Lab Quiz 1

Question 1

What is DNA

Answer 1

Deoxyribonucleic Acid

Question 2

What is the procedure to the DNA lab

Answer 2

1) Freeze the rubbing alcohol
2) make the extraction liquid
3) put strawberries in a plastic bag, squeezing out all the air
4) mash the strawberries
5) Add the extraction liquid to the strawberries
6) mash the mixture together for a minute
7) place a layer of cheesecloth inside the funnel and set the funnel on top of the beaker
8) pour the strawberry mixture from the bag into the funnel
9) throw away cheesecloth
10) pour the contents of the glass into the test tube until 1/4 full
11) tilt the test tube and pour rubbing alcohol down the side. Do not mix alcohol with the strawberry juice.
12) Let it sit for a few minutes. A whitish material should appear, that is DNA

Question 3

How is extraction liquid made

Answer 3

Salt, water and detergent

Question 4

detergent purpose

Answer 4

detergent is both hydrophilic and hydrophobic, used as a separator in the experiment

Question 5

what does alcohol do

Answer 5

it precipitates the DNA

Question 6

What are the steps of the scientific method

Answer 6

1) make an observation
2) ask a question
3) make a research hypotheses
4) state the null hypotheses
5) make predictions
6) test hypotheses
7) repeat

Question 7

What is the importance of the scientific method

Answer 7

to make observations, approach problems and generate possible answers to questions

Question 8

What is a hypothesis

Answer 8

A proposed explanation for an observation

Question 9

What is a null hypothesis

Answer 9

A theory based on insufficient evidence that requires further testing

Question 10

What is an independent variable

Answer 10

the variable that is changed

Question 11

what is the dependent variable

Answer 11

a variable that is tested and measured

Question 12

explain earth worm experiment

Answer 12

draw a circle, put the worm in the center, observe what it does, after a while draw a new circle but have a break in it and observe what the worm does again.

Question 13

what is the classification skyme order

Answer 13

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 14

What is a Daphnia

Answer 14

Water Flea

Question 15

What is Kinesis

Answer 15

A change in movement speed or pattern induced by the presence of a stimulus

Question 16

what is fixed action patterns

Answer 16

A complex series of stereotyped behaviors that is encoded genetically within an organism

Question 17

What is learned behaviors

Answer 17

they are generally modified according to an animals experience

Question 18

Sow bugs are what

Answer 18

crustation lisopods, meanings legs are similar

Question 19

Where did cockroaches come from

Answer 19

Madagascar

Question 20

What are the five hardy Wineburg theory

Answer 20

1) the population is very large and well mixed
2) there is no migration
3)there are no mutations
4) mating is random
5) there is no natural selection

Question 21

What are the equations

Answer 21

1) p+q=1.0 and p^2+ 2pq+p^2=1.0

Question 22

What are the key concepts (in-depth film guide)

Answer 22

1) a mutation is a random change to an organisms’s DNA sequence
2) the environment contributes to determining whether a mutation is advantageous, deleterious, or neutral.
3) Mutations that increase the fitness of an organism increase in frequency in a population.
4) evolution can happen quickly
5) different mutations in the same gene, or even mutations in different genes, can result in the same phenotype
6) while mutations can be random, natural selection is not random
7) selective pressure depends on the environment in which an organism lives.

Question 23

How do the pocket mice survive in the desert

Answer 23

their fur color adapts to the color of the enviroment they live in