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Biology > Monera > Flashcards

Flashcards in Monera Deck (21):
1

Monera

Bacteria/ Prokaryotae
-no membrane enclosed nucleus or organelles
-unicellular and small

2

Flagella

what make bacteria motile

3

Capsule

semi-solid slime layer used as protection for bacteria

4

Plasmid

loops of dna containing information on bacterial resistance to antibiotics. Also may have some bacterial genes.

5

Vibrio

spiral bacteria shaped like comma. Cholera

6

Binary fission

asexual reproduction that bacteria undergo

7

Endospore

tough-wall formed around new loop of dna during binary fission that protects the dna during unfavourable conditions

8

Photosyntetic bacteria

autotrophic
-get energy from light to produce food.
eg. purple sulfur bacteria

9

Chemosynthetic bacteria

autotrophic
-get energy from chemical reactions to produce food.
eg. nitrifying bacteria in soil

10

Saprophytic bacteria

decomposers that get food from dead matter.
eg. bacteria of decay in soil

11

Parisitic bacteria

bacteria that take food from a live host and usually harm the host. eg. pneumonia

12

What are the five factors that affect the growth of bacteria?

-Temp
-Oxygen Concentration
-pH
-External Solute Concentration
-pressure

13

Facultative bacteria

anaerobic. Can respire with or without oxygen.
eg. E Coli

14

Obligate bacteria

anaerobic. Can only respire in the absence of oxygen. eg. Clostridium Tetani

15

Antibiotics

a chemical produced by a micr-organism that stops the growth of or kills another micro-organism without causing damage to human tissue. eg. streptomycin

16

Multi-resistant bacteria

bacteria that are resistant to almost all-known antibiotics, eg. MRSA and C-difficile

17

Growth Curve of bacteria

-lag
-log
-stationary
-decline
-survival

18

Biotechnology

use of living things or their components to manufacture useful products or carry out useful reactions.

19

Bioreactors

vessels in which biological reactions occur

20

Continuous Flow Culture

The growth of cells in an open container where nutrients are added and products are continuously removed all the time at a rate which maintains the volume of liquid in the container and the number of cells.
eg. single-cell-protein production, waste water treatment
log phase

21

Batch Culture

the growth of cells in a closed container over a short period of time under ideal conditions until all nutrients are used up.
eg. yoghurt, antibiotics
lag,log, stationary