EXAM 1 Ch. 1

Question 1

What is biology?

Answer 1

Study of life

Question 2

What is energy?

Answer 2

Capacity to do work; keeps cells functioning

Question 3

What is a nutrient?

Answer 3

necessary for survival but an organism cannot make it for itself; can come from milk, water, oxygen, coffee, sun
-CAN BE RECYCLED

Question 4

How do producers differ from consumers? Provide an example of each.

Answer 4

-Consumers have to get energy FROM producers
(humans, lions, dogs eat producer (plant) or take in some of the energy)
-Producers can make their own energy
(sunlight converts into energy (chemical energy); they also get energy directly from the sun

Question 5

Is energy recycled?

Answer 5

Yes

Question 6

Are nutrients recycled?

Answer 6

Yes

Question 7

What is homeostasis?

Answer 7

Maintaining a same/stable environment in a cell or whole organism.
Example: maintaining body temperature

Question 8

What is DNA?

Answer 8

deoxyribonucleic acid, is the molecule that contains the genetic code of organisms; is in each cell in the organism and tells cells what proteins to make.

Question 9

What are the 3 domains that classify life? Example for each domain

Answer 9

Bacteria, Archea, Eukarya; protists, plants, fungi, and animals

Question 10

What is science?

Answer 10

Study of evidence

Question 11

What are the steps of scientific method?

Answer 11

Observation
Hypothesis
Prediction
Experiment to test hypothesis
Results and conclusion

Question 12

What are the basic features that all living organisms share?

Answer 12

They acquire materials and energy, sense and respond to change, pass DNA to offspring

Question 13

What is evolution?

Answer 13

the study of life forms evolving to suit the changing environment