Lecture 1: Introduction- Cells and Microscopy Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What is Biology?

A

Biology is the study of life

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is an Organism?

A

An assembly of molecules functioning as a stable whole that exhibits life.
-Unicellular organisms
-Multicellular organisms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Cell theory:

A
  1. All organisms are composed of one or more cells
  2. The cell is the basic structural and functional unit of all living organisms.
  3. Cells arise only from the division of preexisting cells.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Basic Features of Cell Structure and Function

A
  • Cells carry out the essential processes of life
  • Cells have a DNA- containing central region
  • Cells contain DNA and RNA
  • Cells use energy
  • Cells occur in prokaryotic and eukaryotic forms
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Difference between Prokaryotic and Eukaryotic Cells

A

Prokaryotic cells lack a nucleus and have no membrane-bound organelles, while Eukaryotic cells do.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Magnification

A

The ratio of the object as viewed to its real size (e.g. 1200x)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Resolution

A

The minimum distance that 2 points in the specimen can be separated and still be seen as 2 points

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Light Microscopes

A

Use light to illuminate the specimen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Electron Microscope

A

Use electrons to illuminate the specimen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Light Microscopy

A
  • Bright field microscopy
  • Differential interference contrast microscopy (DIC)
  • Fluoresence microscopy
  • Confocal microscopy
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Electron Microscopy

A
  • Transmission electron microscopy (TEM)
  • Scanning electron microscopy (SEM)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly