protists

Question 1

what is a protist?

Answer 1

any eukaryote that is not an animal, plant or fungus
unicellular

Question 2

diatoms (stramenopiles) properties
-what do they produce
-how can they be exploited
-what is there cell wall made of

Answer 2

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

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. produce red tides which are toxic
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 of protists
1) RADIOLARIA
2) FORAMINIFERA
3) COCCOLITHOPHORES

-what kind of protist are they
-what do they contain

Answer 6

1)marine protist. biomineralised skeleton. involved in carbon cycle. contains shells, spines and spicules. mostly silica

2) mostly marine protist. contain pseudopia for locomotion, food, digestion ect.
shells or tests. mostly CaCO3, rarely silica

3) calcifying algae. 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

Question 8

what is apicomplexan diseases (single cell)

Answer 8

1) malaria
2) toxoplasmosis
3) T. brucei
4) giardiac
5) trichomonas