Answer: Option A) Parathyroid glands
Explanation:
The Parathyroid gland located in the neck region helps in the secretion of an hormone called Parathormone.
This hormone helps to raise the levels of calcium ions in the body, by preventing the loss of calcium ions through urine, and also preventing excess deposit of calcium ions in the bone, thus regulating bone density.
Answer:
The hydrophobic tails of the phospholipids
Explanation:
Because the phospholipid bilayer is made up of a hydrophillic head and a hydrophobic tail, the phospholipids spontaneously form a bilayer in water. This is because the hydrophobic tails are repelled by the water, meaning they retreat into one another, whereas the phosphilipid heads are attracted to water. This means the heads form the outside of the layer, and the tails form the inside of the layer.
Answer:
Biotic factors are all of the living organisms within an ecosystem. These may be plants, animals, fungi, and any other living things. Abiotic factors are all of the non-living things in an ecosystem. ... Abiotic factors are especially important because they directly affect how organisms survive.
Explanation:
