exam

Question 1

what are the 5 steps in the scientific method

Answer 1

1make an observation 
2develop a hypothesis 
3test hypothesis with experiments and collect data
4analyze data and determine results 
5make conclusions and communicate

Question 2

what is a scientific law

Answer 2

a set of facts that allow observers to predict the behaviour of objects in certain circumstances
unlikely to be disproven

Question 3

what is a hypothesis

Answer 3

possible conclusion about an event in nature, proposed solution to a scientific problem

Question 4

what are the characteristics of all living organisms

Answer 4

• made of cells
• take in nutrients/use energy
• respiration
• produce waste
• grow or change overtime
• respond to stimuli
• reproduce

Question 5

what is molecule that is found in all living organisms that allow them to allow genetic info

Answer 5

dna

Question 6

what are the main two types of cells

Answer 6

prokaryotic and eukaryotic

Question 7

describe characteristics of prokaryotic

Answer 7

-have no membrane bound organelles
-unicellular
-dna in nucleotide
-smaller
ex bacteria

Question 8

describe characteristics of eukaryotic

Answer 8

-have membrane bound organelles
-can be unicellular or multicellular
-larger
ex people plants animals

Question 9

what is convergent evolution

Answer 9

when two species experience the same type of selection pressures in their environment and result in having similar characteristics
ex sharks and dolphins

Question 10

what is divergent

Answer 10

a species with a common ancestor experiences different selection pressures in the same environments
ex dogs and wolves