Ch. 4 Microscopes Flashcards Preview

Microbiology for Health Sciences > Ch. 4 Microscopes > Flashcards

Flashcards in Ch. 4 Microscopes Deck (33)
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0

What is Resolution?

Minimum distance two points can be apart and still be distinguished as separate

1

What are different kinds of Light Microscopes?

Compound, Stereo, and Laser Confocal

2

What are the different types of Electron Microscopes?

1. Scanning (surface)
2. Transmission (inside)

3

To be living you must...

1. Order
2. Evolutionary Adaptation
3. Response to the Environment
4. Regulation
5. Energy Processing
6. Growth and Development
7. Reproduction

4

Characteristics of Prokaryotic Cells?

1. DNA usually not enclosed in a membrane
2. DNA not associated with histones
3. Lack organelles
4. Cell wall usually made of peptidoglycan
5. Divide by binary fission (asexual process)

5

Characteristics of Eukaryotic Cells?

1. DNA in a nucleus and packed using histones
2. Lots of organelles
3. Cell wall chemically different when present
4. Cell division involves cytokinesis/mitosis

6

Coccus or Cocci

Round

7

Bacillus or Bacilli

Rod

8

Coccobacillus

Short/plump rod

9

Vibrio

Curved rod

10

Spirillum

Short, rigid helical rod

11

Spirochete

Long, flexible helical rod

12

What is Arrangement?

Grouping of bacterial cells

13

How is Arrangement determined?

By how cells divide and remain attached after division

14

What is Glycocalyx?

Sugar/ protein coat outside the cell wall

15

What are 2 types of Glycocalyx?

1. Slime layer-loosely organized and attached
2. Capsule-highly organized and tightly attached

16

What are the functions of Glycocalyx?

1. Protect against dehydration and nutrient loss
2. Inhibit WBC phagocytosis
-More pathogenic
3.Attachment help form biofilm

17

What is Monotrichous?

Single

18

What is Lophotrichous?

Small bunches at one end

19

What is Amphitrichous?

Flagella at both ends of cell

20

What is Peritrichous?

All over surface and slowest

21

What is Sex Pili?

Appendage used to transfer DNA

22

Cell wall of G+

1. Thick layer of PG, periplasmic space, PM
2. Teichoic and lipoteichoic acids extend through PG

23

Cell wall of G-

1. Outer membrane, space, thin layer of PG, space, inner membrane

24

Gram Stain

1. Important for classification and identification
2. Used to diagnose infection and guide drug treatment

25

Mycoplasma

Very small intracellular parasites, have sterols in CM that prevent lysis

26

Pleomorphic

Great variation in shape

27

Sporulation

Formation of endospores

28

Germination

Return to vegetative growth

29

Nucleoid

Region where DNA in cells is found