What is the main component of the thin filaments in muscle fibers and is responsible for muscle contraction?

a) actin

b) myosin

c) actin and myosin

d) nerve and bone

Explain why scientists rejected Lamarck's ideas about evolution. What is an example that they might have used in their argument against his ideas? Enter your answer in the space provided.

What do all rodents have in common

What does a scientist do if a hypothesis is supported

Which of the following would not be a potential side effect of standard antimicrobial drugs? Group of answer choices inhibition of host protein synthesis disruption of the host's normal microbiota damage to the host's kidneys allergic reactions in

Which stage of the cell cycle involves cell growth and DNA replication? mitosis cytokinesis interphase prophase

How does the human heart organization relate to cells? To organ systems?

Why could a diet low in carbohydrates be dangerous?

What is a pathogen free environment

which object would take the most force to hold up in the air? A. a bus B. a chair C. a balloon D. a nail

In a ecological pyramid, what happens to energy, biomass and number of species as you move up? Why?