Subject: “Biochemistry with fundamentals of physical and colloid chemistry” Teachers V. Zhulai and a. Arkhypov block of tests Variant №4

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

1 – Arg,

2 – His,

3 – Ser,

4 – Phe.

Question 2. Which of aminoacids mentioned below are ketogenic?

1 – Lys,

2 – Ile,

3 – His,

4 – Val.

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

1. aceto-acetate

2. glutaminic acid

3. 3-phosphoglicerolic acid

4. leucine

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

1. arhynine

2. metionine

3. glycine

4. proline

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

1 – Asp,

2 – Phe,

3 – Glu,

4 – Gly.

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

1 – Val,

2 – Thr,

3 – Phe,

4 – Pro.

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

1 transaminase

2 Aminopeptidase

3 urioxydase

4 xantinoxidase

5 aminohydrolase

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

1 fumaric acid

2 α-ketoglutaric acid

3 β-hydroxybutyrate

4 acetyl CoA

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

1 – Ile,

2 – His,

3 – Pro,

4 – Tyr.

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

1 – Lys,

2 – Met,

3 – Pro,

4 – Trp.

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

1 aminoacyltransferases

2 decarboxylases

3 dehydrogenases

4 phosphotransferases

5 transaminases

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

1 oxaloacetic acid

2 acetone

3 acetyl CoA

4 succinyl CoA

Subject: “Biochemistry with fundamentals of physical and colloid chemistry” Teachers V. Zhulai and a. Arkhypov block of tests Variant №5

Question 1. Which of aminoacids mentioned below are cyclic?

1 – Arg,

2 – Met,

3 – Phe,

4 – Ser.

Question 2. Which of aminoacids mentioned below are sulphur-containing?

1 – Leu,

2 – Val,

3 – Met,

4 – Lys.

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

1. serine

2. glutaminic acid

3. leucine

4. lysine

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

1. alanine

2. glycine

3. tyrosine

4. glutaminic acid

Subject: “Biochemistry with fundamentals of physical and colloid chemistry” Teachers V. Zhulai and a. Arkhypov block of tests Variant №6

Question 1. Which of aminoacids mentioned below are hetero-cyclic?

1 – Ser,

2 – Trp,

3 – Thr,

4 – Tyr.

Question 2. Which of aminoacids mentioned below are dicarboxylic?

1 – Asp,

2 – Ala,

3 – Gln,

4 – Val.

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

1. fumaric acid

2. phenylalanine

3. α-ketoglutaric acid

4. treonine

Question 4. Which substance is a precursor for biosynthesis of aceto-acetate?

1 β-hydroxybutyrate

2 β-hydroxymetylglutarylCoA