EBIO 1210- Homework 3 (Carbohydrates)

Glycogen is _____. A polysaccharide found in animals A source of saturated fat A polysaccharide found in plant cell walls A transport protein that carries oxygen the form in which plants store sugars

A polysaccharide found in animals

Select the statement that is incorrect. Complex sugars are carbohydrates. All carbohydrates have the general formula Cn(H2O)n. Simple sugars are carbohydrates. Simple sugars contain only carbon, oxygen, and hydrogen atoms.

All carbohydrates have the general formula Cn(H2O)n. This formula only applies to simple sugars, which are equal parts carbon and water. Complex sugars, which do not have this general formula, are also carbohydrates.

What class of biological molecules consists of both small and macromolecular polymers?

Carbohydrates

On food packages, to what does the term insoluble fiber refer to?

Cellulose

Plant cell walls consist mainly of:

Cellulose

Which of the following complex carbohydrates is listed with its correct function? Chitin: constituent of bacterial cell walls Amylose: main component of plant starch Starch: primary energy-storage molecule in animals Cellulose: structural component of plant cell walls

Cellulose

Which of these is a polysaccharide? lactose cellulose galactose glucose sucrose

Cellulose

_____ is the most abundant organic compound on Earth. Starch Cellulose Glycogen Lactose Glucose

Cellulose Cellulose, a component of plant cell walls, is the most abundant organic compound found on earth.

Since lactose can be split into two separate monomers during dehydration synthesis, lactose can be classified as a _________________.

Dissacharide

What is the primary source of lactose in animals?

Milk (cows)

A molecule with the chemical formula C6H12O6 is probably a _____________.

Monosaccharide

Which of the following statements about monosaccharide structure is true? Monosaccharides can be classified according to the spatial arrangement of their atoms. All monosaccharides contain carbon, hydrogen, oxygen, and nitrogen atoms. A six-carbon sugar is called a pentose.

Monosaccharides can be classified according to their spatial arrangement of their atoms

True of false? Peptidoglycan is a polysaccharide found only in bacteria.

True

A simple sugar is composed of equal parts carbon and water, which gave rise to the general name of any sugar as a _________.

carbohydrate

Lactose, the sugar in milk, is a ______________, because it can be split into two monosaccharides

disaccharide

glucose + glucose —> _____ by _____. starch + water ... dehydration synthesis cellulose + water ... hydrolysis maltose + water ... dehydration synthesis sucrose + water ... dehydration synthesis lactose + water ... hydrolysis

maltose + water ... dehydration synthesis Maltose is the disaccharide formed when two glucose molecules are linked by dehydration synthesis.

A ___________ cannot by hydrolyzed any further

monosaccharide

A carbohydrate that yields many monosaccharides when hydrolyzed is a _______________.

polysaccharide