3 Aceto-acetyl CoA

4 all mentioned above

Question 5. Which of aminoacids mentioned below during oxidative splitting turn into α-ketoglutaric acid?

1 – Ser,

2 – Gln,

3 – Gly,

4 – Asp.

Question 6. Which of aminoacids mentioned below during oxidative splitting turn into aceto-acetyl CoA?

1. Ala

2. Arg

3. Lys

4. Met

Question 7. Which enzyme catalyze protein hydrolysis in stomach?

1. carboxypeptidase

2. pepsine

3. trypsine

4. hymotrypsine

Question 8. Which enzyme cuts C-ending amino-acids in proteins?

1. carboxypeptidase

2. dipeptidase

3. aminopeptidase

4. hymotrypsine

Question 5. Which of aminoacids mentioned below during oxidative splitting turn into α-ketoglutaric acid?

1 – Val,

2 – Thr,

3 – Phe,

4 – Pro.

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

1. Ala and Asn

2. Arg and Lys

3. Leu and His

4. Trp and Thr

Question 7. Which enzyme catalyze protein hydrolysis in bowels?

1. decarboxylase

2. dehydrogenase

3. pepsine

4. trypsine

Question 8. Which method may be used for determination of aminoacids?

1. lyofilization

2. distillation

3. homogenization

4. chromatography

Subject: “Biochemistry with fundamentals of physical and colloid chemistry” Teachers V. Zhulai and a. Arkhypov block of tests Variant №7

Question 1. Which of aminoacids mentioned below are aliphatic?

1 – Trp,

2 – Thr,

3 – Tyr,

4 - His.

Question 2. Which of aminoacids mentioned below are diaminic?

1 – Leu,

2 – Val,

3 – Met,

4 – Lys.

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

1. oxaloacetic acid

2. succinic acid

3. glutaminic acid

4. leucine

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

1. oxaloacetic acid

2. fumaric acid

3. aceto-acetate

4. α-ketoglutaric acid

Subject: “Biochemistry with fundamentals of physical and colloid chemistry” Teachers V. Zhulai and a. Arkhypov block of tests Variant №8

Question 1. Which of aminoacids mentioned below are monoaminomonocarboxylic?

1– Lys,

2 – Arg,

3 – Gly,

4 – Glu.

Question 2. Which substance is a direct precursor for biosynthesis of citric acid?

1. fumaric acid and succinyl CoA

2. malic and succinic acids

3. isocitric and α-ketoglutaric acids

4. acetyl CoA and oxaloacetic acid

Question 3. Which substance is a precursor for biosynthesis of β-hydroxybutyrate?

1. Aceto-acetate

2. Acetone

3. α-ketoglutaric acid

4. Alanine

Question 4. Which of aminoacids mentioned below during oxidative splitting turn into acetyl CoA?

1. Arg and Asp

2. Cys and Leu

3. Glu and Phe

4. Ile and Lys.

Question 5. Which of aminoacids mentioned below during oxidative splitting turn into aceto-acetyl CoA?

1 – Phe,

2 – Thr,

3 – Ser,

4 – Pro.

Question 6. What are the functions of aminoacids in organism?

1. structural components of biomembranes

2. structural components of proteins

3. store of metabolic energy

4. all mentioned above

Question 7. Which enzyme catalyze protein hydrolysis in bowels?