w1 1-10

Question 1

hypothesis

Answer 1

the proposed scientific explanation for a set of observations

Question 2

theory

Answer 2

ideas that have been supported over time

Question 3

dependent variable

Answer 3

observed factor that may change in response to the other variable

Question 4

independent

Answer 4

the factor that is purposely changed in an experiment

Question 5

control group

Answer 5

a group of subjects, closely resembling the experimental group but not receiving the factor under study, which serves as a comparison to the experimental group.

Question 6

experimental group

Answer 6

a group of subjects which receive the factor under study

Question 7

cell

Answer 7

the smallest unit of an organism that can be considered to be alive

Question 8

stimulus

Answer 8

any physical or chemical input that is sensed

Question 9

homeostasis

Answer 9

the process by which organisms keep their internal body conditions fairly constant to survive

Question 10

evolution

Answer 10

a change in a kind of organism over time