Enzymes are considered catalysts, they help reactants and can be used over and over
<span>D is the correct answer. Want is the most abstract choice here that can be perceived or sensed. Jogging, laughing and punching are all more physical actions.</span>
Answer:
the thin filaments are pulled away from one another, thereby reducing their ability to interact with myosin
Explanation:
The myofibril is the basic unit of a muscle cell. Each myofibril is composed of contractile units known as sarcomeres which may contain two different types of myofilaments: thick myofilaments and thin myofilaments. The thick filaments are known to have a constant length, and they consist especially of myosin proteins. These filaments (thick) do not extend to the ends. On the other hand, the thin filaments extend in from each end, and they are mainly composed of actin proteins that serve as tracks for the movement of myosin proteins.
Answer is in the attachment.