Protein synthesis occurs in two stages. During transcription,
is generated from a template strand of
This takes place in the
of the cell. The transcribed molecule is then translated into
a
by

The answers to the blank spaces are as follows:

Gene expression is the process whereby the gene is used to synthesize proteins. It is made up of two processes as follows:

Learn more about gene expression at: link

mRNA, DNA, Nucleus, protein, ribosome

Explanation:

mRNA is a messenger RNA which is produced during transcription by using a template strand of DNA in the nucleus. The mRNA is then translated into protein by ribosome of the cell. This whole concept is part of the Central Dogma of Life.

the answer is yes, they are born/created, then they grow to their limit then produce offspring, then die.

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.