This picture shows the United States Arctic National Wildlife Refuge, a large portion of Alaska that is protected from human activities that would affect living things in the area as well as nonliving resources that support living things. Even though oil and other resources in the area could be collected and sold by humans to increase American wealth, construction is prohibited in the area.

The mitochondrion functions lipid storage protein synthesis photosynthesis dna replication atp synthesis

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.

Which of these parts of the membrane large moecules pass through it ?