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Which of the following codon does not code for any amino acids?

The corresponding RNA stop codons are UAG, UAA and UGA. Phosphates are not part of genetic code. ATP is adenosine triphosphate which serve as energy currency for cell but does not code for any amino acid. Correct option is D.

What are the 3 codons for stop?

UGA, UAA, and UAG are stop codons.

Do nonsense codons code for amino acids?

Stop codons are also called nonsense codons because they do not code for an amino acid and instead signal the end of protein synthesis. Thus, nonsense mutations occur when a premature nonsense or stop codon is introduced in the DNA sequence.

Which of the following does not code for any proteins?

When a gene is transcribed from DNA to RNA, the resultant coding RNA, or mRNA, requires further processing before it can be made into protein. The mRNA is composed of sequences known as introns and exons. The introns do not code for any protein and are removed from the mRNA before it is made into protein.

What are exons?

An exon is the portion of a gene that codes for amino acids. In the cells of plants and animals, most gene sequences are broken up by one or more DNA sequences called introns.

What are the two parts of protein synthesis?

Protein synthesis can be divided broadly into two phases – transcription and translation. During transcription, a section of DNA encoding a protein, known as a gene, is converted into a template molecule called messenger RNA (mRNA).

What is the first step of protein synthesis?


What is the second step of protein synthesis called?


What is the fourth step of protein synthesis?

The fourth step of protein synthesis: disassembly of the posttermination complex is catalyzed by elongation factor G and ribosome recycling factor, a near-perfect mimic of tRNA. Cold Spring Harb Symp Quant Biol. 2001;66:515-29.

Are there 25 different amino acids?

There are “25” different amino acids. A sequence of “FOUR” nitrogen bases will specify one amino acid. When Transcribing RNA, Adenine always paris with “THYMINE”, and cytosine always pairs with guanine. This brings amino acids to the ribosomal subunits.

What is the first step of protein anabolism?


What are the 5 steps in protein synthesis?

The major steps are:

  1. (a) Activation of amino acids:
  2. (b) Transfer of amino acid to tRNA:
  3. (c) Initiation of polypeptide chain:
  4. (d) Chain Termination:
  5. (e) Protein translocation:

Which protein is used in metabolism?

Because the processing of amino acids results in the creation of metabolic intermediates, including pyruvate, acetyl CoA, acetoacyl CoA, oxaloacetate, and α-ketoglutarate, amino acids can serve as a source of energy production through the Krebs cycle (Figure 3).

Where is amino acid stored in the body?

Amino acids are not stored in the body. The individual amino acids are broken down into pyruvate, acetyl CoA, or intermediates of the Krebs cycle, and used for energy or for lipogenesis reactions to be stored as fats.

How is protein removed from the body?

Some people, despite taking an adequate amount in through their diet, lose too much protein. The most common way that protein is lost is through the kidneys. The kidneys act like a sieve in filtering the blood, with waste excreted as urine.

What are the waste products of protein metabolism?

They are ammonia, urea, uric acid, and creatinine. All of these substances are produced from protein metabolism.

What is the most toxic nitrogenous waste?


What is the major excretory product of protein metabolism?

Nitrogen Wastes | Back to Top Nitrogen wastes are a by product of protein metabolism. Amino groups are removed from amino acids prior to energy conversion. The NH2 (amino group) combines with a hydrogen ion (proton) to form ammonia (NH3). Ammonia is very toxic and usually is excreted directly by marine animals.

What is the liquid that carries your waste out?

Plasma carries water, salts and enzymes. The main role of plasma is to take nutrients, hormones, and proteins to the parts of the body that need it. Cells also put their waste products into the plasma. The plasma then helps remove this waste from the body.

Does peeing flush out toxins?

The urinary system works as a filter, removing toxins and wastes from your body through urine. It uses a series of tubes and ducts to pass this waste. These tubes are connected to your blood vessels and digestive system. Your urinary system helps the rest of your body work properly.

Why is blood called plasma?

The word “plasma,” derived from the ancient Greek “to mold,” had been in use in medicine and biology for some decades when American chemist and physicist Irving Langmuir (1881-1957) began experimenting on electrical discharges in gas at the General Electric Research and Development Center in upstate New York.

What happens if waste is not removed from the body?

The kidneys filter out the waste products and excess fluids from the body and dispose of them in the form of urine, via the bladder. If your kidneys did not remove this waste, it would build up in the blood and cause damage to your body. The actual filtering occurs in tiny units inside your kidneys called nephrons.

How do kidneys remove waste?

The kidneys remove waste products called urea from the blood through tiny filtering units called nephrons. There are about one million nephrons in each kidney. Each nephron consists of a ball formed of small blood capillaries, called a glomerulus, and a small tube called a renal tubule.

How does waste leave the body?

The urinary tract is a major part of the excretory system. It filters wastes and water from the blood, and eliminates them from the body. The kidneys produce a waste product called urine using special functional units called nephrons. The urine is then excreted from the body.

How do you get rid of body waste?

You remove waste as a gas (carbon dioxide), as a liquid (urine and sweat), and as a solid. Excretion is the process of removing wastes and excess water from the body….Excretion.

Organ(s) Function Component of Other Organ System
Skin Sweat glands remove water, salts, and other wastes. Integumentary system

What foods detox your body?

9 Foods to Naturally Detox

  • Asparagus. Asparagus contains glutathione, a well-known antioxidant that promotes detoxification.
  • Broccoli. Broccoli contains sulforaphane, which is great for fighting off infectious cells in our bodies.
  • Grapefruit.
  • Avocado.
  • Kale.
  • Artichokes.
  • Collard greens.
  • Beets.

What helps to remove toxins and waste?

Your kidneys filter excess toxins and waste from your blood and release them in your urine….Your liver:

  • filters your blood.
  • processes nutrients.
  • removes toxins, such as the byproducts from the breakdown of medications and alcohol.

What is the best cleanse to lose weight?

Here are some examples of popular weight loss cleanses:

  • Whole30: A 30-day diet cleanse that eliminates multiple groups of foods, including sugar, dairy, legumes, grains and alcohol.
  • Juice Cleanses: Typically lasting 3–7 days, these cleanses eliminate all foods other than juice and water.

How can I drop 20 pounds fast?

Here are 10 of the best ways to quickly and safely drop 20 pounds.

  1. Count Calories.
  2. Drink More Water.
  3. Increase Your Protein Intake.
  4. Cut Your Carb Consumption.
  5. Start Lifting Weights.
  6. Eat More Fiber.
  7. Set a Sleep Schedule.
  8. Stay Accountable.