As water is chilled, its molecules slow their movement, and H-bonds form and hold water molecules further apart. This explains why.... a. Water is most dense just above freezing b. Ice floats c. Water molecules dissociate only a small amount d. Why living near a lake moderates temperatures on land

Q: oils generally have _____.   Select one: a. a high degree of unsaturated bonds b. long fatty acid…

A: Saturated and unsaturated fats are hydrocarbons made up of carbon and hydrogen molecules. Some…

Q: You are studying the effect of different drinks on tooth enamel. In your experiment you place pieces…

A: Different types of drinks are chosen for the experiment. Time is recorded for each drink to dissolve…

Q: On the pH scale, a substance with a pH of 2 would be considered to be _____.   Select one: a. an…

A: pH can be a quantitative degree of the acidity or basicity of watery or other liquid arrangements.…

Q: Solid particles from broken apart plant and animal cells suspended in water.  A. Jellies    B. Foam…

A: We are authorized to answer one question at a time since you have not mentioned which question you…

Q: A fishing spider walks along the surface of water to hunt for tadpoles. Which characteristic of…

A: The two emergent properties of water includes; Cohesion - it is the hydrogen bonding of water…

Q: out of proteins, lipids and carbohydrates present in a cell membrane, what is true? A. Lipids…

A: The plasma membrane is a microscopic biological membrane, made up of lipids and proteins that…

Q: Molecules in a fluid diffuse over time because A. they are pumped toward areas of higher…

A: Need to find why molecules in a fluid diffuse over time from the four given options.

Q: Part A: In this diagram, a molecule of water is________. Part B: This is an example of _______. Part…

A: Hydrolysis reactions are important in many biological processes. For example, they are used in…

Q: Which of the following statements is not true? a. Water is polar. b. Water stabilizes temperature.…

A: Importance of Water.

Q: The amount of energy needed to raise one gram of water one degree Celsius is calleda. a calorie. b.…

A: BASIC INFORMATION ABOUT ENERGY CURRENCY OF THE BODY  ATP  It stands for Adenosine Tri - phosphate.…

Q: _____________contribute hydrogen ions (H+) to a solution.a. Basesb. Isotopesc. Acidsd. Compounds

A: Answer: Introduction: According to the Lowry-Bronsted definition, an acid is a substance which is a…

Q: Most of the molecules that 'make-up' the mass of our flesh (including water) are molecules wherein…

A: Covalent bonds are bonds formed by the sharing of electrons between atoms. Formation of covalent…

Q: When hydrogen is a part of a ________, it has a slight positive charge.   a. Ionic bond   b. polar…

A: Hydrogen bears a slight positive charge and atom with which it is attached bears slight negative…

Q: Molecules that are found in living cells and contain the element___________ are considered organic…

A: Cell, in science, the essential membrane-bound unit that contains the central molecules of everyday…

Q: What is the major consequence of the H- bonding interactions among water molecules? A. Polarity of…

A: Option (e). All of these is the correct answer. Reason: There are many effects of hydrogen bonding…

Q: Which properties of water best explains why organisms resist temperature changes, although they give…

A: Water is utilized for help, temperature guideline, transport of body liquids, and response climate.…

Q: Because water has high specific heat... A. Water can change temperature more quickly than other…

A: Water is an transparent, tasteless, transparent and almost colourless substance which is the main…

Q: Explain why ice floats on liquid water. Use the term “hydrogen bonds” in your response.

A: Hydrogen bond forms by the electrostatic force of attraction between a hydrogen atom that is bound…

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A: Salt is an essential part of all foods. There are various salts now available in the market claiming…

Q: Match the terms with their descriptions

A: A cell is the structural and functional unit of life. They provide form and structure, process…

Q: Which statement helps to explain why ice is less dense than liquid water? O(a) Water molecules make…

A:

Q: Explain why a water strider insect can walk on the surface of a lake or pond. Use the terms hydrogen…

A: A water strider, commonly known as a pond skater, a water strider is an insect belonging to the…

Q: Why are phospholipids the main lipid component of membranes? A. these molecules can interact with…

A: Introduction: Phospholipids are the main component of the cell membranes. They form the lipid…

Q: 2) dehydration reaction means ? A. molecules are breaking down by adding water. B. molecules are…

A: Biological molecules are substances that are present in the body and involved in Metabolic process .…

Q: Biochemists use a modified value for standard ΔG values because A. the reagents are not one molar…

A: The concept of Gibbs free energy (ΔG) plays a vital role in understanding the thermodynamics of…

Q: what property of water helps keep body temperature stabilized?a. surface tensionb. heat capacityc.…

A: Water is made up of one molecule of oxygen covalently bonded with two molecules of hydrogen .…

Q: description Cohesion Adhesion a. Easily dissolves other polar substances b. Moderation of…

A: The amount of heat required to increase the temperature of one gram of a substance by one degree…

Q: Which of the following statements is not true?a. Water is polar.b. Water stabilizes temperature.c.…

A: Water is a colorless, tasteless, odorless chemical substance which consists of hydrogen and oxygen…

Q: What is true about lipids?  A. They are polar and therefore soluble in polar solvents B They are…

A: The four classes of biological macromolecules are nucleic acids, proteins, lipids  and…

Q: The weak attractive force between two water molecules forms a(n)a. covalent bond. c. ionic bond. e.…

A: Opposite charges attract one another. The slight positive charges on the hydrogen atoms in a water…

Q: The column of water extending in vessels from plant roots to leaves is maintained by ____.   A.…

A: The column of water extending in vessels from plant roots to leaves is maintained by cohesion…

Q: Which statement is false? A. Elements are found in compounds and molecules B. compounds are made…

A: The pure substances consisting of only atoms with the same number of protons and cannot be…

Q: A hydrophilic molecule dissolves in________________ .a. lipid but not waterb. water but not lipidc.…

A: The hydrophilic molecule is defined as the substance which shows the interactions with the water.…

Q: In the human body,the -log of the hydrogen ion concentration ([H+]) is regulated by  a. pH b.…

A: The human body naturally has the system to maintain the acidity and basicity of the cells or body…

Q: Sports beverages are a combination of fluid, carbohydrate, and? A. Diuretics B. Electrolytes C.…

A: Sports drinks, also known as isotonic beverages or fluid replacement beverages, are liquids that are…

Q: Multiple water molecules are held together by... A. Dehydration synthesis B. Covalent bonds C.…

A: Water is also known as universal solvent because of its ability to dissolve almost everything.  A…

Q: Which of the following statements below is true?

A: Rock salt is a halite which is a mineral and form of common salt called as sodium chloride. This…

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A: In an acid-base reaction, according to the acid-base theory, acid is the compound that donates the…

Q: Saturated fats have all of the following characteristicsexcept:a. they are solid at room…

A: Fats are of two types- saturated fatty acids and unsaturated fatty acids. Saturated fatty acids have…

Q: Relative tonicity compares the _____________ of two environments.  A. Solute concentration B.…

A: Tonicity is a measure of the effective osmotic pressure gradient; the water potential of two…

Q: You are stranded on a lifeboat with several other people in the middle of the ocean.  You have run…

A: The formula for solute potential is  ψs=-iCRT i is ionisation constant of NaCl = 2 C is…