochemistry with fundamentals of physical and colloid chemistry” Teachers I. Kalinin and V. Zhulai. Block of tests Variant №3

Question 1. Which of aminoacids mentioned below are non-essential?

1 – Lys, 2 – Tyr, 3 – Trp, 4 – Thr.

Question 2. Which of aminoacids mentioned below are glucogenic?

1 – Leu, 2 – Lys, 3 – Trp, 4 – Pro.

Question 3. Which substance is a precursor for biosynthesis of glutaminic acid?

1. acetyl CoA

2. threonine

3. oxaloacetic acid

4. α-ketoglutaric acid

Question 4. Which substance is a precursor for biosynthesis of glycine?

1. arhynine

2. serine

3. hystidine

4. piruvate