BIO1130 Midterm2B_11_ans - BIO1130 Midterm Examination –...

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Unformatted text preview: BIO1130 Midterm Examination – November 12, 2011 STUDENT NUMBER:_______________________________ Don’t enter your name. BIO 1130 An Introduction to Organismal Biology Midterm examination Worth either 15% or 20% of your final grade Total points for both parts of the exam is 80 pts Saturday, November 12, 2011 Part B: Written questions a) Place your name and student number in the space provided below. Be sure that your student number is on the top of each of the following pages – the exam will be separated. ONLY place your student number on the pages where indicated b) Answer all questions in the space provided on the exam. Do not transfer answers to the back of the page. c) You may use either pencil of ink for your answers. d) Answers as written paragraphs are preferred but point form is acceptable as long as the points are logically organized and not random statements or facts e) This is not an open book exam. f) There are five pages including this one in part B of the exam, be sure you have all five pages. g) Enter the multiple choice exam code in the space provided Name: __________________________________________ Student number: __________________________________ Multiple Choice Exam Code (MM or FF): _____________ .. Page 1 of 5 BIO1130 Midterm Examination – November 12, 2011 STUDENT NUMBER:_______________________________ Don’t enter your name. 12 pts Part 1. Briefly explain what each of the following terms means or the biological contribution made by the person. Where possible include an example in your explanation from a group or an organism to which the term or name applies. Secondary endosymbiotic theory {Explanation results in plastids/chloroplasts}{One of a number of ways plastids arose not the original way which involved a bacteria /not original way plastids arose involves a non-photosynthetic eukaryote engulphing photosynthetic eukaryote} {Result plastid/chloroplast with a quadruple membrane (also accept triple) with inner membrane bacterial like and surrounding ones all eukaryote like} Sporophyte {Part of the alternation of generation life cycle or plant/algae life cycle}{Produces spores/grows from zygote }{Is diploid organism with multiple cells some of which will produce spores after meiosis } Trophozoite {part of the malaria/plasmodium life cycle/not virus – if stated as virus don’t award point}{Formed when merozoite from blood invades cell and turns into trophozoite/trophozoite will turn into merozoite when released from blood cell}{Found in the red blood cells of the human host – must state the location in the human host since the parasite can exist in the liver, blood or inside the RBCs}{Stage that increases numbers of parasites/ release causes fevers and chills associated with the disease} Spiral cleavage {8 cell stage, the division of the four, the third cell divisions of the embryo/Division through the center/equator of the 4 cells}{results in four cells sitting in the groove/notch between four underneath – watch this may be shown with a drawing and that can also generate the mark}{Characteristic of the protostomia} Page 2 of 5 BIO1130 Midterm Examination – November 12, 2011 STUDENT NUMBER:_______________________________ Don’t enter your name. 26 pts Part 2: Fill in the missing word, or provide the one word answer in the space provided at the end of the sentence. If the line is missing, add it to the end of the line. 2.1 In the plant-like life cycle with alternation of generation what type of cell division results in Mitosis the production of gametes? __________________________ 2.2 Individually each tube foot is this type of skeleton; it's important for understanding how Hydrostatic echinoderms move. __________________________ 2.3 Although it's not a tissue, because sponges don't have them, the cells lining the spongocoel are Coanoderm collectively called this. __________________________ Evolving 2.4 The only criteria of life that viruses meet. __________________________ Hermaphrodite 2.5 Animals with both male and female reproductive tracts. __________________________ Oxidized 2.6 Chemical state of a compound that has lost an electron. __________________________ 2.7 The number of Arthropod phyla that survive the extinction at the end of the Four Cambrian. __________________________ 2.8 Abundant bacterial cytoplasmic inclusion involved in protein Ribosomes production. __________________________ 2.9 In terms of their 'gram' designation these bacteria have the reinforcing elements of the cell Negative wall buried below an outer lipid membrane, they don't stain. __________________________ Archaea 2.10 The domain of "extreme" bacteria. __________________________ 2.11 Large brown algae, like kelp, are still not considered multicellular because there is no division of labour between the cells beyond specialized cells associated with Reproduction this activity. __________________________ 2.12 In the diplontic life cycle which type of chromosomal compliment Diploid dominates? __________________________ 2.13 In this third eon in the geological time scale single celled eukaryotes dominated the worlds Proterozoic oceans. __________________________ 2.14 In the past, these events have resulted in global declines in biodiversity, we may be in the Extinctions middle of one now. __________________________ Zygote 2.15 A more accurate and precise name for a fertilized egg. __________________________ 2.16 Number of different modified sugars that are found in Two peptidoglycan. __________________________ File/Sandpaper 2.17 The radula resembles this type of tool found in a toolbox. __________________________ Page 3 of 5 BIO1130 Midterm Examination – November 12, 2011 STUDENT NUMBER:_______________________________ Don’t enter your name. 2.18 In this stage of the viral life cycle the viral genome is combined with the Lysogenic bacterial. __________________________ 2.19 This arthropod was abundent during the Cambrian and although it survived into the Trilobite Ordovician it is now extinct. __________________________ 2.20 In the bacterial flagellum protons flow through which protein complex when then rotates Motor flagellum. __________________________ 2.21 This basic arrangement of the sugar molecules in the glycan part of the peptidoglycan Dimers molecule differs from celluose and chitin. __________________________ 2.22 The change in the number of homeotic genes as more advanced groups Increase of animals appear. __________________________ 2.23 The reinforcing material in the bacterial cell wall consists of long chains of polysaccharide and side chains made of this material. __________________________ Peptide/amino acids Choanocyte 2.24 A more accurate name for the collar cells found in sponges. __________________________ 2.25 In an echinoderm the tip of the tube foot uses this to help it attach to the Suction substrate. __________________________ 2.26 These help an earthworm anchor itself in its burrow as it Setae/setal hairs digs. __________________________ Part three of the exam is on the next page Page 4 of 5 BIO1130 Midterm Examination – November 12, 2011 STUDENT NUMBER:_______________________________ Don’t enter your name. 12 pts Part 3: Answer the following two questions in the space provided. Mesoderm and the coelom were major innovations in Animal architecture. There are two different ways that these form and these differences, in part, define the protostome and deuterostome lineages. Describe how mesoderm and the coelom form in the Deuterostomia Mesoderm formation: {Mesoderm cells form from endoderm/primitive gut/archenteron cells}{Appear as small hollow pockets or pouches of cells}This may be illustrated with a diagram but the diagram must support the two points {Cells proliferate and fill the space between the endoderm and the ectoderm. Coleom formation: {The coloem has been present from the start and it grows as the cells proliferate}{Name for this is Enterocoel}{Result is a coelom with mesoderm/muscle associated with gut and body wall/may also mention mesenteries supporting gut} In protists, molecular motors are used in locomotion. Describe how the molecular motor works in a ciliate like Paramecium. Two components: {dyenin motor fueled by ATP}{associated with a flagellum/Cilia}{that travels along microtubule filaments}{microtubule filaments arranged in (9+2 organization} During movement{Dyenin motor located on the arms interacting with adjacent} {Slides one set of tubules relative to the other to bend the flagellum} There should be nothing about proton pumps, hooks etc. – they are bacterial Page 5 of 5 ...
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