Unit 1 Homework Key.

Question 1

all living things have structures with specific functions. Which characteristic of life best describes this?

Answer 1

Displays orginization

Question 2

all living things will increase in mass and develop parts with different specific abilities. which characteristic of life best describes this?

Answer 2

maintains homeostasis

Question 3

all living things increase in mass and develop parts with different specific abilities. which characteristic of life best describes this?

Answer 3

grows and develops

Question 4

all living things utilize or consume something as a fuel in order to survive. Which characterisitic of life best describes this?

Answer 4

requires energy

Question 5

the cells of living things are made up of molecules that always contain which element

Answer 5

carbon

Question 6

all living things are made up of the same basic building block of life. which characteristic of life best describes this?

Answer 6

made up of one or more cells

Question 7

all living things inherit adaptations that help them to survive. which characteristic of life best describes this?

Answer 7

evolves

Question 8

all living things have reactions to internal and external conditions that help them to survive. which characteristic of life best describes this?

Answer 8

responds to stimuli

Question 9

all living things produce offspring to pass along traits from one generation to the next. which characteristic of life best describes this?

Answer 9

reproduction

Question 10

which of the following is an example of direct measurement?
density
volume
length
area
all of the above

Answer 10

length

Question 11

which SI based unit would be used to describe a physical characteristic of a dolphin?

Answer 11

kilogram

Question 12

The SI system is based on powers of

Answer 12

10

Question 13

which describes this statement: "the frog is 4cm long"
quantitative data
inference
control group
qualitative data
theory

Answer 13

quantitative data

Question 14

if you are using meters, you are measuring an object’s

Answer 14

length

Question 15

if you are using seconds you are measuring

Answer 15

time

Question 16

if you are using grams you are measuring

Answer 16

mass

Question 17

in the SI system, you would measure temperature in which unit

Answer 17

celsius

Question 18

the group of test subjects that does not receive treatment is the

Answer 18

control group

Question 19

a direct method of gathering information in an orderly way is a

Answer 19

observation

Question 20

a procedure for testing a hypothesis is a

Answer 20

experiment

Question 21

a testable explanation of a situation is a

Answer 21

hypothesis

Question 22

any factor that can change in an experiment is a

Answer 22

scientific method

Question 23

the group of test subjects that does not receive treatment is the

Answer 23

control group

Question 24

a direct method of gathering information in an orderly way is a

Answer 24

observation

Question 25

a procedure for testing a hypothesis is a

Answer 25

experiment

Question 26

a testable explanation of a situation is a

Answer 26

hypothesis

Question 27

any factor that can change in an experiment is a

Answer 27

variable

Question 28

a summary of the data from your experiment that explains what you found is a

Answer 28

conclusion

Question 29

this should be done prior to developing your hypothesis

Answer 29

research

Question 30

the group of test subjects exposed to the factor being tested is

Answer 30

experimental group

Question 31

information gained from observations during an experiment (can be presented in graphs) is a

Answer 31

data

Question 32

the number of subjects tested in each group in an experiment is the

Answer 32

sample size

Question 33

a unifying explanation of observed phenomenon supported by numerous experiments

Answer 33

theory

Question 34

the variable that is measured at the end of the experiment is the

Answer 34

dependent variable

Question 35

the variable that remains the same in all groups in the experiment is the

Answer 35

constant variable

Question 36

the variable that the researcher changes and applies to the groups in the experiment is the

Answer 36

independent variable