SCIN130 Quiz 2 Answers 100% correct

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Part 1 of 7 - Chapter 2 27.0 Points Question 1 of 31 3.0 Points What is the capacity of a substance to withstand rupture when placed under tension or stress?  A. cohesion  B. adhesion �... � C. surfact tension  D. covalent bond  E. solvent Feedback: Water molecules are attracted to each other because of hydrogen bonding by cohesion – and this gives rise to surface tension. Review water in Chapter 2. Question 2 of 31 3.0 Points Which is an example of an isotope? .  A. Hydrogen-1  B. Actinides  C. Halogens  D. Carbon-12 Feedback: Great job. Question 3 of 31 3.0 Points If an atom donates an electron, and becomes positive, another atom will accept the electron, and is negative. What is the bond these atoms will form called?  A. Covalent bond  B. Ionic bond  C. van der Waals interactions  D. Hydrogen bond Feedback: Great job. Question 4 of 31 3.0 Points At the most fundamental level, what is life made up of?  A. matter  B. atom  C. neutron  D. isotope Feedback: All matter is composed of elements, and all elements are made of atoms; but matter occupies spaces and has mass. Review the building blocks of molecules in Chapter 2. Question 5 of 31 3.0 Points What is the reason for chemical bonds between atoms?  A. A vacancy in the outermost shell  B. A full outermost shell  C. A vacancy in the nucleus  D. A full nucleus Feedback: Great job. Question 6 of 31 3.0 Points Which is one of the most abundant natural biopolymers on Earth, only found in plants?  A. cellulose  B. chitin  C. starch  D. glycogen Feedback: The cellulose found in plant walls is one of the most abundant natural biopolymers. Review carbohydrates in Chapter 2. Question 7 of 31 3.0 Points Which type of fatty acid is a solid at room temperature?  A. polyunsaturated fatty acid  B. unsaturated fatty acid  C. monounsaturated fatty acid  D. saturated fatty acid Feedback: Great. Question 8 of 31 3.0 Points In most living species, which monosaccharide is the most important source of energy?  A. glucose  B. starch  C. cellulose  D. fructose Feedback: Great job. Question 9 of 31 3.0 Points Proteins include all of the following except what?  A. water  B. phospholipids  C. DNA  D. hormones Feedback: Proteins are one of the most abundant organic molecules, and do not include lipids. Review proteins in Chapter 2. Part 2 of 7 - Chapter 12 27.0 Points Question 10 of 31 3.0 Points Currently the diversity of all life on earth is contained in 3 domains which are:  A. Phylum, Class, Order  B. Archaea, Bacteria, Eukarya  C. Family, Genus, Species  D. Bacteria, Animals, Plants Feedback: Great job. Question 11 of 31 3.0 Points What is the scientific name of wolves in binomial nomenclature?  A. Canis lupus  B. Canidae Family  C. Wolves and Dogs  D. Mammalia Feedback: Great job. Question 12 of 31 3.0 Points How has molecular systematics changed the how organisms had been classified?  A. Sometimes errors are uncovered and taxa are reclassified from molecular systematics.  B. Morphologic homology has allowed for the calibration of a molecular clock.  C. Molecular systematics has confirmed earlier classifications.  D. Classification has reverted to the Linnean system based on molecular systematics. Feedback: Molecular systematics uses molecular information including DNA sequencing to study the relationships between organisms. Read more in Chapter 12. Question 13 of 31 3.0 Points Which is the correct order of classification from largest group to smallest?  A. Species, Genus, Family, Order, Class, Phylum, Kingdom, Domain  B. Canis, Eukarya, Chordata, Canidae, lupus, Animalia, Mammalia  C. Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species  D. Phylum, Kingdom, Domain, Class, Species, Genus, Family, Order Feedback: The species name is the most specific grouping and domain the broadest. Read more about each level of classification in Chapter 12. Question 14 of 31 3.0 Points Which best describes the assumption maximum parsimony is built on?  A. Evolutionary events occurred in the simplest, most obvious way.  B. Shared derived characteristics define monophyletic groups.  C. Molecular data is superior to morphological data when reconstructing evolutionary events.  D. All of life evolves as a goal driven process under the direction of a higher power. Feedback: Maximum parsimony is often described as the hypothesis that has the fewest evolutionary changes. Read more in Chapter 12. Question 15 of 31 3.0 Points Which assumption of cladistics is correctly stated?  A. There are multiple universal last common ancestors (LUCA).  B. The polarity of a character state change can be determined.  C. Traits remain homologous and unchanged from one state to another.  D. Speciation can produce two to four new species. Feedback: There are three primary assumptions of cladistics. Read more in Chapter 12. Question 16 of 31 3.0 Points What is a diagram used to represent evolutionary relationships between taxa called?  A. clade  B. branch  C. phylogeny  D. systematic Feedback: Great job. Question 17 of 31 3.0 Points What term describes the wings of insects, bats, and birds?  A. synapomorphy  B. analogous  C. homologous  D. apomorphy Feedback: Great job. Question 18 of 31 3.0 Points What term describes the forelimb bones of a bird, bat, horse, whale and human?  A. apomorphy  B. homologous  C. synapomorphy  D. analogous Feedback: Great job. Part 3 of 7 - Lecture Material 9.0 Points Question 19 of 31 3.0 Points Evolutionary change that happens on short time scales from one generation to the next within a population is called what?  A. Convergent Evolution  B. Coevolution  C. Macroevolution  D. Microevolution  E. Natural Selection Feedback: Great job! Question 20 of 31 3.0 Points Which is the only evolutionary process that results in adaptation?  A. Allele Frequency  B. Artificial Selection  C. Natural Selection  D. Reproductive Isolation  E. Genetic Drift Feedback: Great job! Question 21 of 31 3.0 Points What is the term for microevolutionary changes that accumulate over a long time period resulting in different species and significant variation among living organisms?  A. Microevolution  B. Natural Selection  C. Convergent Evolution [Show More]

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