protists

Question 1

what is a protist?

Answer 1

any eukaryote that is not an animal, plant or fungus

Question 2

diatoms (stramenopiles) properties
-what do they produce
-how can they be exploited

Answer 2

phytoplankton
-major marine producers.
produce 20-50% Earths oxygen.
important in carbon cycle

bind and accumulate metals such as gold and silver. biofuels

Question 3

dinoflagellates (alveolates) properties
-what kind of organisms are they
-how they migrate through water and why they do this?
-what ability do some dinoflagellates have

Answer 3

mostly marine organisms but some are freshwater.
-they migrate vertically through the water to maximise light for photosynthesis and to find food

-ability to sense light.
produce red tides- release toxins which are harmful to humans

Question 4

dinoflagallete ecology of
1) blooming
2) bioluminescence

Answer 4

1) rapid replication if nutrients are abudant
2) emit blue/green light when disturbed. may be a defence mechanism against predators

Question 5

dinoflagalletes endosymbionts and hosts

Answer 5

-diatoms
-green algae

Question 6

3 types of biomineralised skeletons.
1) RADIOLARIA
2) FORAMINIFERA
3) COCCOLITHOPHORES

Answer 6

1) shells, spines and spicules. mostly silica
2) shells or tests. mostly CaCO3, rarely silica
3) mostly CaCO3

Question 7

1)what is not a protist
2)what is a protist

Answer 7

1) e.coli

2) . Paramecium
B. Giardia
C. Plasmodium
Trypanosoma brucei
Giardia lamblia