Name Printed Signature Version 1 Exam 1 Feb 4 2013 BSC 2010 Introductory Biology Part I Knowing the Vocabulary For questions 1 14 identify which word if any fits the given definition as defined by the textbook and vocabulary lists 1 New properties that arise with each step upward in the hierarchy of life owing to the arrangement and interactions of parts as complexity increases a reductionism b emergent properties c systems biology d phylogeny e none of the above 2 A form of regulation in which accumulation of an end product of a process slows the process in physiology a primary mechanism of homeostasis whereby a change in a variable triggers a response that counteracts the initial change a negative feedback b positive feedback c inductive reasoning d catalyst e none of the above 3 The capacity to cause change especially to do work to move matter against an opposing 4 An element indispensable for life but required in extremely minute amounts force a temperature b electronegativity c chemical reaction d evolution e none of the above a carbon b nitrogen c trace element d essential element e none of the above 5 The linking together of like molecules often by hydrogen bonds 6 The amount of heat that must be absorbed or lost for 1 g of a substance to change its a cohesion b polymer c adhesion d covalent e none of the above temperature by 1 C a temperature b calorie c kilocalorie d specific heat e none of the above a polypeptide b polymer c carbohydrate d protein e none of the above 7 One of several compounds that have the same molecular formula and covalent bonds between atoms but differ in the spatial arrangements of their atoms owing to the inflexibility of double bonds formerly called a geometric isomer a telomere b structural isomer c enantiomer d cis trans isomer e none of the above 8 A polymer of many amino acids linked together by peptide bonds 9 A fatty acid in which all carbons in the hydrocarbon tail are connected by single bonds thus maximizing the number of hydrogen atoms that are attached to the carbon skeleton a unsaturated fatty acid b saturated fatty acid c trans fat d linoleic acid e none of the above 10 The building block of a nucleic acid consisting of a five carbon sugar covalently bonded to a nitrogenous base and one or more phosphate groups a peptide b monosaccharide c amino acid d fatty acid e none of the above 11 A structural polysaccharide of plant cell walls consisting of glucose monomers joined by 12 The contents of the cell bounded by the plasma membrane in eukaryotes the portion glycosidic linkages a collagen b cellulose c chitin d carbohydrate e none of the above exclusive of the nucleus a vesicle b cytoplasm c organelle d plasma membrane e none of the above a ribosome b double helix c nucleus d chromatin e none of the above 13 A network of microtubules microfilaments and intermediate filaments that extend throughout the cytoplasm and serve a variety of mechanical transport and signaling functions a nucleus b endoplasmic reticulum c flagellum d cytoskeleton e none of the above 14 the complex of DNA and proteins that makes up eukaryotic chromosomes Part II Understanding the Homework 15 What of the following is NOT listed in correct order for the hierarchy of biological organization from the least to the most complex a atom organelle organism b cell organ population c organ organ system ecosystem d molecule organ cell e organelle tissue organism 16 Prokaryotic and eukaryotic cells generally have which of the following features in common a a membrane bounded nucleus b the use of DNA for storage of the genetic information c a cell wall made of cellulose d flagella or cilia that contain microtubules e linear chromosomes made of DNA and protein 17 Theoretically in order for a hypothesis to be able to be used in science which of the following must be true a It must be testable and falsifiable b It must be proven correct c It must be reproducible d It must be consistent with observations e It must be popularly accepted a carbon oxygen phosphorus hydrogen b carbon hydrogen nitrogen oxygen c carbon oxygen nitrogen calcium d carbon sodium hydrogen nitrogen e oxygen hydrogen calcium nitrogen a Van der Waals interaction b hydrogen bond c ionic bond d polar covalent bond e nonpolar covalent bond 18 Which of the following four elements make up approximately 96 of living matter 19 A carbon atom and a hydrogen atom form what type of bond in a molecule 20 How many covalent bonds does a carbon atom typically make 21 What is the hydrogen ion H concentration of a solution of pH 8 a 1 b 2 c 3 d 4 e 5 a 0 08 M b 8 M c 10 8 M d 10 6 M e 8 x 10 23 M 22 Which of the following are two functional groups that are present in the molecule shown above a phosphate and sulfhydryl b carboxyl and amino c hydroxyl and amino d hydroxyl and carbonyl e methyl and amino 23 Why are stearoids considered to be lipids a They are essential components of cell membranes b They are not soluble in water c They are made of fatty acids d They are hydrophilic compounds e They contribute to atherosclerosis 24 The flow of genetic information in a cell goes from a DNA to RNA to glucose b DNA to ribosomes to RNA c DNA to RNA to protein d DNA to lipid to protein e protein to RNA to DNA complementary strand would have the sequence a 5 ACATTAG 3 b 5 TGTAATC 3 c 5 CTAATGT 3 d 5 CUAAUGA 3 e 3 CTAAGTG 5 25 If one strand of a DNA molecule has the sequence of bases 5 GATTACA 3 the other 26 There are 20 different amino acids What makes one amino acid different from another a different side chains R groups attached to a carboxyl carbon b different structural and optical isomers c different asymmetric carbons d different side chains R groups attached to the amino groups e different side chains R groups attached to an carbon 27 Movement of vesicles within the cell depends on what cellular structures a actin filaments and motor proteins b microtubules and motor proteins c centrioles and motor proteins d actin filaments and ribosomes e actin filaments and microtubules Part III Paying Attention in Class 28 As discussed in class which length scale accurately describes the size of a molecule 29 Which of the following would be best suited for determining the shape of a molecular a 1 mm b 1 m c 1 nm d 1 pm orbital a quantum mechanics b algebra c a hypothesis d radioactive isotopes e a centrifuge 30 The ability for water to be transported from the ground to the highest parts of a tall tree is best explained by which of the
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