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Biological Chemistry
Explore questions in the Biological Chemistry category that you can ask Spark.E!
- In a chemical reaction, enzymes control:the speed of the reaction.the nature of the end products.the temperature of the reaction.the pH of the reaction.
- The nucleus of an atom consists ofa) electrons.b) protons.c) neutrons.d) protons + neutrons.e) protons + electrons.
- In hydrolysis reactions, compounds react witha) hydrogen, causing decomposition.b) glucose, causing decomposition.c) water, causing decomposition.d) carbon, causing decomposition.
- When placed in water, an inorganic compound dissociates 99 percent, forming hydrogen ions and anions that are not OH-. This compound would bea) a strong base.b) a weak base.c) a strong acid.d) a weak acid.e) a salt.
- Interaction between two or more polypeptide chains to form a protein complex is __ structure.a) primaryb) secondaryc) tertiaryd) quaternary
- You would expect a peptide bond to linka) two simple sugars.b) two amino acids.c) two nucleotides.d) a sugar and a peptide.e) a peptide and a fatty acid.
- Lipidsa) form essential structural components of cells.b) provide roughly twice the energy as carbohydrates.c) help insulate the body.d) cushion organs against shocks.e) all of the above.
- An example of an inorganic substance is (are)a) fructose.b) water.c) glycerol.d) amino acid.
- The most abundant high-energy compound in cells isa) DNA.b) ADP.c) AMP.d) ATP.e) RNA.
- A side chain on an amino acid is sometimes calleda) fibrous or globularb) a polypeptide chainc) an R groupd) nucleic acid
- a chemical reaction in which a substance is broken down and water added to the broken bondsactive sitephosphorylasehydrolysisisomerase
- The group of organic compounds containing carbon, hydrogen, and oxygen in a near 1:2:1 ratio is likely aa) carbohydrate.b) lipid.c) protein.d) nucleic acid.e) cholesterol.
- A fatty acid that contains multiple double covalent bonds is said to bea) saturated.b) monounsaturated.c) polyunsaturated.d) hydrogenated.
- Compounds that are ionically bonded:share electrons.dissociate into electrolytes in water.are held together by hydrogen atoms.do not dissociate in solution.
- The sugar added to water is called the:solvent.hydrate.anhydrates.solute.
- Hydrophilic molecules readily associate witha) lipid molecules.b) hydrophobic molecules.c) water molecules.d) both lipid molecules and hydrophobic molecules.e) cholesterol.
- substrates into different structural forms without the gain or loss of atomsactive sitephosphorylasehydrolysisisomerase
- Nonpolar organic molecules are good examples ofa) electrolytes.b) molecules that will dissociate fully when placed in water.c) hydrophobic compounds.d) hydrophilic compounds.
- Substrate molecules bind to enzymes at the ________ sites.a) aminob) activec) carboxyld) neutral
- Lipids that are produced by nearly every tissue in the body and that act as local regulators of cell activities are thea) prostaglandins.b) steroids.c) monoglycerides.d) phospholipids.e) glycolipids.