What type of organism uses energy from sunlight and converts it to chemical ener

Question

What type of organism uses energy from sunlight and converts it to chemical energy? chemotrophs phototrophs heterotrophs autotrophs None of the answers is correct. What type of organism obtains chemical energy from oxidation of complex carbon molecules? chemotrophs phototrophs heterotrophs autotrophs None of the answers is correct. What type of pathway can be either anabolic or catabolic depending on the energy conditions of the cell? amphipathic amphiprotic amphibolic amphoteric None of the answers is correct.

Explanation / Answer

Living organisms can be classified according to the energy pathways as:

a) Autotrophs - organisms that make energy rich compounds from inorganic sources (eg. plants)

i) Phototrophs - uses light energy to synthesize complex carbon compounds

ii) Chemotrophs - uses inorganic compounds from chemical reactions to synthesize complex carbon componds

b) Heterotrophs - organisms which feed on other organisms for energy

i) Chemoheterotroph - uses inorganic energy sources (chemolithoheterotrophs) or organic energy sources (chemoorganoheterotrophs)

ii) Photoheterotroph - organisms utilize light energy and organic compounds for energy

Answers:-

1. Phototrophs

2. Heterotrophs

3. Amphibolic

Amphiphatic - is a molecule which has both hydrophobic and hydrophilic elements in it

Amphiprotic - are solvents which can act as both proton donors and proton acceptors

Amphoteric - are compounds which can act as both acid and base

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