![lovelife132015](/avatars/49870.jpg)
lovelife132015
22.04.2020 •
Biology
Explain how it is that actin and myosin in the sarcomere never actually shorten and yet the muscle as a whole does.
Solved
Show answers
More tips
- O Other Discovering the Funniest Joke Ever Told...
- F Food and Cooking How to Make Napoleon Cake: A Step-by-Step Guide...
- F Food and Cooking From Latte to Espresso: Which Coffee Drink is the Most Popular on Earth?...
- C Computers and Internet How to Set Up Internet on iPhone? Detailed Guide with Step-by-Step Instructions...
- F Family and Home How to Teach Your Child to Speak: Tips and Recommendations...
- P Philosophy Agnosticism: Opinion or Belief?...
- S Style and Beauty How to choose the best mascara for your eyelashes...
- F Food and Cooking Discover Delicious Recipes You Can Make with Ground Meat...
- C Computers and Internet Google Search Tips and Tricks: Everything You Need to Know...
- S Science and Technology Why is there no gravity on other planets?...
Answers on questions: Biology
- B Biology Two organisms that are placed on distantly spaced twigs on a phylogenetic tree are...
- B Biology (5) 4. Identify a feed from the list provided on the information sheet that would be the most suited to use in eachof the following cases:4.1A supplement to increase the crude protein...
- B Biology Select the correct answer. When do you see a portion of the Moon passing through the Earth s umbra? O A total lunar eclipse OB. penumbral lunar eclipse Ос. total solar eclipse OD....
- B Biology Select the correct answer. When do you see a partial lunar eclipse? O A when the Moon passes through the Earth s penumbral shadow OB. when the Moon lies exclusively in the Earth s...
- B Biology Types of financial assistance that can be applied for after grade12 to study...
- B Biology Put these terms in order from least complex to most complex: organ system, tissue, cell, organ....
- B Biology Explain methods by which the rate of photosynthesis can be measured, including conditions that affect the rate...
- B Biology How is reactive oxygen species formed in red blood cells?...
- B Biology How does the structure of a phospholipid differ from the structure of a fat?...
- B Biology Smokers are more susceptible to respiratory infections because...
Ответ:
The muscle fibers are pulled by the myosin and sarcomere together, resulting in the shortening of the fibres, but the sarcomere and myosin just move.
Explanation:
During muscle contraction, each sarcomere shortens, bringing the Z discs close together. There is no change in the width of the A band but both I bands and the H zone almost completely disappear. These changes are explained by actin and myosin filaments sliding past one another, so that the actin filaments move into A band and H zone. Muscle contraction thus results from an interaction between the actin and the mosin filaments that generates their movement relative to one another. The molecular basis for this interaction is the binding of the myosin to actin filaments that generate their movement relative to one another.
Ответ: