What is a limitation of Jillian's cell model?
Jillian made a model of an animal cell. She used a round
balloon to represent the cell membrane She pushed
objects like marbles and rocks into the balloon to show cell
parts, then filled it with water to show fluid inside the cell
It does not make up the tissues of a living thing,
It does not show the functions of the cell parts,
It is larger than a real animal cell,
It is more complex than a real animal cell.

Witch type of microscope is used to view very small cell components like proteins and dna?

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.

State officials are considering constructing a road through a forested wilderness area. this action will likely affect the forest ecosystem in various ways. part a: predict how the construction of a road could negatively affect plants and animals in that ecosystem. (3 points) part b: describe one way that the construction of a road could have a positive impact of the forest ecosystem. (1 point)