Why do viruses need living hosts, such as bacteria or eukaryote cells? a) the host cell is the source of food for the virus. b) viruses depend on the host cells that they infect to reproduce. eliminate c) viruses lack cell structure and cannot survive without a host cell. d) viruses depend on a host cell because they lack their own dna or rna.

Some species of wasps are social. the queen starts a colony from scratch each spring. she builds a small nest, and lays and raises a group of female workers. the workers enlarge the nest while the queen continues to lay eggs. unfertilized eggs become males that mate with newly hatched females. all of the wasps except the newly fertilized females die by the summer. which best describes this behavior? a)it is beneficial only to the males that do not fertilize eggs. b)it is beneficial only to the female workers that are not fertilized. c)it is beneficial to each one of the individual colony members. d)it is beneficial to the whole species, but not to all of the individual members.