lecture 7 protists and prokaryotes

Question 1

what is leishmania

Answer 1

kinetoplastid flagellate protist
dog is reservoir
sandfly is vector
causes liver/spleen damage

Question 2

what is the importance of protists in ecological processes

Answer 2

algal protists produce 30% of photosynthesis
could help produce global warming
carbon sink

Question 3

amoebae

respiration

Answer 3

aerobic

Question 4

amoebae_____trophic

Answer 4

heterotrophic

Question 5

amoebae

reproduction

Answer 5

asexual

Question 6

what amoebae are natural inhabitants of guts

Answer 6

entamoeba coli

Question 7

what causes dysentry, eye infections, keratitis

Answer 7

amoebae

Question 8

what is circumfluence

Answer 8

feeding method of naked amoebae

Question 9

what is circumfluence

Answer 9

feeding method of naked amoebae

Question 10

what are testate amoebae

Answer 10

enclosed in a calcareous shell
doesnt move
project cytoplasm to feed

Question 11

where do testate amoebae live

Answer 11

freshwater
marine
terrestrial

Question 12

where do radiolarians live and how do they feed

Answer 12

marine only
pseudopodia radiate from the centre reinforced by mictrotubules covered in thin layer of cytoplasm. cytoplasmic streaming carries captured prey into the main part of the cell

Question 13

what is physarum polycephalum

Answer 13

acellular slime mould

Question 14

life stages of slime mould

Answer 14

feeding stage; plasmodium

Question 15

what is physarum polycephalum

Answer 15

cellular slime mould

Question 16

life stages of slime mould

Answer 16

feeding stage; plasmodium
slug time baby
erects stalks with fruiting bodies (specialisation)
spores released
they become cells and be fertlized to make a feeding plasmodium

Question 17

primary endosymbiosis

Answer 17

eventually led to the formatioon of mitochondria and chloroplasts

Question 18

how did endosymbiosis happen

Answer 18

first occurred when a large anaerobic cellengulfed a smaller aerobic bacteria. This aerobic bacteria was able to use oxygen in the atmosphere to sustain itself and produce energy

Question 19

evidence for mitochondria

Answer 19

size of bacteria
has own ribosomes
double membranes
own genome
related to a proteobacteria

Question 20

origin of mitochondria

Answer 20

bacteria in eukaryote not digested
host cell provide protection and carbon
bacteria provide ATP