Enzymes and digestion Flashcards
(20 cards)
What are enzymes?
Enzymes are biological catalysts that speed up chemical reactions in the body.
True or False: Enzymes are consumed in the reactions they catalyze.
False
What is the primary function of digestive enzymes?
To break down food into smaller molecules for absorption.
Fill in the blank: The enzyme __________ breaks down proteins into amino acids.
protease
Which enzyme is responsible for breaking down carbohydrates?
Amylase
What is the optimal pH range for pepsin, a digestive enzyme?
pH 1.5 to 2
Multiple Choice: Which of the following is NOT a digestive enzyme? A) Lipase B) Amylase C) Hemoglobin
C) Hemoglobin
What is the role of bile in digestion?
Bile emulsifies fats, aiding in their digestion by lipases.
True or False: Enzymes can work at any temperature.
False
What are the two main types of digestive enzymes?
Endopeptidases and exopeptidases
Fill in the blank: __________ is the enzyme that digests fats.
Lipase
What is the substrate for amylase?
Starch
Multiple Choice: Which organ produces bile? A) Stomach B) Pancreas C) Liver
C) Liver
What happens to enzymes at high temperatures?
They denature and lose their catalytic activity.
True or False: All enzymes are proteins.
True
What is the function of the enzyme lactase?
To break down lactose into glucose and galactose.
Fill in the blank: The enzyme __________ helps in the digestion of nucleic acids.
nuclease
What is the difference between an endopeptidase and an exopeptidase?
Endopeptidases cleave peptide bonds within the protein chain, while exopeptidases cleave from the ends.
Multiple Choice: In which part of the digestive system is pepsin active? A) Mouth B) Stomach C) Small intestine
B) Stomach
What is the role of coenzymes in enzyme activity?
Coenzymes assist enzymes in catalyzing reactions.
