what is the single most abundant chemical substance in the body

All living organisms contain carbon, which forms the basis for all of the organic molecules in the body. Carbon is the second most abundant element in the human body, accounting for 18% of body weight.

Why is water the most abundant solution in the human body?

Water is certainly the most abundant solvent in the body; essentially all of the body’s chemical reactions occur among compounds dissolved in water. Because water molecules are polar, with regions of positive and negative electrical charge, water readily dissolves ionic compounds and polar covalent compounds.

What accounts for 60 to 80 percent of the body’s weight group of answer choices?

Up to 60% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.

What does the term Pollex refers to?

: the first digit of the forelimb : thumb.

What is the vertical section through the body?

coronal plane: Any vertical plane that divides the body into anterior and posterior (belly and back) sections. transverse plane: Any plane that divides the body into superior and inferior parts, roughly perpendicular to the spine. sagittal plane: Any imaginary plane parallel to the median plane.

What are the top ten abundant elements in the human body?

Answer: Oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus are the most abundant elements found in the human body, followed by potassium, sulfur, sodium, chlorine, and magnesium.

What are the most commonly occurring elements in the human body?

The four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you. They are found throughout your body, mostly as water but also as components of biomolecules such as proteins, fats, DNA and carbohydrates.

Which of the following has the highest organizational level of complexity?

Organs that work together are grouped into organ systems. The organism level is the highest level of organization. An organism is a living being that has a cellular structure and that can independently perform all physiologic functions necessary for life.

Which is the most abundant element in universe?

Hydrogen is the most abundant element in the Universe; helium is second.

Which of the following is most abundant in air?

Nitrogen occupies 78% of air and oxygen occupies 21% of air, and hence nitrogen is the most abundant component of air.

What are the four most abundant gases in the atmosphere?

Usually, the 4 most abundant gases are:

  • Nitrogen (N2) – 78.084%
  • Oxygen (O2) – 20.9476%
  • Argon (Ar) – 0.934%
  • Carbon dioxide (CO2) 0.0314%

How much water should I drink a day for a 13 year old?

Toddlers: 2 to 4 cups. 4-8 years: 5 cups. 9 -13 years: 7 to 8 cups.

How much water should I drink if I weigh 90kg?

Water (in litres) to drink a day = Your Weight (in Kg) multiplied by 0.033. For example, if you are 60kg, you should drink about 2 litres of water every single day. At 90kg, you’ll around about 3 litres of water. All you need to do is multiply 0.033 to your weight in Kg.

How much water should I drink if I weigh 115?

“It depends on your size and weight, and also on your activity level and where you live,” Nessler says. “In general, you should try to drink between half an ounce and an ounce of water for each pound you weigh, every day.” For example, if you weigh 150 pounds, that would be 75 to 150 ounces of water a day.

What are the top 3 most abundant elements in human body?

The most abundant elements in the human body are oxygen, carbon and hydrogen.

What is the most abundant compound in the the human body accounting for two thirds of the weight of the body?

Oxygen is the third most abundant element in the universe and makes up nearly 21% of the earth’s atmosphere. Oxygen accounts for nearly half of the mass of the earth’s crust, two thirds of the mass of the human body and nine tenths of the mass of water.

Which of the following is one of the six most abundant elements in the human body?

The six most common elements of life on Earth (including more than 97% of the mass of a human body) are carbon, hydrogen, nitrogen, oxygen, sulphur and phosphorus.

Is water the most abundant molecule in Earth’s atmosphere?

Water is the most abundant molecule on the Earth’s surface, covering about 71% of the surface of the planet.

What are the 3 most important characteristics of water for the human body?

Adhesion, Cohesion and Lubrication

Water is able to stick to other polar substances.

What is the dissolved substance in a solution?

The solute is the substance that dissolves. The solvent is the dissolving medium.

What makes up the highest percentage of body weight?

Water is generally the largest portion of the body, accounting for about 60 percent of total weight. In an average 70 kg (about 150 pounds) person, that amounts to about 40 liters of water. Of the remaining 40 percent of body weight, the adult skeleton accounts for about 7-15 percent.

Which of the following organs contains the highest percentage of water?

Water exists throughout the body. Cells contain 60% of all water in the body, with roughly one-third of the remainder, surrounding the cells. Some organs contain much more water than others. The brain and kidneys possess the highest percentage of water; the bones and teeth contain the lowest proportion.

What percentage of your total body weight is made up of water Issa?

It is used for transporting food materials in the body, and it happens to be where a majority of the biochemical reactions occur. For the very obese, we see water representing around 45% of total body weight, and then up to 70% in the more lean people. The average is going to be around 60% in the general person.

What is the Pollex in anatomy?

thumb, also called pollex, short, thick first digit of the human hand and of the lower-primate hand and foot. It differs from other digits in having only two phalanges (tubular bones of the fingers and toes). The thumb also differs in having much freedom of movement and being opposable to tips of other digits.

Are Pollex and digital the same?

Pollex and digital refer to the same structures. In anatomical position, palmar is anterior. Mental refers to the forehead region. Peroneal is the area between the anus and external genitalia.

What is anatomical position used for?


what is the single most abundant chemical substance in the body



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