Question

99. Whic h answer choice INCORRECTLY labels the figure below? a. D indicates the CO: entering the cell. b. C points to GABA. c. A marks the GABA/glutamate antiporter d. D is the label for H. entering the cell. e. B points to glutamate. 100. Which probing technique detects DNA immobilized on a membrane using labeled DNA fragments? a. b. c. d. e. northern blot southern blot western blot polyacrylamide gel electrophoresis in SDS isoelectrofocusing 101. The purpose of a DNA protection assay is to determine what nucleotide sequences directly interact with which macromolecules? a. DNA-binding proteins b. rRNA c. endonucleases d. exonucleases e. tRNA 102. Genes coding for insecticidal peptides have been engineered into the genomes of some crops. Which of these peptides are naturally produced by the bacterium? a. Bacillus thuringiensis b. Agrobacterium tumefaciens c. Anabaena variabilis d. Erwinia carotovora e. Escherichia coli 17 103. The role of kill switches in genetically engineered microorganisms e they have fulfilled a. serve as a fail-safe mechanism to timely kill the organisms after they have fulfilled their purpose induce proliferation of reproduction to kill a bost cell. destroy organisms that have a risk of biological contamination or invasion. b. c. d. block the translation of CedB elimiate toxins within the cell. e. _104. Approximately what percentage of the genome of E. coli 0157:H7, which has been responsible for several outbreaks of food-borne disease, has been acquired from other species? a. 5 b. 10 c. 25 d. 40 e, 50 Answer the following questions by marking Ab, or C according to the following: a. A ifmore than.. g- h. d. Energy obtained from REDOx Number of aminoacids VS codons 105. reactions between 02 and glucose VS CO2 and H2 106. is in the presence of a chemorepellent VSa chemoatractant 108. Number of AG versus TC 109. Amount of nutrients in oligotrophic lakes VS eutrophic lake 110. Size 111. Energy (ATP) given by a respiration VERSUS fermentation 112. Energy obtained from REDOX reactions between 02 and Glucose VS NO3 and Glucose of antennae apparatus of photosynthetic microbes at surface VS microbes bellow 100 m in the ocear --113. molecules of ATP released from EMP versus ED Pathway 114. molecules of ATP released from PPP versus ED Pathway 18

Answer 1

ANSWER :

99) The point D is incorrectly labelled with its function that CO2 entering the cell while D label is correctly represents H+ entering the cell.

100) Southern blotting is the technique of detection specific DNA sequences in the DNA sample. In this method DNA fragments separate with electrophoresis and transferred to filter membrane then subsequently detect with probe hybridization.

101) The purpose of a DNA protection assay is to determine specific nucleotide sequence that directly interact with DNA-binding protein.

102) Some specific genes (cry gene ) used in genetic engineering to modify the genome of crop plants that produce toxic peptides in them which provide resistance against some insects. These peptides are naturally present in Bacillus thuringiensis bacteria.