Answer:
The correct answer to fill in the blank is: D) men.
Explanation:
According to different studies made over the years, it has been revealed that men have a lower life expectancy (76 years) than women (81 years), Japanese Americans (87 years) and individuals of middle socioeconomic status.
Since men are the group with the higher risk, they can benefit more from changes in their lifestyle like exercising and having healthy diets.
<span>A: 1. period - major divisions of geologic time within each eon 2. eon - major divisions of geologic time within each era 3. era - longest interval of geologic time. :)</span>
<span>The complete question includes these choices: a. vitamin B6
b. calcium
c. water
d. protein The correct answer is c. water. Water has a peculiar chemical structure, with special and unique properties that are crucial for chemical reactions (eg good dissolving properties, resistance to pressure and fluidity throughout changes of state).</span>
A phospholipid is composed of two fatty acids, a glycerol unit, a phosphate group and a polar molecule. The phosphate group and polar head region of the molecule is hydrophillic (attracted to water), while the fatty acid tail is hydrophobic (repelled by water). When placed in water, phospholipids will orient themselves into a bilayer in which the nonpolar tail region faces the inner area of the bilayer. The polar head region faces outward and interacts with the water.
Phospholipids are a major component of cell membranes, which enclose and protect the cytoplasm and other contents of a cell. Phospholipids are also a major component of myelin, a fatty substance that is important for insulating nerves and speeding up electrical impulses in the brain. It is the high composition of myelinated nerve fibers that causes white matter in the brain to appear white.
Steroids and Waxes
LDL and HDL Particles
Illustration of a low density lipoprotein (LDL), or bad cholesterol, molecule (left) and a high density lipoprotein (HDL), or good cholesterol, molecule (right), showing their comparative sizes. JUAN GAERTNER/Science Photo Library/Getty Images
Steroids have a carbon backbone that consists of four fused ring-like structures. Steroids include cholesterol, sex hormones (progesterone, estrogen, and testosterone) produced by gonads and cortisone.
Waxes are composed of an ester of a long-chain alcohol and a fatty acid. Many plants have leaves and fruits with wax coatings to help prevent water loss. Some animals also have wax-coated fur or feathers to repel water. Unlike most waxes, ear wax is composed of phospholipids and esters of cholesterol.
This a tough one, and technically they all have to do with an authoritative body enforcing an environmental policy. But the most specific ones of them all would be the first sentence and the last two sentences.
