Unit 1 Vocabulary Review

A _________ in science is based on multiple, well tested and confirmed hypotheses.

• experiments

• conclusions

• Scientific Law

• theory

After a scientist makes a(n) ________, he then forms a hypothesis and makes predictions.

• experiment

• theory

• observation

• conclusion

A hypothesis that is NOT supported by data is ________.

• science

• non-science

• accepted

• developed

The variable that is manipulated or changed in an experiment.

• Independent

• Dependent

• Controlled

• Data

The smallest particle of matter that can retain the properties of an element.

• solution

• compound

• molecule

• atom

Water is 'sticky', each molecule is attracted to other water molecules because of its polarity; this gives water unique qualities. This attraction is called...

• density

• adhesion

• cohesion

• specific heat

_______ have a pH below 7, denature enzymes and affect homeostasis.

• bases

• acids

• solutes

• catalysts

Macromolecules that are useful for energy are:

• carbohydrates and lipids

• lipids

  and protein

• carbohydrates and protein

• carbohydrates and nucleic acids

The energy needed to start a reaction is ________. Our bodies lower the amount of energy by using a(n) ________.

• activation energy

  enzyme

• potential energy

  catalyst

• typical energy

  lipid

• kinetic energy

  carbohydrate

What type of macromolecule does this represent?

• nucleic acid

• lipid

• carbohydrate

• protein