Question

true or false

1. the two most important muscle proteins for contraction are titan and myosin.
2. collagen allows the muscle contraction to occur.
3. each myofiber is divided into striped units called sarcomeres.
4. when an animal is slaughtered, blood stops flowing to the muscle tissue.
5. type of myofiber that predominates in an animal is largely controlled by genetics.
6. the post mortem state is called rigor mortis.
7. meat becomes more tough with age.
8. muscle is 50% water.
9. process of contraction is fueled by glucose and glycogen.
10. normal ph in a myofiber is 2.0

Explanation:

1. The two most important muscle - contraction proteins are actin and myosin, not titan and myosin. So it's false.
2. Collagen is mainly a connective - tissue protein, not directly involved in muscle contraction. So it's false.
3. Myofibers are divided into striped units called sarcomeres. This is true.
4. When an animal is slaughtered, blood stops flowing to the muscle tissue, which is part of the post - slaughter process. This is true.
5. The type of myofiber that predominates in an animal is largely controlled by genetics. This is true.
6. Rigor mortis is the post - mortem state of muscle stiffness. This is true.
7. As animals age, meat can become more tough due to changes in connective tissue and muscle structure. This is true.
8. Muscle is about 75% water, not 50%. So it's false.
9. The process of muscle contraction is fueled by glucose and glycogen. This is true.
10. The normal pH in a myofiber is around 7.0, not 2.0. So it's false.

Answer:

1. False
2. False
3. True
4. True
5. True
6. True
7. True
8. False
9. True
10. False