ANIMAL PHYSIOLOGY
DIGESTION IN DIFFERENT ANIMALS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
a protein produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction
|
|
|
A muscular tube that connects the mouth to the stomach
|
|
|
flap of tissue that covers the trachea when swallowing food
|
Detailed explanation-1: -An enzyme is a substance that acts as a catalyst in living organisms, regulating the rate at which chemical reactions proceed without itself being altered in the process. The biological processes that occur within all living organisms are chemical reactions, and most are regulated by enzymes.
Detailed explanation-2: -Enzymes are proteins that act as catalysts.
Detailed explanation-3: -The reactions are: Oxidation and reduction. Enzymes that carry out these reactions are called oxidoreductases. For example, alcohol dehydrogenase converts primary alcohols to aldehydes.
Detailed explanation-4: -A substance that speeds up a chemical reaction-without being a reactant-is called a catalyst. The catalysts for biochemical reactions that happen in living organisms are called enzymes. Enzymes are usually proteins, though some ribonucleic acid (RNA) molecules act as enzymes too.
Detailed explanation-5: -Biological catalysts are called enzymes.