Bio 1st Semester Final Practice

Which two steps are missing from the 7 steps of the scientific methods? Check all that apply.

• Forming a hypothesis

• Drawing conclusions

• Copying someone else's results

• Collecting supplies

• Drawing pictures

The variable in an experiment that is changed.

• independent variable

• dependent variable

• constant

• control

Based on your observations, you suggest that the presence of water could accelerate the growth of bread mold. This is

• hypothesis

• theory

• analysis

• conclusion

The process by which organisms keep everything inside their bodies within certain limits is called

• homeostasis

• evolution

• metabolism

• photosynthesis

__________ is a combination of chemical reactions through which an organism builds up or breaks down materials.

• metabolism

• homeostasis

• bias

• stimulus

What are the subatomic particles found in an atom?

• protons, electrons, neutrons

• molecules, electrons and neutrons

• protons and electrons

• protons and neutrons

What element is shown, how many protons, neutrons, and electrons does it have?

• Carbon - 6 protons, 6 neutrons, 6 electrons

• Oxygen - 6 protons, 6 neutrons, 6 electrons

• Carbon - 3 protons, 3 neutrons, 6 electrons

• Carbon - 8 protons, 8 neutrons, 6 electrons

A bond formed between a metal and a nonmetal is a __________ bond.

• ionic

• covalent

• metallic

• none of the above

What do A and B represent in a chemical equation.

• A - reactant B - product

• A - product B - reactant

• A - hydrogen and oxygen B - water

On the pH scale acids range from _____ to _____.

• 0 to 6

• 8 to 14

• 7

• 4 to 8