Bio SOL Rvw Wk 2 Lsn 1

Bio SOL Rvw Wk 2 Lsn 1

Multiple Choice

After 24 hours, the amount of gas that accumulated at the top of the inverted test tube is measured. The students conclude that the light source is causing water vapor to fill the top of the tube. The best alternative explanation of the differences between the setup is that the ___

• gravity increased the downward flow of the trapped water

• heat from the light source caused the escape of dissolved gas

• metabolism of the elodea plants absorbed CO2 from the water

• light caused the elodea plants to photosynthesize, releasing oxygen gas

Multiple Choice

Proteins are among the most diverse group of macromolecules because of the ___

• different amino acids that can be connected in many sequences

• different types of bonds linking amino acids together

• energy phosphate groups that amino acids contain

• link between each DNA base and an amino acid in a protein

Multiple Choice

The arrow in the diagram represents the movement of which molecular structure?

• mRNA molecule

• base pair

• protein

• DNA molecule