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Chapter 16: Problem 29

What is the reactant for each of the following enzymes? a. sucrase b. lipase c. rennin

Short Answer

Expert verified
a. Sucrose b. Triglycerides c. Casein.

Step by step solution

01

Identify the Function of Sucrase

Sucrase is an enzyme that catalyzes the hydrolysis of sucrose (table sugar) into glucose and fructose. Therefore, the reactant for sucrase is sucrose.
02

Identify the Function of Lipase

Lipase is an enzyme that catalyzes the breakdown of lipids (fats) into glycerol and fatty acids. The reactant for lipase is generally triglycerides (a type of fat).
03

Identify the Function of Rennin

Rennin, also known as chymosin, is an enzyme that coagulates milk, turning it from liquid into a semi-solid state. The main reactant for rennin is casein, a protein found in milk.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Understanding Sucrase
Sucrase is a key enzyme in our digestive system. Its primary function is to facilitate the breakdown of sucrose, commonly known as table sugar. When sucrase acts on sucrose, it splits it into two simpler sugars: glucose and fructose. This reaction is essential because our bodies can easily absorb and use glucose and fructose for energy. The process sucrase helps with is called hydrolysis鈥攁 reaction involving the splitting of a compound using water.
In summary, the reactant that sucrase acts upon is sucrose. It's vital for efficiently converting the sugars we consume into usable forms.
The Role of Lipase
Lipase is an enzyme with a crucial role in the digestion of fats. This enzyme catalyzes the breakdown of lipids, typically triglycerides, into glycerol and fatty acids. Triglycerides are the primary form of fat storage in our bodies and are also abundant in our diet.
When lipase acts on triglycerides, it releases glycerol and fatty acids, which can then be absorbed by the body and used for energy or other biological processes.
To summarize, triglycerides serve as the primary reactants for lipase, helping to make fats digestible and available for our body's needs.
Introduction to Rennin
Rennin, often referred to as chymosin, plays a special role in the digestion of milk, especially in young mammals. This enzyme is responsible for coagulating milk, turning it from a liquid state into a semi-solid form.
The main target of rennin in milk is a protein called casein. By coagulating milk, rennin makes it easier for the body to digest and absorb the nutrients present in milk.
In essence, casein is the reactant rennin acts upon, making it vital for milk digestion. Whether you're studying enzymes or looking to better understand digestion, remembering rennin's role in coagulating milk helps illuminate how our bodies efficiently process food.

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Most popular questions from this chapter

Trypsin, a peptidase that hydrolyzes polypeptides, functions in the small intestine at an optimum \(\mathrm{pH}\) of 7.7 to \(8.0 .\) How is the rate of a trypsin-catalyzed reaction affected by each of the following conditions? a. changing the \(\mathrm{pH}\) to 3.0 b. running the reaction at \(75^{\circ} \mathrm{C}\)

Match the terms (1) active site, (2) lock-and-key model, and (3) induced-fit model with each of the following: a. the portion of an enzyme where catalytic activity occurs b. an active site that adapts to the shape of a substrate c. an active site that has a rigid shape

Name the substrate for each of the following enzymes: a. peptidase b. cellulase c. lactase

Indicate whether each of the following describes a competitive or a noncompetitive enzyme inhibitor: a. The inhibitor has a structure similar to the substrate. b. The effect of the inhibitor cannot be reversed by adding more substrate. c. The inhibitor competes with the substrate for the active site. d. The structure of the inhibitor is not similar to the substrate. e. The addition of more substrate reverses the inhibition.

What functional groups are found in all \(\alpha\) -amino acids?
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