Answer:
Each phospholipid is made up of 2 fatty acid molecules, a phosphate group and a molecule of glycerol.
The fatty acid molecules are formed by long chains of carbon and hydrogen.The phosphate group is formed by an atom of the element phosphors which is attached to four oxygen atoms. The fatty acids make the tail and are hydrophobic. The phosphate group makes the head.
Due to their structure, phospholipids are best suited to make the cell membrane in organisms.
The right answer is the promoter.
• The promoter is a nucleotide sequence that allows the transcription of the gene into mRNA. It is recognized by the RNA polymerase that initiates transcription. During the synthesis of the RNA, the promoter indicates which gene must be expressed and therefore which proteins the cell must produce. In an operon it is common to all genes.
• The operator is a segment of DNA and / or messenger RNA to which a chemical signal (a regulatory molecule) binds. It can be either a repressor signal or a transcription activating signal (DNA operator) or translation (RNA operator) of the genes of the operon. The RNA polymerase does not recognize this structure.
Fast Food often contains more sodium, carbs and sugar counts than most home cooked or healthy meals. For kids whos parents are on a budget, fast food is the often option for meals, causing calorie counts to build up, eventually turning into stages of obesity. The average child calorie intake is between 1,600-2,500 per day. It is also recommended that children under age 18 should refrain from sodium counts higher than 2,200 per day. For one meal at McDonalds, to get a cheeseburger, fries and a coca-cola beverage, you are looking at around 1,100 calories and 1,200 mg of sodium. If the child eats this two times a day, the total calorie count would be above the national average, therefore causing the child to gain weight off the extra calories.
The answer is <span>Carbon CO2, this supplies the carbon component of carbohydrates. </span>
