Biological Chemistry Questions
Explore questions in the Biological Chemistry category that you can ask Spark.E!
If a substance has a pH greater than 7, it isa) neutral.b) acidic.c) alkaline.d) a buffer.
A dust particle floating on a water surface illustratesa) surface tension.b) chemical tension.c) static electricity.d) heat capacity.
A nucleotide consists ofa) a five-carbon sugar and phosphate group.b) a five-carbon sugar and a nitrogenous base.c) a phosphate group and a nitrogenous base.d) a five-carbon sugar, a nitrogenous base, and a phosphate group.
Radioactive isotopes are:always harmful and have no diagnostic value.atoms that vary in the number of protons.often used in the diagnosis and treatment of cancer.isotopes that always emit highly penetrating positive particles.
________ releases hydrogen ions and a(n) ________ accepts hydrogen ions.a) acid; baseb) base; acidc) compound; elementd) element; compound
A molecule with a long hydrocarbon chain and a carboxyl group at the end is a(an):amino acid.fatty acid.alcohol.polysaccharide.
Choose the answer below which is not true about oxidation:Oxidation is a mechanism for energy production in the body.When oxidation occurs, the substance that is reduced may be oxygen or another nonmetal.Oxidation is the loss of one or more electrons from an atom during a chemical reaction.Oxidation is the gain of electrons by an atom during a chemical reaction.
Elements that have atoms with full outer shells of electronsa) will form many compounds.b) will normally form anions.c) will normally form cations.d) frequently form hydrogen bonds.e) are inert gases.
A polysaccharide that is formed in liver and muscle cells to store glucose isa) lactose.b) cellulose.c) glycogen.d) sucrose.e) fructose.
The molecule H2 is known asa) hydrohydrogen.b) hydrogen.c) hydroxide.d) helium.
If an isotope of oxygen has 8 protons, 10 neutrons, and 8 electrons, its mass number isa) 26b) 16c) 18d) 8e) 12
Which of the following is/are needed to form a triglyceride molecule?a) 3 glycerol moleculesb) 1 glycerol moleculec) 3 fatty acid moleculesd) 3 glycerol + 3 fatty acid moleculese) 1 glycerol + 3 fatty acid molecules
Magnesium atoms have two electrons in the outermost shell. As a result, you would expect magnesium to form ions with a charge ofa) +1.b) +2.c) -1.d) -2.e) either +2 or -2
Which of the following is not a cation?a) Na+b) Cl-c) K+d) Ca2+e) Mg2+
if one pair of electrons is unequally shared between two atoms, a(n) ________ occurs.a) ionic bondb) nonpolar covalent bondc) hydrogen bondd) polar covalent bond
The reaction A + B + energy → AB is an example of a(n)a) exergonic reaction.b) endergonic reaction.c) equilibrium reaction.d) decomposition reaction.e) exchange reaction.
Identify the product formed from the addition of a phosphate group to ADP.a) adenosine diphosphateb) adeninec) adenosine triphosphated) deoxyribonucleic acide) ribose
In a molecule of oxygen, two pairs of electrons are shared equally by two oxygen atoms. The type of bond that is formed is an example of a(n)a) hydrogen bond.b) nonpolar covalent bond.c) polar covalent bond.d) ionic bond.
An example of an inorganic substance is (are)a) fructose.b) water.c) glycerol.d) amino acid.
The nucleus of an atom consists ofa) electrons.b) protons.c) neutrons.d) protons + neutrons.e) protons + electrons.