Explanation:
These mutations can either be inherited or spontaneous. When mitochondria stop functioning, the cell they are in is starved of energy. So, depending on the type of cell, symptoms can vary widely. As a general rule, cells that need the largest amounts of energy, such as heart muscle cells and nerves, are affected the most by faulty mitochondria.
Answer: option C) enables the "let-down" reflex to occur when a woman breastfeeds her baby.
Explanation:
Oxytocin is a hormone secreted by the posterior pituitary gland. It stimulates the contractions of smooth muscles such as
- uterus facilitating childbirth
- ducts of the mammary glands resulting in ejection of milk. Thus, it is also called as milk-let-down-ejection factor.
So, option C is the correct answer
Answer:
Speciation, it's the formation of a new organism in evolution
Hydrophilic (water-loving) or could be called water, it mean attracting water molecules as close as possible, the phospholipid is made up of a head that is polar, and a tail that is non polar or in another words called “hydrophobic” , this means that the head of the phospholipid is attracted to water molecules ( this helps you understand the structure of cell membrane formation). Steriod, a class of lipids, some hormones like cholesterol are made up of steroids. They maintain fluidity of cell membrane. Example: oestrogens
