The diffusion of what ion, across the neuronal membrane, is responsible for the local currents that depolarize regions of the axon to threshold?

Would you classify petroleum as renewable or nonrenewable resource? justify your answer in two or more complete sentences

How does gene flow affect a population's genetic variation?

The giant salamander is one of the few vertebrates found in the upper reaches of a river. How is this organism specialized to find food?

What is the role of the F‑factor in conjugation? a. It allows auxotrophic bacterial cells to survive on minimal medium so that conjugation can occur. b. It contains genes necessary for the formation of the pilus. c.

Golgi blank and blank proteins for export out of the cell

Which of the following is not a contributing factor to environmental policy decisions? a. human health b. availability of natural resources c. environmental health d. none of the above

A 32 year old female presents with lower leg pain, with swelling and redness. which finding could have caused her condition

Which characteristics work well in a dichotomous key? a) smooth or rough b) green or round c) triangle or purple d) tall or bumpy

Which of the following is a characteristic that could be applied to both living and nonliving things

What is wrong with the cellular respiration equation?