BASICS (ADVANCED)

List chemical elements that constitute major important biopolymers. (For example, C is used in biopolymers, and Au is not)

List all chemical elements used in catalytic centers of natural enzymes. (For example, Fe is used, whereas Au is not).

May somewhere in the Universe exist a Life similar to Life on Earth, but based on a different set of chemical elements, for example, Si substituted for C?

May somewhere in the Universe exist a Life similar to Life on Earth, but using mirror molecules, for example, D-amino acids substituted for L-amino acids?

May somewhere in the Universe exist a Life similar to Life on Earth, but composed of different isotopes, for example, with abundant deuterium and rare protium?

Why living organisms are not formed every day from decaying flesh, which is a rich source of biological molecules? In other words, why abiogenesis is so problematic?

Why whole cells and even biopolymers are easily damaged by freezing and thawing?

Where in the Solar System our Life from Earth can survive and grow?

Why many microorganisms acidify surrounding medium, whereas some prefer alkalinization?

List types of covalent bonds used in living organism for cross-linking biopolymer molecules.