What is a muscle fiber? the myosin that makes up the contractile unit of a muscle cell the connective tissue outer covering of a muscle a group of muscle cells that make up the same muscle group a single cell of a muscle?

Select the best answer for the question, ly 12. which of the following behaviors is not an inherited behavior?

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.

Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.