Heterotroph or Autotroph
Define a heterotroph.
Organisms that must consume their food.
What is photosynthesis?
Conversion of sunlight into sugars.
What do the prefixes (photo-) and (chemo-) mean?
photo = light
chemo = chemical
Based on this food web, which organism(s) are autotrophs/ producers? Why?
Phytoplankton because they do not consume other organisms for food.
What is the difference between herbivores, omnivores, carnivores?
What they eat.
Herb = plants
Carn = meat
omi = both
Define an autotroph.
What is cellular respiration?
Conversion of sugars into energy.
What is the same and different between chemoheterotrophs and chemoautotrophs?
Both get their energy from chemical reactions but get their carbon from different places.
Chemoheterotrophs (organic)
Chemoautotrophs (inorganic)
Based on this food web, which organism(s) are heterotrophs/ consumers? Why?
Everything except phytoplankton because they must consume other organisms for food.
Where does the bottom of the food chain get its energy from?
Primarily from the sun
What are the alternate names for heterotrophs and autotrophs?
producers, consumers
Are organisms that photosynthesize autotrophs or heterotrophs?
autotrophs
Humans are examples of....
chemoheterotrophs
Based on this food web, what are the two possible sources of energy for phytoplankton?
- the sun
- inorganic chemicals
What is chemosynthesis?
Creating food from inorganic chemicals.
What do the prefixes (auto-) and (hetero-) mean?
auto = self
hetero = other
How are photosynthesis and cellular respiration connected?
The products of one process are the reactants of the other process.
Give an example of photoautotroph.
Answers may vary.
Based on this food web, where do the cod in this foodweb receive their glucose from?
Scallop, Herring, Mackerel
Based on this food web, identify one secondary consumer.
Mackerel, herring, cod, dog fish, seal, tuna
What types of organisms do cellular respiration?
heterotrophs and autotrophs
How do photosynthesis and cellular respiration work together to help ensure the health of the Earth?
They recycle oxygen.
Thiobacillus bacteria are examples of photoautotrophs, chemoautotrophs, photoheterotrophs, or chemoheterotrophs?
chemoautotrophs
If the population of phytoplankton suddenly decreased drastically what is likely to happen to the other organisms in this food chain?
The populations of the other organisms would decrease as well.
Why are autotrophs considered the foundation of the food chain?
Because they are what all other organisms (heterotrophs) must consume to survive.