Biology Unit 1 Review

When leaving a movie theater, a person notices that the sidewalk is now wet. If the person assumes it rained during the movie, the person is making

• a hypothesis

• an inference

• an observation

• a prediction

In performing any laboratory experiment, what is the first step performed out of the following choices?

• collect data from the experiment

• analyze data

• publish results

• form hypothesis

When designing an experiment, scientists will test a relationship between a "cause" and an "effect". The "effect", also represented by what the scientist measures and records, is known as the

• dependent variable

• constant

• independent variable

• control group

In a hypothesis the ___________ variable is what is being tested, while the ___________ variable is the one being measured in response.

• control; dependent

• independent; control

• dependent; independent

• independent; dependent

When writing a conclusion, what should you always refer back to?

• procedure

• hypothesis

• your textbook

• the materials list

The four main types of macromolecules found in organisms are carbohydrates, lipids, nucleic acids, and

• starches

• fatty acids

• monosaccharides

• proteins

Which category of carbon-based molecules includes sugars and starches?

• unsaturated fatty acids

• phospholipids

• proteins

• carbohydrates

If available, the body will always digest which macromolecule for energy first?

• lipids

• carbohydrates

• enzymes

• proteins

The class of macromolecules that would most likely be involved in contracting muscles would be

• lipids

• proteins

• enzymes

• carbohydrates

Animals store most of their excess energy reserves as _______ because

• glucose; it is easy to break down.

• fat; they store twice as much energy per gram.

• protein; it is a compact source of energy in their bodies.

• carbohydrates; they store twice as much energy per gram of glucose.