Gram positive bacteria staincrystal violet stain blue

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Unformatted text preview: points. Gram positive bacteria {Stain/crystal violet stain /blue-violet colour colour}{Stain stains peptidoglycan layer in the cell wall}{Peptidoglycan layer is outermost/exposed and this is why it stains} Medusa {Stage in the life cycle of Cnidaria}{swimming/mobile form}{Tentacles surround the mouth located underneath the bell/facing down} Stabilizing selection {when individuals with intermediate traits or selected for – have maximal fitness/When the extremes of the population are selected against – have lowest fitness}{Mean or average value is retained – curve narrows (NB if there is a diagram be sure the diagram is properly explained}{example: human birth weight/golden rod gall size} Page 2 of 5 BIO1130 Midterm Examination – November 13, 2010 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. DNA 2.1 Mitochondria and chloroplasts have their own _______________, suggesting they were once independent organisms. Peptidoglycan 2.2 This reinforcing biopolymer is unique to bacterial cells walls. ________________________ Uracil 2.3 This nucleotide replace thymine in RNA. ________________________ 2.4 These water filled membranous sacs are only found in plant Vacuoles cells. ________________________ 2.5 These shales are famous for the fossilization of soft-bodied Cambrian Burgess animals. ________________________ Homeotic or Hox 2.6 These genes control pattern in multicellular organisms. ________________________ 2.7 These fragments have to be stitched together to complete DNA Okazaki replication. ________________________ Anticodon 2.8 The opposite of the codon. ________________________ 2.9 Type of mutation where a single nucleotide changes alters only one Missense codon. ________________________ 2.10 The membrane system of the nucleus is only one part of this larger membrane system in Endomembr...
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