Chapter 1 : Exploring Life (part 2) Flashcards Preview

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Flashcards in Chapter 1 : Exploring Life (part 2) Deck (24):
1

What level are cells on?

The level at which the properties of life emerge

2

The basic types of cells

Prokaryotes
Eukaryotes

3

Prokaryotic cells

type of cell that lack a membrane enclosed organelles, including the nucleus, and found in the domains Bacteria and Archaea

4

Eukaryotic cells

Type of cells that lack membrane enclosed organelles, includes organelles and a true nucleus that contains DNA

5

Systems biology

Area of biology aimed at constructing models the complex dynamic behavior and interactions of entire biological systems

6

Scientific inquiry

Used to ask and answer questions about nature

7

The 2 main scientific approaches

Discovery science
Hypothesis Based Science

8

Discovery Science

The process of describing nature without any preconceived expectations

9

Discovery science is based on

The practices of observation and inductive reasoning

10

Observation

Consists of receiving knowledge of the world through our senses, or recording information using scientific tools and instruments

11

The types of data

Quantitative
Qualitative

12

Quantitative

Numerical measurements
(blood pressure increased under pressure)

13

Qualitative

A description of characteristics or occurrences
(face flushed with increased blood pressure)

14

Observation leads to

Inductive reasoning

15

Inductive Reasoning

To draw general conclusions from many observations

16

Hypothesis Based Science

Is based on the scientific method of inquiry

17

Hypothesis

A tentative explanation a scientist proposes for a specific phenomenon that has been observed

18

Deductive reasoning

Using logic to come up with ways to test a hypothesis based on predictions and expectations

19

Experiment

A test under controlled conditions that is made to demonstrate a known truth, to examine the validity of a hypothesis, or to determine the efficacy of something previously untried

20

Independent variable

The variable that is varied or manipulated by the researcher

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Dependent variable

The response that is measured

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Control group

Set of subjects that does not receive any manipulation during experiment

23

Scientific Theory

Broader in scope than a hypothesis
Usually general enough to generate many new, specific hypotheses
Supported by a large and usually growing body of evidence

24

Scientific Law

A statement based on repeated experimental observations that describes some aspect of the universe which always applies under the same
Factual and well-confirmed statements