suppose you need to build a raft to cross a fast-moving river. Describe the physical and chemical properties of the raft that would be important to ensure your safety.

Q: Views about biological macromolecules

A: Biological molecules or also biomolecules are the molecule that play essential role in Metabolic…

Q: Using an example of your choice of buffer, explain how a buffer absorbs added acids and bases. Use…

A: Introduction Buffer solutions maintain their pH constant even upon the addition of small amounts of…

Q: A molecule with the chemical formula C6H12O6 is probably a

A: Carbohydrates: - they are molecules made up of carbon, hydrogen, and oxygen atoms, usually in a…

Q: answer the question. The bombardier beetle is spraying a boiling hot liquid that contains irritating…

A: Introduction: Beetle is considered to be the gardener's friend and it is a fearsome predator as it…

Q: Compare and contrast the structures of a steroid, a phospholipid, and a wax.

A: Lipids are important to our body as they store energy, as well as they are required for cellular…

Q: Explain how the electron configuration of an atom influences its chemical behavior and explain why…

A: Atoms consist of nucleus, which contains protons and neutrons, and electrons. These electrons are…

Q: Water is a mineral

A: Water is not a mineral since it lacks crystalline form and is a liquid rather than a solid.

Q: Reactants A and B form product C. Draw a road map and write a Plan to find the mass (g) of C when 25…

A: A balanced chemical reaction reveals quantitative information of the reactants and products based on…

Q: Choose the element Calcium (Ca) from the periodic table that is found in the human body, and write…

A: In the periodic table, one of the alkaline-earth metals of group IIa is found to be calcium. This…

Q: A student is studying calcium, a highly reactive element that humans need for strong bones. Which…

A: Chemical reactivity is the tendency of an element to undergo chemical reaction.

Q: Explain how electronegativity applies in a water molecule

A: Water (H2O) is polar because of the bent shape of the molecule. The electronegativity value of…

Q: Name and describe the four weak chemical interaction that occurs in biomolecules.

A: Biomolecules are organic compounds that are required for the maintenance and metabolism of live…

Q: Amino acids form peptide bonds through dehydration. Explain the role of water in this process by…

A: Aminoacid can be polymerised to form the chains . This process can be represented as the…

Q: Which is not a property of water? a. Low specific heat b. Hydrogen bonds form a lattice c.…

A: Water is a tasteless, colorless, odorless liquid, made up of two atoms of Hydrogen and one atom of…

Q: Lipids are polymer macromolecules.

A: Lipids are not true polymers.

Q: Chemical reactions that build polymers from _________ are called _________ reactions because they…

A: Polymers are large compounds which are made up of smaller compounds known as monomers. These…

Q: A chemical reaction that joins two organic molecules into a larger one and produces water as a…

A: In a chemical reaction, when two smaller molecules joins up to form a rather bigger molecule is…

Q: Which of the following happens in all chemical reactions (involving molecules) in all living…

A: Energy can be in any forms. Energy  has the ability to work. It can be converted into any forms.

Q: Molecules that absorb electromagnetic energy have structural components called _____________.

A: Electromagnetic radiation or energy refers to the waves of the electromagnetic field propagating…

Q: Predict whether a triglyceride from beef fat or a triglyceride from olive oil will have a higher…

A: triglycerides are type of fat (lipids) found in blood which is an ester obtained from glycerol and…

Q: Describe the chemistry of carbon and the difference betweeninorganic and organic compounds.

A: The atomic number of carbon is 6. Its electronic configuration if 2,4. Its valency is + 4.

Q: The plant dye Henna imparts orangered colour to skin and hairs due to its reaction with which of the…

A: Henna is a hair dye that is obtained from plants and it is used to color the hairs.

Q: Chemistry Most swimming pool experts recommend a pH of between 7.0 and 7.6 for water in a swimming…

A: pH is the quantitative measure of the strength of the acidity of the solution by measuring the…

Q: Explain how the chemical properties of water make life possible.

A: Water(H2O) is the most essential molecule for all living organisms. The oxygen atom is linked by two…

Q: Name and describe two properties of water that make it unique and required for life on earth.

A: The Earth is covered with 78% water. It is the most abundant substance on Earth. The first life…

Q: If 65 percent of your body mass is water, determine how many kilograms of water you contain.

A: Water is the main component of the human body and it forms nearly 60% of body mass. Different organs…

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: Choose an element from the periodic table that is found in the human body, and write five sentences…

A: All the living organisms are composed of mainly CHON. P and S are second most important elements.…

Q: Using the materials commonly found in a kitchen, explain how todistinguish between a protein and a…

A: Proteins are molecules that are made of units of amino acids. They are vital in carrying out many…

Q: Classify a molecule as organic or inorganic when given a molecular formula

A: The molecular formula of a compound signifies the actual number and type of atoms present in a…

Q: Compare and contrast the entropy changes of the dissolution of the following two amino acids…

A: The dissolution of a solute in a solvent tends to increase the entropy due to the distribution of…

Q: If water molecules are like magnets, why do you think frozen water molecules don't pull toward each…

A: A water molecule consists of two hydrogen atoms bonded to an oxygen atom,and its overall structure…

Q: When farmers learn that an overnight freeze is expected, they spray their crops with water to…

A: Temperatures plummets down in winter and freeze can occur and the clear skies and falling afternoon…

Q: true or false The bonds linking bases and sugars are covalent.

A: Nucleosides are glycosamines. They are composed of a nitrogenous base and a sugar molecule.  The…

Q: `N*

A: The plasma membrane is a lipid bilayer structure that encloses the content of the cell of the…

Q: Explain why oil does not dissolve in water ?

A: Introduction  Water is a gaseous, liquid, or solid material that is made up of the chemical elements…

Q: Is it possible to write the chemical formula of some substances in food label? Name some medicines…

A: Food labels The information given by the manufacturer on the packaging of any food item is called a…

Q: has the higher melting point and explain why.   Palmitic acid or stearic acid Arachidonic acid or…

A: Melting point of fatty acids depend on the degree of saturation and chain length. Saturated fatty…

Q: what is a chemical compound

A: Chemicals are found everywhere in the universe. It also makes up biological molecules. These…

Q: A polymer made of 24 monomers would have lost ______________ molecules of ________.

A: The examples of polymers in biological system are the proteins, polysaccharides etc. They are made…

Q: Compare and contrast functional groups

A: INTRODUCTION Functional groups include: hydroxyl, methyl, carbonyl, carboxyl, amino, phosphate, and…

Q: Design an experiment to show how you can use Benedict's solution to quantify the presence of a…

A: The application of scientific and technical principles to the processing of the material by agents…

Q: are triglycerides b uilding blocks for short term energy

A: Triglycerides are the building blocks of lipids or fats.

Q: the structure of a soap molecule, use the concept of intermolecular forces to explain why we use…

A: Soap molecules has hydrophilic head and a hydrophobic tail, they are composed of long chains of…

Q: Meat and potatoes. Compare the structures of glycogen and starch

A: Carbohydrates are the sugars that contain carbon, hydrogen, and oxygen in a ratio of 1:2:1, and…

Q: List four kinds of interactions and bonding in biological molecules

A: For the growth and development of living organisms biomolecules are needed in large amounts.…

Q: Substances that cannot be broken down or transformed chemically into other substances are called…

A: Everything around us is made up of matter. The matter is composed of different substances that…

Spheres of physical activity

The spheres of physical activity experience include aspects of everyday life where physical activity is important. In general, the spheres recognize various purposes of physical activity in different contexts. The spheres of physical activity provide a broad basis for assessing the significance and prevalence of physical activity. There are seven spheres of physical activity experience.