BIO 100 Quiz 1 - Questions and Answers Fire can move, grow, reproduce, use energy, consume oxygen, and interact with its environment. Why is it not
... [Show More] alive? a) It does not have cells. b) It does not pass on genes for traits to its offspring. c) It does not consist of complex, well-ordered structures. d) All of the above are correct. What is typically the first step in the scientific method? a) Hypothesis b) Prediction c) Observation d) Experiment __________ are substances that CANNOT be broken down into other substances by chemical reactions. a) Elements b) Molecules c) Compounds d) Gases The chemical name for table salt is sodium chloride, or simply NaCl. What type of chemical is NaCl? a) Ion b) Molecule c) Element d) Compound The majority of the elements essential to life are found in what part of the periodic table? a) Evenly distributed throughout the periodic table b) The top third c) The bottom third d) The middle third A college campus-including the students, birds, trees, sidewalks, and air-makes up one complete ________.
a) Organism b) Community c) Ecosystem d) Population All sodium atoms have 11 protons. The nuclei of some sodium atoms contain 12 neutrons and others contain 11. These different forms of sodium are called __________. a) Ions b) Molecules c) Isotopes d) Elements Which of the following is not made from long chains of glucose? a) Cellulose b) Glycogen c) Monosaccharides d) Starch A needle can be made to "float" on the surface tension of water. What causes this surface tension to form? a) The adhesion of water molecules to the needle b) The solubility of water c) The heat capacity of water d) The cohesion of water molecules to each other Organic molecules that end in the suffix "-ase" often function as ________ molecules. a) structural b) storage c) transport d) enzymatic A(n) _______ bond forms when one atom gives up one or more electrons to another atom. ionic Atoms or molecules with a net electric charge due to the loss or gain of one or more electrons are _______. ions A(n) ________ bond involves the sharing of electron pairs between atoms, also known as a molecular bond. Covalent When one pair of electrons is shared between two atoms, a ________ bond is formed. Single When two pairs of electrons are shared between two atoms, a ________ bond is formed. Double A _______ bond is a type of chemical bond where a pair of electrons is unequally shared between two atoms. As a result, one end of the molecule has a slightly negative charge and the other a slightly positive charge. Polar Atoms involved in a _______ bond equally share electrons; there is no charge separation to the molecule. Nonpolar A weak bond called a _______ bond results from an attraction between a slightly positive region in a molecule and a slightly negative region in the same or a different molecule. Hydrogen What is the maximum number of single covalent bonds a carbon atom can form with other elements? a) 1 b) 2 c) 3 d) 4 Why is one side of a single water molecule partially negative while the other side is partially positive? a) Hydrogen donates its electrons to oxygen b) Oxygen donates its electrons to hydrogen c) Electron pairs are unevenly shared between the oxygen atom and the two hydrogen atoms d) Electron pairs are unevenly shared between the two hydrogen atoms __________ bonds hold the oxygen and hydrogen atoms in a molecule of water together. a) Ionic b) Hydrogen [Show Less]