A. Three is the minimum number of nucleotides per codon needed to encode 20 amino acids. 4×4 = 16 amino acids. (i.e. 64 different combinations of four nucleotides taken three at a time).

Since each of the 20 amino acids is chemically distinct and each can, in principle, occur at any position in a protein chain, there are 20 × 20 × 20 × 20 = 160,000 different possible polypeptide chains four amino acids long, or 20n different possible polypeptide chains n amino acids long.

Thus, the smallest combination of four bases that could encode all 20 amino acids would be a triplet code. However, a triplet code produces 64 (43 = 64) possible combinations, or codons. Thus, a triplet code introduces the problem of there being more than three times the number of codons than amino acids.

The number of different proteins comprising the human proteome is a core proteomics issue. Researchers propose numbers between 10,000 [10] and several billion [6] different protein species.

Explanation: A and D have a correlation between them because they are both enzymes that you need and you need to have free nucleotides in order to replicate your DNA. You also need free amino acids for RNA replication.

Some amino acids are encoded by more than one codon, inasmuch as there are 64 possible base triplets and only 20 amino acids….Section 5.5Amino Acids Are Encoded by Groups of Three Bases Starting from a Fixed Point

1. Three nucleotides encode an amino acid.
2. The code is nonoverlapping.
3. The code has no punctuation.

Genes that provide instructions for proteins are expressed in a two-step process.

1. In transcription, the DNA sequence of a gene is “rewritten” in RNA.
2. In translation, the sequence of nucleotides in the mRNA is “translated” into a sequence of amino acids in a polypeptide (protein chain).

These two amino acids, isoleucine and threonine, have in common the fact that they have two chiral centers.

Complete proteins, which are found in animal products such as meat, contain all the essential amino acids. Incomplete proteins, which tend to come from plant sources such as beans, do not. Although peanut butter and bread on their own are incomplete proteins, they can be used as complementary proteins.

One avocado contains about 3 grams of protein which, along with bananas, makes it one of the only fruits containing a fairly high amount of protein. Protein builds, maintains and replaces the tissues in your body. In fact, your muscles, organs and immune system are made up mostly of protein.

Combining incomplete proteins to form a complete protein Whole grains with beans (beans and rice; hummus and pita bread; bean-based chili and crackers; refried beans and tortillas) Beans with nuts or seeds (salad with chickpeas and sunflower seeds)

By combining complementary proteins — grains, like rice or bread, and plant-based protein sources, like peanuts, peanut butter or beans – you create a complete protein.

Rice and beans Both brown and white rice are low in lysine but high in methionine. In contrast, beans are high in lysine but low in methionine. As such, combining them allows you to get enough of each, as well as the remaining seven essential amino acids, to count as a complete protein.

Even though you shouldn’t use peanut butter as a dominant food source in your diet, it’s probably fine to eat every now and then in small amounts. But the main problem with peanut butter is that it’s so incredibly hard to resist. If you eat only small amounts at a time, it probably won’t cause any harm.

Animal-based protein like meat, poultry, fish, eggs, milk, and cheese are considered complete proteins. Quinoa and soy are plant-based complete proteins. Incomplete proteins don’t include all the essential amino acids.

An incomplete protein is one that does not contain all nine of those essential amino acids. Beans, specific nuts, and tofu are a couple examples of incomplete protein sources, so eating those foods alone for protein will not give you all of the amino acids your body needs.

The basic difference between white bread and whole wheat bread is that whole wheat bread has twice as much protein as white bread. This is significant because both peanut butter and bread are incomplete proteins because they lack certain essential amino acids, but combined they create a complete protein.

Broccoli, like most other vegetables, doesn’t contain enough of each of those acids, so it’s referred to as an “incomplete” protein. Examples of complete proteins include meat, poultry, fish and dairy products.

However, some contain more than others. Vegetables with the most protein include broccoli, spinach, asparagus, artichokes, potatoes, sweet potatoes and Brussels sprouts. They contain about 4–5 grams of protein per cooked cup (69, 70, 71, 72, 73, 74, 75).

Research has shown that all plants contain protein and at least 14% of the total calories of every plant are protein. Broccoli contains more protein per calorie than steak and, per calorie, spinach is about equal to chicken and fish.

Guava

The science is clear that up to 3 whole eggs per day are perfectly safe for healthy people. Summary Eggs consistently raise HDL (the “good”) cholesterol. For 70% of people, there is no increase in total or LDL cholesterol. Some people may experience a mild increase in a benign subtype of LDL.

Bananas (1.6 grams protein) You’ve heard that bananas are high in potassium (eat one for a leg cramp!) but they also contain about 1.6 grams of protein in each cup. They’re a convenient source of fiber, prebiotics, vitamins A, B6 and C, and magnesium.

According to the 2015-2020 Dietary Guidelines for Americans, eggs are one of the proteins that make up a healthy eating pattern. Research suggests that eating two to three eggs per day may have cardiovascular benefits.

Conclusion: As long as you frequently monitor your cholesterol levels, there is no reason to avoid eating 4 eggs a day. If your levels change drastically*, then adjust as needed. Otherwise, there is no known risk**.

A maximum of 2 eggs a day would suffice for an average adult – one whole and one egg white – best consumed during breakfast. Egg whites source you with quality protein. Those who require more protein can easily meet the requirement through other food items like lean meats.

Eating eggs leads to elevated levels of high-density lipoprotein (HDL), also known as the “good” cholesterol. People who have higher HDL levels have a lower risk of heart disease, stroke and other health issues. According to one study, eating two eggs a day for six weeks increased HDL levels by 10%.

Conversely, according to a study in The New England Journal of Medicine, eating two hard-boiled eggs daily increased the risk of heart attack and stroke. This is because egg yolks contain lecithin, a fat that contributes to the formation of trimethylamine N-oxide (TMAO), which can lead to those heart conditions.

Eggs are great to eat to gain healthy weight. Not only are they packed with protein, vitamins, and minerals but they also give you the energy you need to get through the day. They’re versatile, too, so you can make them however you like—scramble, fry, poach, or even make a delicious omelette.

7 things you should avoid eating with eggs

• 01/8Which foods to avoid while eating eggs? Eating right food at the right time can make you a healthy person.
• 02/8Bacon. Egg and Bacon is a combination that most people enjoy in various places.
• 03/8Sugar.
• 04/8Soy milk.
• 05/8Tea.
• 06/8Rabit meat.
• 07/8Persimmon.
• 08/8Other foods to avoid.

Eggs are one of the healthiest sources of protein and vitamin E. Regular consumption of eggs improve sperm count and motility and protect them from oxidative stress.

Most healthy people can eat up to seven eggs a week without increasing their risk of heart disease. Some studies have shown that this level of egg consumption may even help prevent certain types of stroke and a serious eye condition called macular degeneration that can lead to blindness.

Heart Health About 60 percent of the calories in eggs are from fat—much of which is saturated fat. Eggs are also loaded with cholesterol—about 200 milligrams for an average-sized egg. That’s more than double the amount in a Big Mac. Fat and cholesterol contribute to heart disease.