Biology Basics Review

All of the following are examples of quantitative observations EXCEPT:

• The plant is 25 cm tall

• The liquid weighs 50 g

• The solution is blue

• The pencil is 8.5 cm long

Which statement is an inference rather than an observation?

• The ground is wet.

• It rained earlier today.

• The thermometer reads 20°C.

• The paper smells like smoke.

A testable prediction written as 'If IV, then DV' is known as a:

• Law

• Hypothesis

• Theory

• Principle

Tags

NGSS.MS-PS2-2

A student is testing the effect of fertilizer on plant growth. The independent variable is:

• Amount of fertilizer

• Height of the plants

• Amount of water each plant gets

• The same type of plant used

Tags

NGSS.MS-LS2-1

Which group in an experiment is used for comparison to the tested variable?

• Constant group

• Control group

• Independent group

• Experimental group

A measurement is precise but not accurate when:

• Data points are close together but not close to the true value

• Data points are scattered widely but average close to the true value

• Measurements are exactly correct

• The result is both correct and consistent

Which of the following must be considered when designing a technological solution?

• Cost

• Time

• Material availability

• All of the above

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

Which of the following is the smallest unit of matter that still has the properties of an element?

• Atom

• Molecule

• Cell

• Proton

Tags

NGSS.MS-PS1-1

Which six elements are most important for life?

• C, H, O, N, P, S

• Na, K, Ca, Mg, Fe, Cl

• H, O, He, Ne, Ar, Kr

• C, O, F, K, Ca, Na

Water molecules stick together because of:

• Adhesion

• Cohesion

• High specific heat

• Capillary action