Answer:
A gene is a section of a double-stranded molecule known as DNA. This molecule is found within the nucleus of the cell, contained in threadlike structures called chromatin. The two strands form a double helix linked by a series of paired bases. The base adenine is always linked to thymine and the base cytosine is always linked to guanine.
Answer:
Many scientists favor the RNA world hypothesis, in which RNA, not DNA, was the first genetic molecule of life on Earth. Other ideas include the pre-RNA world hypothesis and the metabolism-first hypothesis. Organic compounds could have been delivered to early Earth by meteorites and other celestial objects
Answer:
B) commensalism
Explanation:
The symbiotic relationship between Remoras and sharks is a commensalism relationship where the the shark neither benefit nor loss from such relationship
Commensalism relationship is a relationship in which the one of the living organism benefits from associating with another organism (host organism). The commensal organism benefits such things as locomotion, food, shelter etc.
The host organism neither benefit nor get harmed
From the question, Remoras are the commensal organism while sharks are the host organism
I believe D, as prokaryotes come in a very wide range.
Answer:
a region on an enzyme that binds to a protein or other substance during a reaction.
