<em>Answer is B. The fossils in the lower layers are older than the fossils in the upper layers.</em>
The molecule shown below is a molecule that is generally termed as the energy currency molecule of the cell, and that is ATP.
The components of it include:
1. Adenine nitrogenous base, the far left
2.Ribose, sugar the same sugar found in RNA molecules, middle.
3. Triphosphate - 3 covalently bound phosphate groups ready to split apart as they don't typically like being bonded in that manner, due to charges on phosphate, being negatively charged.
- The presence of calcium in the sarcoplasm is directly responsible for exposing the binding sites on actin.
- Rigor mortis occurs after death because detachment of crossbridges does not occur due to the lack of ATP
<h3>What is Sarcoplasm?</h3>
This is defined as the the cytoplasm of striated muscle cells in living organisms .When calcium is present, the binding sites on actin are exposed.
Rigor mortis occurs after death and involves stiffening of the muscle tissue because detachment of cross bridges does not occur due to the lack of ATP.
Read more about Rigor mortis here brainly.com/question/25812860
Answer:
sensors, control center, communication system, target
Explanation:
Answer:
Enzymes help speed up chemical reactions in the human body. They bind to molecules and alter them in specific ways. They are essential for respiration, digesting food, muscle and nerve function, among thousands of other roles.
