In photosynthetic cells as green algae and plant cells, , synthesis of ATP by the chemiosmotic mechanism occurs during . a. photosynthesis and respiration b. respiration only c. photosynthesis only d. neither photosynthesis nor respiration

Which best describes the scientific process

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

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.