Exam (elaborations) Biol 180

Quiz Submissions - Quiz 2 Your quiz has been submitted successfully. Question 1 When referring to pH, an example of something that is alkaline includes what? Question options: stomach acid baking soda orange juice water Hide Feedback Great job. Question 2 An atom that does not contain equal numbers of protons and electrons is referred to as what? Question options: Carbon dating Ion Bond Electron transfer Hide Feedback Great job. Question 3 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? Question options: Covalent bond Ionic bond van der Waals interactions Hydrogen bond Hide Feedback Great job. Question 4 Which is one of the most abundant natural biopolymers on Earth, only found in plants? Question options: starch glycogen cellulose chitin Hide Feedback Great job. Question 5 Which is an unprocessed or unrefined source of carbohydrates? Question options: fruit pasta noodles white bread cookies Hide Feedback Great job. Question 6 Which is more likely to dissolve in water? Question options: wax glucose olive oil fat Hide Feedback Great job. Question 7 Practically speaking, a buffer is the reason for what? Question options: Why gardens are a good hobby Why we shouldn't eat white bread Why water tastes different to each of us Why we can ingest acidic substances and not die Hide Feedback Great job. Question 8 What is the reason for chemical bonds between atoms? Question options: A vacancy in the nucleus A full outermost shell A full nucleus A vacancy in the outermost shell Hide Feedback It is the outermost shell that dictates the type of chemical bond that will form. Review chemical bonds in Chapter 2. Question 9 Which type of fatty acid is a solid at room temperature? Question options: unsaturated fatty acid polyunsaturated fatty acid monounsaturated fatty acid saturated fatty acid Hide Feedback Great. Question 10 What term describes the forelimb bones of a bird, bat, horse, whale and human? Question options: synapomorphy analogous homologous apomorphy Hide Feedback Great job. Question 11 Which assumption of cladistics is correctly stated? Question options: There are multiple universal last common ancestors (LUCA). Traits remain homologous and unchanged from one state to another. The polarity of a character state change can be determined. Speciation can produce two to four new species. Hide Feedback There are three primary assumptions of cladistics. Read more in Chapter 12. Question 12 How has molecular systematics changed the how organisms had been classified? Question options: Molecular systematics has confirmed earlier classifications. Sometimes errors are uncovered and taxa are reclassified from molecular systematics. Morphologic homology has allowed for the calibration of a molecular clock. Classification has reverted to the Linnean system based on molecular systematics. Hide Feedback Molecular systematics uses molecular information including DNA sequencing to study the relationships between organisms. Read more in Chapter 12. Question 13 Currently the diversity of all life on earth is contained in 3 domains which are: Question options: Bacteria, Animals, Plants Family, Genus, Species Archaea, Bacteria, Eukarya Phylum, Class, Order Hide Feedback Great job. Question 14 Which is the correct order of classification from largest group to smallest? Question options: Phylum, Kingdom, Domain, Class, Species, Genus, Family, Order Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species Canis, Eukarya, Chordata, Canidae, lupus, Animalia, Mammalia Species, Genus, Family, Order, Class, Phylum, Kingdom, Domain Hide Feedback Great job. Question 15 What is a diagram used to represent evolutionary relationships between taxa called? Question options: systematic phylogeny branch clade Hide Feedback Great job. Question 16 What is the scientific name of wolves in binomial nomenclature? Question options: Canidae Family Mammalia Canis lupus Wolves and Dogs Hide Feedback Great job. Question 17 What term describes the wings of insects, bats, and birds? Question options: apomorphy homologous analogous synapomorphy Hide Feedback Great job. Question 18 What is a group of closely related organisms and their common ancestor on a phylogeny? Question options: synapomorphy outgroup vertebrate clade Hide Feedback Great job. Question 19 Evolutionary change that happens on short time scales from one generation to the next within a population is called what? Question options: Convergent Evolution Natural Selection Macroevolution Coevolution Microevolution Hide Feedback Great job! Question 20 The number of domestic dog varieties on Earth today, produced through artificial selection, is an example of what kind of evolution? Question options: Microevolution Coevolution Convergent Evolution Macroevolution Natural Selection Hide Feedback Artificial selection generally functions on a shorter time scale. Review How Does Evolution Function at Different Scales in the Weekly Lecture Lesson. Question 21 Which is the sole source of novel genetic variation? Question options: mutation gene flow natural selection nonrandom mating genetic drift Hide Feedback Great job! Question 22 Which is NOT considered a component of scientific observations? Question options: Personal beliefs Generation of data Measurability Specialized tools Limitations Hide Feedback Correct! In science, observations lead to the formation of hypotheses and must adhere to specific guidelines to be scientifically credible. Question 23 Which of the following is considered a primary source of research? Question options: Magazines Books Dissertations Blogs Websites Hide Feedback Correct! Primary research is considered original works that have not been interpreted or evaluated by a second party. Question 24 Which of the following is the best scientific question for proposing a hypothesis and designing an experiment on the effect of a drug (Drug X) on decreasing blood pressure? Question options: Should we lower blood pressure? Why is Drug X important to blood pressure? Does Drug X affect blood pressure? How does Drug X affect blood pressure readings? Hide Feedback Correct! Scientific questions should be specific enough that can be measured, tested and verified. ________________________________________ Attempt Score: 60 / 72 - 83.33 % Overall Grade (highest attempt):