Chapter 1: The Science of Life

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1

Biology

The study of life

2

Organism

any living thing

3

Homeostasis

the maintenance of a stable level of internal conditions even though environmental conditions are constantly changing
*organisms have regulatory systems that maintain internal conditions, such as temperature, water content, and uptake of nutrients by the cell*

4

Control

the standard to which the outcome of a test is compared

5

Control Group

provides a normal standard against which the biologist can compare results of the experimental group

6

Hypothesis

a proposed explanation for the way a particular aspect of the natural world functions

7

Variables

factors that are measured or controlled in a scientific study

8

Conclusion

a summary of the results of the experiment and a statement of how the results relate to the hypothesis

9

Compound Light Microscope

a microscope that shines light through a specimen and has 2 lenses to magnify an image

10

Parts of Compound Light Microscope

1) Eyepiece aka Ocular lens
2) Objective lens
3) Stage
4) Light

11

Resolution

the power to show details clearly in an image

12

Magnification

the increase of an object's apparent size

13

Unicellular

organisms made up of 1 cell
ex: bacteria

14

Multicellular

organisms that are made up of multiple cells
ex: humans, trees

15

Differentiation

the structural and functional specialization of cells during an organisms development

16

Specialization

the evolutionary adaptation of a cell, organ, organism, or population for a particular function or environment