TEST QUESTIONS AND CORRECT ANSWERS
COMPLETE SOLUTION VERIFIED PASS
●● Population
Answer: All the birds called cardinals (Cardinals cardinalis) in a forest.
●● Experimental/independent variable
Answer: Brand of fertilizer used in Jennifer's tomato plant experiment.
●● Response/dependent variable
Answer: Amount of fruit produced by the tomato plants in Jennifer's
experiment.
●● Scientific method
Answer: A control group is always exposed to the factor being tested
(this statement is false).
●● Model
Answer: The mice used when researchers test a new human cancer drug.
●● Independent/experimental variable
,Answer: Whether or not the patient gets one of the antibiotics or placebo
in the antibiotic experiment.
●● Controlling confounding variables
Answer: Using many replicates in the antibiotic experiment.
●● Confounding variables
Answer: Variables that make experiments difficult to interpret.
●● Deductive reasoning
Answer: Often used in the design of an experiment.
●● Strengths of science
Answer: Scientific theories can change as new data become available,
but it is false to say that scientific theories, once found to be true, are
always true.
●● Emerging diseases
Answer: Emerging diseases enter the human population due to new
interactions with other organisms that can act as vectors of disease and
changes in technology use that expose humans to new infectious
organisms.
●● Characteristic of life - Homeostasis
, Answer: When you drink a large amount of water you have to urinate
more often.
●● Characteristic of life - Growth and Development
Answer: A caterpillar metamorphoses into a butterfly.
●● Characteristic of life - Organization
Answer: Cutting open many leaves from trees and examining them
under a microscope reveals that the tissues for photosynthesis are always
in the middle layer with a protective layer of cells surrounding the leaf.
●● Characteristic of life - Acquire Materials and Energy
Answer: Leaves take the energy from sunlight and perform
photosynthesis, storing that energy in chemical bonds on carbon atoms
taken from the air.
●● Characteristic of life - Adaptation through Evolution
Answer: Timber rattlesnakes, Crotalus horridus, are ambush hunters
found in Arkansas forests and are nearly impossible to see due to their
colors and markings.
●● Characteristic of life - Response to Stimulus
Answer: A moth sees a streetlight at night and flies toward the light.