Let's Review Biology

A hypothesis is useful if it can be

• tested
• proven correct
• proven incorrect
• tested in a lab only

Which word means "maintaining balance" in an organism?

• metabolism
• homeostasis
• evolution
• specialization

The variable that is manipulated in an experiment is the

• independent variable
• dependent variable
• constant variable
• scientific variable

In constructing a graph showing the weight of rabbits eating lettuce only for a week in the lab, what type of graph would you use?

• scatter plot
• histogram
• line graph
• bar graph

A possible explanation of an observation of an event is a(n)

• variable
• theory
• conclusion
• hypthesis

Hutton and Lyell's work was important to Darwin because they suggested

• the Earth is several million years old
• Earth is several thousand years old
• Earth has not changed since it was formed
• all rocks contain valuable fossils

Which scientist suggested that acquired traits could be passed onto their offspring?

• Darwin

• Malthus

• Wallace

• Lamarck

Which of the following is not found in the nucleus?

• DNA
• RNA nucleotides
• cytoplasm
• nucleolus

The building blocks of proteins are 

• carbohydrates
• lipids
• nucleotides
• amino acids

Which of the following is not necessary for photosynthesis?

• oxygen
• light
• water
• carbon dioxide