Explain how Botox works As a cosmetic procedure, Botox is injected in very small doses into specific facial muscles to reduce wrinkles. It is derived from a neurotoxin that prevents the release of ACh at the neuromuscular junction.

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.

Isolated volcanic peaks on the ocean floor are

Some substances but not other can cross the (blank) membrane of a cell