A type of cellular transport is shown. Which description best identifies this type of cellular transport? Your A. Osmosis, because energy is being used to move molecules with the concentration gradient. B. Active transport, because energy is being used to move molecules against the concentration gradient. C. Facilitated diffusion, because energy is being used to move molecules with the concentration gradient.

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 are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided

What is the average speed of a car that traveled 300.0 miles in 5.5 hours