Which of the following are TRUE about water, as the MOST abundant molecule in the human body? Water makes up approximately 75% of a cell's weight Water concentration in the same throughout organ systems in the body Most organisms can live without water Water has the same abundance in human tissues throughout a person's life
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Water is the most abundant molecule found in living organisms. Most mammals, in fact, are approximately 70% water by weight. About two-thirds of this water is present inside cells. The other one-third is present outside cells (e.g., in blood plasma or other body fluids). Why is water so important to cells? Question 18 options: Water is stored in cells to be used when the organism gets thirsty. Almost all chemical reactions in life process occur in solutions with water. The main structural component found in plasma membranes and cell walls is water.
Sri K.
Name two features of the water molecule(s) that play a huge role in contributing to the chemical properties of water: Which of the following does not apply to water in the human body? a. Between 70-90% of the human body is water. b. Interstitial fluid and plasma are two subsets of extracellular fluid. c. The balance between intracellular and extracellular water is critical for survival. d. Water found between the cells is called intracellular water. TRUE or FALSE Without hydrogen bonds, water on earth would have been turned to steam at -91°C. If I told you that there were 42 L of water in the average human body and that 2/3 of it was intracellular water a. then 25% of total body water has to come from extracellular water. b. then it is correct to say that an adult blood volume is ~ 28L of fluid. c. then there is ~ 28L of intracellular water. d. this is the same as saying that there is 4.2 x 10^4 kL of water in the body. Water is an excellent ________ or medium for dissolving substances. The substances that dissolve are called the ________ and the combination of water + dissolved materials is called a ________. If I told you that glucose was a polar molecule you would expect that (choose all that are correct): a. it could also be called hydrophilic. b. it could also be called hydrophobic. c. it could be part of an aqueous solution. d. it likely dissolves in water. e. it likely does not dissolve in water. f. it would be a solute in an aqueous solution. g. it would be a solvent in an aqueous solution. h. it would not form part of an aqueous solution. TRUE or FALSE Both ionic compounds and polar molecules are more easily dissolved in water than are nonpolar molecules.
Shaiju T.
in general water makes up what percent of living organisms
Madhur L.
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