Which of the following is NOT a true statement about the myofilaments responsible for contracting and relaxing muscles? A.
For body movement to happen, myosin and actin must float away from one another to expand the muscle.
B.
Actin are relatively thin strands of protein that attach to one end or the other of the sarcomere.
C.
Myosin are relatively thick strands of protein and are studded with heads resembling knobs.
D.
In a sarcomere, strands of myosin float between strands of actin.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

"a.) well–developed vascular system."

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project