Biology test

What is the role of amylase in digestion?

• • A. Breakdown of proteins

• • B. Breakdown of lipids

• • C. Breakdown of carbohydrates

• • D. Breakdown of nucleic acids

Where does the majority of nutrient absorption occur?

• • A. Stomach

• • B. Mouth

• • C. Small intestine

• • D. Large intestine

What is the main function of bile in digestion?

• • A. Neutralize stomach acid

• • B. Emulsify fats

• • C. Digest proteins

• • D. Break down carbohydrates

Which enzyme is responsible for breaking down proteins in the stomach?

• • A. Lipase

• • B. Pepsin

• • C. Amylase

• • D. Maltase

What is peristalsis?

• • A. Secretion of enzymes

• • B. Mixing of food with gastric juice

• • C. Wave-like muscle contractions that move food

• • D. Production of bile

What are enzymes?

• a) Proteins that speed up chemical reactions

• b) Lipids that catalyze biological processes

• c) Carbohydrates involved in cellular metabolism

• d) Nucleic acids responsible for energy production

Which of the following best describes the lock and key model of enzyme action?

• a) Enzymes change shape to fit the substrate

• b) Enzymes remain unchanged after catalyzing a reaction

• c) Enzymes bond irreversibly to the substrate

• d) Enzymes have specific active sites that bind to substrates

Where do competitive inhibitors bind on an enzyme?

• a) Active site

• b) Allosteric site

• c) Co-factor binding site

• d) Enzyme-substrate complex

Enzymes are highly specific. What does this mean?

• a) They can catalyze any chemical reaction

• b) They can only catalyze one specific reaction

• c) They are not affected by temperature

• d) They are not affected by pH changes
  

Фотосинтезийн химийн тэгшитгэлийг аль нь зөв илэрхийлж байна вэ?

• А. С6Н12О6 = 2C2H5OH + 2CO2

• В. 6H2O + 6 CO2 = С6Н12О6 + 6О2

• С. С6Н12О6 + 6О2 = 6H2O + 6 CO2

• D. С6Н12О6 = 2C3H6O3