What Is the Result,expressed to the Proper Number of Significant

question 55

Multiple Choice

What is the result,expressed to the proper number of significant figures,of adding 23.4 to 91.237 and then subtracting 23.4?

• A)91.237
• B)91.2
• C)91.3
• D)91.0
• E)91

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Definitions:

Intrinsic Factor

A substance secreted by parietal cells in the lining of the stomach. It is necessary for vitamin B12 absorption.

Sucrase

An enzyme that digests sugars.

Maltase

An enzyme that breaks down maltose into glucose during digestion.

Lactase

Lactase is an enzyme found in the small intestine that is responsible for the digestion of lactose, the sugar found in milk.