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Flashcards in Into to Biology/Chemistry Deck (30)
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What is Science?

An attempt to describe/define our world. From the smallest particle to the largest organism.

1

List the seven steps of the scientific method.

1. Observation
2. Ask a question
3. Form a Hypothesis
4. Consult existing information
5. Design an experiment to test your hypothesis
6. Collect data
7. Draw a conclusion (accept or reject your hypothesis)

2

What are variables?

Parts of the experimental enviroment

3

What are Controlled variables?

Variables that stay the same between experiments.

4

What are Dependent variables?

Variables thats Outcome is changed by the Independent variable

5

What are Independent variables?

The variable that the scientist is manipulating

6

What are the two rules of an experiment in order for it to be considered validated data?

1. It has to be Repeatable by the experimenter (x3)
2. It has to be Reproducible by others given the same materials

7

What are the 3 Considerations of experimental design?
(When designing an experiment what are 3 good things to concider?)

1. Is it Nessesary? (What will be the Advancement?)
2. Is it Feasible? (Is this Reasonable to try?)
3. Is it Ethical? (Is it within the social convictions of the time?)

8

What are model organisms?

Organisms used in place of preferred organisms that usually are cheaper, easier & more ethical to use.

9

What are some common model organisms?

Bacteria, Drophila, Mus Musculus

10

What is Drophila?

Fruit flys

11

Are Bacteria Procaryotes or Eucaryotes?

Procaryotes

12

What is Mus Musculus?

A common house mouse

13

What are Procaryotes?

Single celled organisms

14

What are Eucaryotes?

Multicellular Mammals

15

What are the benefits of Bacteria?

They reproduce rapidly (x1/hr)
Small, cheap, easy to use.
don't require much room to grow
we understand their genetics

16

What are the disadvantages of bacteria?

Not directly comparable to Eucaryotes.

17

What does Bacteria require to survive?

37*C & a nutrient broth

18

What do Drophila require to survive?

Constant controlled temperature & nutrient broth

19

What are the benefits of using Drophila?

quick reproduction rate, sexually reproduce, small, cheap, we understand their genetics.

20

What are the disadvantages of Drophila?

small, mobil easy to lose, limited applications to humans

21

What are the benefits of Mus Musculus?

Quick production rate, smallish, dont require a ton of care, we understand their genetics.

22

What are the disadvantages of Mus Muculus?

Ethics, can be a bit more costly, have to take care of them

23

What makes up a Nuculus?

Proton + Neutron

24

What is an Orbital?

Circular orbit view of electrons (representative model) (section)

25

What is an electron cloud?

It shows the behavior of electrons. Full 3D model

26

How many Electrons can the first orbital hold?

A maximum of 2 Electrons

27

How many Electrons can the Subsequent orbital hold?

A maximum of 8.

28

What are Ionic Bonds?

Somewhat strong, not too stabile.
Positively charged atoms are attached to negatively charged atoms.
They go together simply because opposites attract.
Subsequent, superficial no not last very long

29

Hydrogen Bonds?

Weakest bonds. Short lived. They make up for this w/ #'s & strength.
Blending of Covenant & Ionic Bonds