„Certified by”

Deputy of the chair___________ N. Melnicova

„19” November, the year 2007.

BLOCK OF TESTS Variant №4

Question 1. What does it mean absorption?

1 Sorption of substance by whole body of sorbent

2 Sorption of steams by solids

3 Chemical reaction between adsorptive and adsorbent

4 Sorption of liquids

Question 2. Which amino-acids are essential?

1 Arhynine

2 Proline

3 Cystine

4 Metionin

Question 3. What does it mean entropy?

1 Colloid defense

2 Defense of colloids from solids

3 The sum of inner energy and work of extension of system till some volume

4 Measure of dispersion of energy

Question 4. Which vitamin is water -soluble?

1 Thiamine

2 Calciferol

3 Retinol

4 Filohinon

Question 5. Which elements are microelements?

1. Ca

2. Mg

3. Mn

4. Na

Question 6. Which substance is coferment of oxydoreductases?

1 Folic asid

2 Piridoxynic asid

3 NAD⁺

4 Pantotenic asid

Question 7. How many ATP-molecules are synthesized during anaerobic splitting of 1 molecule of glucose?

1 – 1;

2 – 2;

3 – 4;

4 – 6.

Question 8. Fermentation is the process of:

1 Cellular respiration

2 Aerobic splitting of organic substances with end products H₂O and CO₂

3 Anaerobic splitting of organic substances accompanied by ATP synthesis

4 Oxidative phosphorylation

Question 9. Which enzyme promote including glycerol into glycolysis:

1 Glycerol – 3 phosphate dehydrogenase

2 Phosphoglycerate – kinase

3 Phosphoglycerate-mutase

4 Glyceraldehyde-phospate-dehydrogenase

Question 10. What enzymes regulate the speed of Krebs’ cycle

1 Piruvate-dehydrogenase and isocitrate- dehydrogenase

2 Lactate-dehydrogenase and malate-dehydrogenase

3 Succinate – dehydrogenase and aconitase

4 Hexokinase and Enolase

Question 11. How many ATP molecules are synthesized in respiratory chain during transmission of 1 pair of electrons from FADH₂ on O₂?

1 – 2;

2 – 3;

3 – 4;

4 – 6.

Question 12. Which substance belongs to tricarboxylic oxyacids?

1 Isocitric acid

2 Isoleucine

3 Isomerase

4 Isotope

Question 13. Where reactions of pentose cycle take place?

1 In lysosomes

2 In mitochondrias

3 In ribosomes

4 In cytoplasm

Question 14. Which of aminoacids mentioned below are cyclic?

1 – Arg,

2 – Met,

3 – Phe,

4 – Ser.

Question 15. Which of aminoacids mentioned below are sulphur-containing?

1 – Leu,

2 – Val,

3 – Met,

4 – Lys.

Question 16. Which substance is a precursor for biosynthesis of cysteine?

1. serine

2. glutaminic acid

3. leucine

4. lysine

Question 17. Which substance is a precursor for biosynthesis of proline?

1. alanine

2. glycine

3. tyrosine

4. glutaminic acid

Question 18. Which of aminoacids mentioned below during oxidative splitting turn into α-ketoglutaric acid?

1 – Val,

2 – Thr,

3 – Phe,

4 – Pro.

Question 19. 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 20. Which enzyme catalyze protein hydrolysis in bowels?

1. decarboxylase

2. dehydrogenase

3. pepsine

4. trypsine

Question 21. Which method may be used for determination of aminoacids?

1. lyofilization

2. distillation

3. homogenization

4. chromatography

Question 22. What substance is a precursor of urea in ornithin Krebs cycle?

1. alanine

2. arhynine

3. citrulline

4. glutaminic acid

Question 23. What is the main end product of Nitrogen metabolism in ruminants?

1. alantoine and urea

2. ammonia

3. glyoxylic acid

4. uric acid

Question 24. Which nitrogenous base belongs to purines?

5. A

6. C

7. T

8. U

Question 25. What is the function of blood thromboplastin?

1. Transport of different substances

2. Transport of O₂ and CO₂

3. Bonding of antigens

4. Plasmozyme transformation into thrombin

Question 26. Which buffer system prevails in blood?

1. Bicarbonated

2. Phosphated

3. albuminous

4. hemoglobinous

Question 27. What are physiological borders of pH in blood of fetus of mammals?

1. 7.20-7.60

2. 7.36-7.50

3. 7.85-7.95

4. 6.00-6.80

Question 28. Which hormones are peptides?

1. Adrenalin

2. Estrogenes

3. Glucocorticoids

4. Oxitocin

Question 29. Which hormone is produced in parathyroid gland?

1. Oxitocin

2. Parathyroid hormone

3. Thyrocalcitonin

4. Thymosine

Question 30. Which protein prevails in erythrocytes?

1. Collagen

2. Hemoglobin

3. Ovo-albumine

4. Ovo-vitelline

NATIONAL AGRICULTURAL UNIVERSITY

Chair of animal biochemistry, quality and safety of agricultural products

Faculty of veterinary medicine

Speciality 7.130501 “Veterinary medicine”

Full-time tuition

Semester 3 Year 2

Subject: “Biochemistry with fundamentals of physical and colloid chemistry”

Teachers I. Kalinin, V. Zhulai.