Answer:
Antagonists
Explanation:
Antagonist induce the opposite effect to that of the neurotransmitter. They exert their effects by binding and altering the site at which the neurotransmitter functions. The antagonist may act competitive or non-competitive meaning they bind to the active site or non-active site, respectively.
C_____________________________________________________
Answer:
A single antibody gene can code for different related proteins, depending on the splicing that takes place post-transcriptionally.
Explanation:
According to the "one-gene, one-enzyme hypothesis", a gene code for single specific enzyme only. Beadle and Tatum proposed the one-gene, one-enzyme hypothesis that states that a gene encodes the genetic information for the synthesis of one enzyme only. However, alternative splicing in eukaryotes allows the formation of more than one related proteins/enzymes from a single gene.
For instance, alternative splicing of single primary transcript transcribed from an antibody gene allows the formation of multiple proteins. The primary transcript encoded by this gene has a segment of the gene that serves as either intron or exon. Depending on particular combinations of exons retained after splicing, multiple related proteins are formed by respective mRNA.
Answer:
see below hope this helps !
Explanation:
Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent.
Sexual reproduction involves two parents and produces offspring that are genetically unique.
Answer:
The correct option is 'c'
The archaea and bacteria diverge from early eukarya.
Explanation:
The cell wall material is different from archaea with bacteria as the cell wall of archaea lack peptidoglycan and contain lipid and hydrocarbons rather than fatty acid but the cell wall of bacteria contain peptidoglycans.
Archaea and bacteria both derived from eukarya as they both have similarities with eukarya.
The similarity between archaea and bacteria is that they both share lateral gene transfer.
There are similar features that are seen between archaea and bacteria like protein secretion,ATP production,protein modification etc.
Both bacteria and eukarya belongs to prokaryotes and the membrane of both eukarya and bacteria contain unbranched fatty acid chain that are attached to glycerol with ester bond.