Which is NOT a major type of carbohydrate?

A. Monosaccharides

B. Disaccharides

C. Pentasaccharides

D. Polysaccharides

Answer Explanation:

There are four major types of carbohydrates: monosaccharides, disaccharides, oligosaccharides, and polysaccharides. Monosaccharides (mono- means one) are made up of one sugar molecule, while disaccharides (di- means two) are made up of two sugar molecules. Oligosaccharides (oligo- means few) are usually less than a dozen sugar molecules, while polysaccharides (poly-means many) are usually more than a dozen sugar molecules.

Pentasaccharides are not a type of carbohydrate.

Therefore, the Correct Answer is C.

Q #1: What is the role of ribosomes?

A. Make proteins

B. Waste removal

C. Transport

D. Storage

Answer Explanation

A ribosome is a structure of eukaryotic cells that makes proteins.
Q #2: Which of the following molecules exhibits ionic bonding?

A. NaCl

B. CO2

C. C6H12O6

D. H2O

Answer Explanation

Sodium chloride exhibits lonic bonding due to the attraction between Na+ ions and Cl- ions.

Typically, elements on the opposite sides of the periodic table (a metal and a nonmetal) form ionic bonds. Carbon dioxide, water, and glucose exhibit covalent bonding. Typically, elements on the same side of the periodic table (two or more nonmetals) form covalent bonds.
Q #3: Which of the following answers shows CH4 +2O2=CO2 +H2O as balanced?

A. CH4 + 2O2 = 2CO2 + 2H2O

B. 2CH4 + 4O2 = 2CO2 + H2O

C. 2CH4 + O2 = 2CO2 + H2O

D. CH4 + 2O2 = CO2 + 2H2O

Answer Explanation

For the formula CH4 + 2O2 = CO2 + H2O to be balanced there must be an equal number of molecules on both the reactant and product sides. In this case, for the formula to be balanced, a coefficient of a 2 needs to be placed in front of the O2 and the H2O molecules. This would make both the reactant and product sides have one carbon, four hydrogens, and four oxygens

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Which is NOT a major type of carbohydrate?

More Questions on TEAS 7 Science

Q #1: What is the role of ribosomes?

Answer Explanation

Q #2: Which of the following molecules exhibits ionic bonding?

Answer Explanation

Q #3: Which of the following answers shows CH4 +2O2=CO2 +H2O as balanced?

Answer Explanation

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