9. If A represents a simple multicellular heterotrophic organism, B would most likely represent
A) a single-celled photosynthetic organism
B) an autotrophic mammal
C) a complex multicellular virus
D) another type of simple multicellular heterotroph

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

How can you tell the difference between rough er from smooth er?

Fungi are classified into how many groups? a. 1 group b. 2 groups c. 3 groups d. 4 groups