Janelle should talk to any trusted adult for advice. I'm assuming she can't just get her local physician any time she wants to talk to them. Someone else who drinks is not reliable. The people at the party will probably drink too.
Answer:
C. If microbes can live in toxic arsenic, they have evolved.
Explanation:
After reading the chapter "Earthbound Extraterrestrial? Or Just Another Microbe in the Mud?" We can conclude that if microbes can live in toxic arsenic, they have evolved. This is because toxic arsenic is not a favorable environment for any living thing. Living conditions in a toxic arsenic environment are very inhospitable for the development of microorganisms that are able to survive under these environmental conditions. However, some microorganisms can survive and reproduce more microorganisms with the same survivability. This process indicates that these microorganisms have evolved since this new generation has a feature that the past generation did not have.
Answer: a. action potential frequency is high enough that no relaxation of muscle fibers occurs.
Explanation:
A tetanic contraction occurs due to repeated stimuli at short intervals. In this situation, the muscle fiber does nor relax and contracts again. It is a process of sustained contraction of muscles, which evoke when the motor nerve innervates a skeletal muscle and emits the action potential at high rate. The muscles become hyperactive in this condition.
The virus that infect bacteria are called bacteriophage ! Hope this helps! :)
Your answer would be <em>D. </em>At least I would assume so
