Answer:
The atmosphere is a closed system
Explanation:
Because inside the atmosphere open system
False
Proteins are polymers of molecules called amino acids, some contain thousands. Lipids are formed when a glycerol molecule combines with compounds called fatty acids, therefore they are not polymers because they contain one molecule and are not macromolecules. Hope this helps! :)
Answer:
Proteins can carry nutrients across the plasma membrane. There are also differnet receptros outside the cell that recieve signals as well as inside the cell.
Explanation:
Without backbone or having no backbone is considered as INVERTEBRATES.
hope its help...
--kcirejay:♥)
