The smallest unit of life would be the cell, for every living thing is made of cells, and no living thing is smaller.
Answer:
Some of the energy released by ATP hydrolysis is used in muscle movement while the rest is lost as heat.
Explanation:
According to the second law of thermodynamics, when energy is transformed from one form to another, some energy is used to perform work while the rest is lost as heat to the surroundings. The energy heat energy lost to the surroundings cannot be used to perform functions.
According to the given information, the chemical energy released from the breakdown of ATP is converted into mechanical energy during the movement of a muscle. However, some of the energy released from ATP is lost as thermal energy and is not available to serve in the movement of muscles. This loss of part of the energy as heat during muscle movement explains that the process follows the second law of thermodynamics.
Answer:
b........................
1. The barometer pressure would be rising
2.The pressure on the barometer would be dropping
Hope I helped!
Answer:
The correct order is: 6) Sarcoplasmic reticulum releases calcium ions, 2) Calcium ions bind to troponin, 5) Tropomyosin moves to expose active sites of actin, 4) ATP is split into ADP and P, 1) Myosin head binds to actin, 7) ADP and P released from myosin, 3) Myosin cross-bridges bend, pulling actin toward center of sarcomere.
Explanation:
The ability to contract is an important property of the muscle cells and is fundamental to animals because muscles not only make locomotion possible but are also responsible for the correct functioning of organs (including the heart).
The mechanism behind muscle contraction is the sliding of filaments in a structure called sarcomere, which mostly involves the presence of actin and myosin filaments.
For muscle contraction to happen, there needs to be a <u>stimulus coming from the nerve that innervates said muscle</u>. This stimulus generates the release of <u>calcium ions</u> that will bind to a protein called troponin and will lead to the exposure of the active site of actin so it can bind to the myosin head. <u>This process requires ATP</u>.
