3. What is the overall charge of an object that has: 17 neutrons, 17 protons, 1 point and 16 electrons? *
Positive
Negative
Neutral

Positive

Explanation:

Protons have a positive charge

Neutrons have no charge

Electrons have a negative charge

There more protons than electrons so the overall charge is positive

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.

the answer is b.) hydrogen bonds between bases.