Question

1) What is the difference between maltose and amylose (starch)? Select one: a. Maltose is joined...

1) What is the difference between maltose and amylose (starch)?
Select one:
a. Maltose is joined by 1-4 glycosidic linkages, while amylose is joined by 1-6 glycosidic linkages.
b. Maltose is made of glucose in the alpha form, while amylose is made of glucose in the beta form.
c. Maltose is composed of glucose monomers, while amylose is composed of fructose monomers.
d. Maltose is a disaccharide, while amylose is a polysaccharide.
2) What does the “1-4” in “1-4 glycosidic linkage” mean?
Select one:
a. Each branch of the chain is followed by four monosaccharides.
b. A one-carbon monosaccharide is connected to a four-carbon monosaccharide.
c. The first carbon on one monosaccharide is connected to the fourth carbon on the next monosaccharide.
d. Each monosaccharide is connected to four other monosaccharides.

3)

What is the difference between the sugar group in DNA and the sugar group in RNA?

Select one:

a. The sugar group in DNA is a hexose, while the sugar group in RNA is a pentose.

b. The sugar group in DNA has one less hydroxyl group (–OH) than the sugar group in RNA.

c. The sugar group in DNA is a purine, while the sugar group in RNA is a pyrimidine.

d. The sugar group in DNA contains one less carbonyl group (double-bonded oxygen atom) than the sugar group in RNA.

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Homework Answers

Answer #1

1). d. Maltose is a disaccharide, while amylose is a polysaccharide.

Explanation:

Both amylose (1-4 glycosidic bond) and maltose (1-4 glycosidic bond) made of alpha glucose subunits. Amylose is a polysaccharide made of α-D-glucose units, bonded to each other through α(1→4) glycosidic bonds whereas maltose is disaccharide.

2). c. The first carbon on one monosaccharide is connected to the fourth carbon on the next monosaccharide.

3). b. The sugar group in DNA has one less hydroxyl group (–OH) than the sugar group in RNA.

Explanation:

Ribose is the sugar in both DNA & RNA. But the ribose in the DNA is called as deoxyribose sugar. Due to lacks a hydroxyl (-OH) group at the 2' carbon, the ribose in DNA is called deoxyribose sugar.

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