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

The answer is B.) myosin

Both protein molecules myosin and actin are responsible for muscle contraction but myosin is the main protein component of thick filaments whereas actin is the main protein component of thin filaments. Hope this helps.

its b

Explanation:

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.

the correct answer is b. possesses the characteristic of compartmentalization of organelles, wherein the organelles are bound by membranes.

explanation: