Unit 1 Biology Basics

Question 1

Life can exist under frozen surfaces in polar seas because…

Accepted Answer

water is less dense as a solid.

Question 2

What must be considered when designing a solution for a problem with technology?

Accepted Answer

All the above

Question 3

The macromolecules that make up the majority of the cell membrane’s structure are

Accepted Answer

lipids

Question 4

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

Accepted Answer

carbohydrates

Question 5

In a hypothesis the ___ variable is what is being tested, while the__ variable is the one being measured

Accepted Answer

independent; dependent

Question 6

Which of the measurements below is the most accurate?

Accepted Answer

Beaker – 48 mL

Question 7

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

Accepted Answer

proteins

Question 8

When placed in water, oil does not dissolve and stays separate. This means oil is __ and __

Accepted Answer

hydrophobic and nonpolar

Question 9

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

Accepted Answer

carbohydrates

Question 10

When designing an experiment, scientists will test a relationship between a “cause” and an “effect.” The “effect,” also

Accepted Answer

dependent variable

Question 11

What piece of equipment would NOT be used to transfer liquid?

Accepted Answer

petri dish

Question 12

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

Accepted Answer

inference

Question 13

Micah needs 25 mL of motor oil to test his combustion engine. Which tool would give him the most precise measurement?

Accepted Answer

graduated cylinder

Question 14

Which of the following terms represents the smallest part of an element that still has the properties of that element?

Accepted Answer

atom

Question 15

Animals store most of their excess energy reserves as _______ because…

Accepted Answer

fat; they store twice as much energy per gram.

Question 16

Which of the measurements below is the most precise?

Accepted Answer

Graduated cylinder - 80.6 mL

Questions 16