I believe at the beginning, the body used up ATP energy in the muscles to support the enduring muscle contraction activities. Once the ATP was used up, the body had to switch to lactic acid fermentation in order to get energy needed support a continued muscle contraction. Muscles need energy to produce contractions, this energy is derived from adenosine triphosphate present in muscles. Muscles tend to contain only limited amount of ATP, therefore when depleted ATP needs to be resynthesized from other sources.
Precipitation is rain. Or well, rain, snow, sleet, or hail too i suppose.
Answer:
plant cells form the cell plate in between the two daughter cells in mitosis,
1. ?
2. The tip of the pistil is sticky so it can trap pollen.
3. The pollen is the male sex cell, so without it, the female sex cell (the ovule) cannot reproduce seeds.
Answer:
In order for polar compounds to enter into the hydrophobic space of phospholipid tails, it would need to break the many <u>hydrogen</u> bonds
Explanation:
In the presence of water, the hydrophobic tails tend to interact with each other, creating a hydrophobic space from which water is excluded and in which other hydrophobic molecules can be trapped, while the polar head interacts with water, and is solvated, preserving the hydrophobic part from all contact with water. For a hydrogen bridge to form, a molecule that has hydrogen attached to an atom of high electronegativity and another molecule that has another electronegative atom with high electron density (that is, a negative partial charge) is required. Water molecules in the bulk of the body of water maintain multiple interactions with other molecules through an extensive network of hydrogen bridges, so for polar compounds to enter, it would be necessary to break many of these bonds.