You have designed a drug that is supposed to bind to the myosin binding sites on actin. You inject it into a relaxed muscle, but find that none of the drug bound. Which of the following explains why?

A) There are no myosin binding sites on actin.
B) Troponin molecules are covering myosin-binding sites on actin.
C) The myosin binding sites are covered by ATP.
D) The myosin binding sites on actin are covered by tropomyosin.
E) None of the choices is correct

Seen in some gram-positive bacilli, occurs when only the inner portion of a cell wall is deposited across the dividing cell. this new cross wall puts tension on the outer layer of the old cell wall. eventually, the outer wall breaks at its weakest point with a snapping movement that tears it most of the way around. the daughter cells can then remain hanging together almost side by side being held by a small remnant of the original outer wall. choose from the following statements the ones that correctly discuss reproduction using binary fission in a bacterial cell. select all that apply. view available hint(s) select all that apply. due to the stretching of the cytoplasmic membrane, both cells will contain a complete genome. each daughter cell will contain an equal number of organelles. the daughter cell will be a permanently smaller copy of the mother cell but will contain a complete genome. each daughter cell is an exact copy of the other, both genetically and morphologically

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

What are the three types of counseling established by marine corps policy?