Part 2 bio review

Which of the following organic molecules is a major storage carbohydrate used to store energy in plants?

• Cellulose

• Maltose

• 1. Glycogen

• 1. Starch

The diagram shows part of a protein molecule.

What does X represent?

• amino acid

• 1. fatty acid

• 1. glycerol

• sugar

The diagram shows a section of DNA, with four bases identified on one strand. Which sequence of bases would be on the other strand, starting from the top?

• AGTC

• CTGA

• GACT

• TCAG

All of the following organic compounds are polymers EXCEPT

• starch

• cellulose

• polypeptide

• water

The diagram represents a protein molecule

What do the small circles represent?

• amino acids

• fatty acids

• glycerol

• simple sugars

which simple molecules are the basic units of protein?

• amino acids

• fatty acids

• sugars

• vitamins

All of the following contribute to the unique properties of water EXCEPT

• cohesion

• adhesion

• polarity

• low heat capacity

Which of the following is true about enzymes?

I. They speed up the rate of a reaction.

II. They are used up in the reaction.

III. They are usually proteins.

• I only

• II only

• III only

• I and III only

Ionic bonds are formed between which of the following:

• Atoms sharing electrons

• Ions of opposite charge

• A partially positive hydrogen and a partially negative atom

• Two anions

All of the following are characteristics of water EXCEPT

• 1. It is a polar molecule

• 1. It is an excellent solvent

• It has a high heat capacity

• It interacts well with nonpolar molecules