Which of the following describes the primary structure of amino acids? A chain sequence of amino acids
Hydrophobic interactions between side chains
Disulfide bridges between side chains
Alpha helix coil held together by hydrogen bonding

This is what i found on google “phytoplankton, tiny organisms that live in the ocean, are autotrophs. some types of bacteria are autotrophs. most autotrophs use a process called photosynthesis to make their food.” i hope this you for what your looking for