Multiple choice

1.All of the following organelles are used for movement in unicellular organisms except __________

a. cilia

b. muscles

c. pseudopodia

d. flagella

2.An experiment that tests the effect of a single variable is called a _______

a. theoretical experiment

b. controlled experiment

c. variable experiment.

d. hypothetical experiment

3.Carbon can bond with one or more carbon atoms, producing a variety of ______

a. hydrocarbons

b. amino groups

c. carbon skeletons

d. inorganic molecules

4.If you wanted to find archaea, where would you look? Choose the best answer

a. Inside your intestines

b. On the forest floor

c. In trenches at the bottom of the ocean

d. On the leaves of plants