Major Pathways in Cells (CH 10)

Question 1

Autotrophs

Answer 1

Some species, notably bacteria and plants, can grow and reproduce by utilizing inorganic sources of these essential elements

Question 2

Photoautotrophs

Answer 2

Obtain most of their energy by photosynthesis and their main source of carbon is CO2.

This catergory includes photosynthetic bacteria, algae, and plants.

Question 3

Chemoautotrophs

Answer 3

Obtain their energy by oxidizing inorganic molecules and utilizing CO2 as a carbon source.

Some bacterial species are chemoautotrophs but there are no eukaryotic examples.

Question 4

Heterotrophs

Answer 4

Heterotrophs, such as animals, need an organic carbon source.

Question 5

Photoheterotrophs

Answer 5

Photosynthetic organisms that require an organic compound as a carbon source.

Question 6

Chemoheterotrophs

Answer 6

Non-photosynthetic organisms that require organic molecules as carbon sources.