What is a protein that is the main component of the thick filaments in muscle fibers and is responsible for muscle contraction?
actin
myosin
actin and myosin
nerve and bone

Albinism is an inherited genetic disorder. explain what it is meant by inherited genetic disorder

Which of the following is a true statement? question 8 options: populations can't evolve, only individual organisms. individuals have adaptations that can change over time. individuals have traits that may or may not make them successful at reproduction. individuals evolve to have adaptations.

What kinds of molecules can pass through the cell membrane without any problem?