If your backbone was injured at your waist, then you would possibly be temporarily paralyzed. This is called paraplegic, if i am not mistaken.
I believe it is J but not a 100% sure
BOC Sciences has experts with extensive experience in counter ion analysis.
<u>https://www.bocsci.com/solutions/counter-ion-analysis.htm</u>
Each myofibril is attached at either end of the muscle fiber, when sarcomeres shorten, the muscle fiber Shortens
Mechanism :
Myofibrils are components of the animal skeletal muscles that are made up of sacromeres. They perform the muscular contraction and relaxation via the sliding filament model.
To produce motion, A cross-bridge forms between actin and the myosin heads triggering shortening of the sacromere. This shortening of the sacromere results in the contraction of the muscle fibers, which the net effect can be seen to be a shortening of the fibers.
To learn more about myofibril refer to : brainly.com/question/15461128
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Lipids is the correct answer