Oct 28 Flashcards Preview

EEOB 3310 > Oct 28 > Flashcards

Flashcards in Oct 28 Deck (18):
1

What was a significant advantage of harnessing electron transport for proton export outside of the cytosol?
a) no consumption of ATP
b) consumption of ATP
c) higher intracellular proton concentration

a) no consumption of ATP

2

How were mitochondria and plastids determined to have been derived from ancient bacteria?
a) fossil evidence
b) cell membrane
c) 16S rRNA
d) location in the cell

c) 16S rRNA

3

Pathogens have a (high/low) reproduction rate

high

4

What is the difference btw primary and opportunistic pathogens?

Primary pathogens infect healthy hosts
Opportunistic pathogens infect compromised hosts

5

What is antagonistic evolution?

coevolution w/ interacting species

6

P. aeruginosa is associated w/ what condition?

Cystic fibrosis, where mucus in lungs allows anaerobic bacteria to thrive

7

What is coincidental evolution?

virulence is a is a byproduct of selection on other traits

8

What bacteria normally grows in soil but also in humans

C. tetani

9

What is short-sighted evolution?

traits that increase short-term fitness may actually be detrimental via high virulence

10

What is the trade-off hypothesis?

Pathogenicity and transmissibility shape the alleles that rise to high frequency

11

Diseases transmitted by physical contact have (high/low) virulence

low

12

Which old bacterial phylum has the most species?

proteobacteria

13

Proteobacteria can invade
a) animals
b) plants
c) both

c) both

14

What are facultative symbionts?

do not need to live w/ another organism

15

Hamiltonella defensa invade what species?

aphids

16

Aphids infected w/ Hamiltonella defensa are resistant to what?

wasps

17

What handicap do aphids infected w/ Hamiltonella defensa have?

less reproduction

18

What does rapid response refer to?

Host acquires adaptive benefit from endosymbiont without having to evolve it de novo