MICRO 3050 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A++

MICRO 3050 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A++ Leave the first rating Terms in this set (134) 4 Cellular microorganisms types fungi, protists, bacteria, archaea What is horizontal gene transfer transfer of genes between cells of the same generation What are the benefits to a smaller surface area? (smaller bacteria) Doesnt splice higher absorption rate moves easier lower waste expulsion easier to divide (mutations = evolution) What is vertical gene transfer flow of genetic information from one generation to the next (mother-daughter) diplococci pairs of cocci streptocci chains staphlococci grape cluster tetrads 4 cocci in a square sarcinae cubic configuration of 8 cocci coccobacili very short rods vibrios comma shaped Sprillia spiral shaped (ridged helices) spirochetes flexible helices spiral 3 domains of microbial cells -Bacteria (pro) -Archea (pro) -Eukarya (euk) T/F Are Archaea and Bacteria Haploid cells T 3 ways to horizontal transfer - DNA from environment -congregation ("sexual" reproduction for bacteria) -transduction (DNA moves via virus) Which of the following has peptidoglycan in the call wall (a) Bacteria (b) Eukarya (c) Archaea Bacteria Which of the following are most closely related based on the Universal Phylogenetic tree? (a) Bacteria and Archaea (b) Eukarya and Bacteria (c) Eukarya and Archaea c- Eukarya and Archaea According to the endosymbiotic theory, which developed first? (a) mitochondria (b) chloroplast (a) Mitochondria T/F Bacteria and Archaea don't reproduce sexually T Since prokaryotic cells , they have the ability to adapt faster to changing environment conditions than eukaryotic cells do. have a larger surface area to volume ratio Which statements about the relationship between microbes and humans is FALSE? (a) certain livestock rely on microbial action for survival (b) most microbes are pathogenic (c) certain microbes are used to make life-saving medicines (d) The human microflora can positively contribute to the health of the host (B) Most microbes are pathogenic is FALSE A bacterial strain is: a subset of a bacterial species According to evidence of early life: (a) microbial and plant life appeared at the same time (b) green algae were the first microbes to produce O2 (c) approx. 20% of life's history was dominated by microbes (d) the first microbes to use light energy did NOT produce O2 d) the first microbes to use light energy did NOT produce O2