8. Of the following the best antiseptic is a.90% methyl alcohol b. bleach c. 90%

Question

8. Of the following the best antiseptic is a.90% methyl alcohol b. bleach c. 90% isopropyl alcohol d. none of the above 9. During the log phase of growth a. bacteria are not multiplying b. bacteria are dying, resting and multiplying c. bacteria are just multiplying but slower than in log phase. d. bacteria are multiplying rapidly 10.The following describes the Basidiomycota a. many yeasts here b. Includes Mucor c. Have zygospores d. none of the above 11 Red biotechnology can be best described as a. an old science with no real successes to date b. a new science with some successes , but great potential c. a dangerous area with little potential for helping man d. a promising area of research , with many successes already 12.The following are some importances of the blue green algae a Producers of most of the original oxygen of the atmosphere b . Fixators of most of the original nitrogen compounds c. The most success group in term of domination of the earth for longest time. d. all of the above 13.Members of the Actinobacteria include a. Actinomycetes b. Staphylococcus c. Mycobacteria d. a and c 14. Many methods have been have been used to deliver genes to foreign cells such as a. adenoviruses and HIV b. electro oration and heat shock c. transformation and electron gun d. all of the above 15.These chemicals usually enter or leave aerobic cells by simple diffusion through phospholipid bilayers a. carbon dioxide b. oxygen c. water d all of the above 16 Foraminifera can best be described as a. Saprophytic eukaryotes that can ferment when oxygen is low b. Single celled algae c. Eukaryotes with a chitinous cell walls that reproduce with sexual and asexual spores d. Protozoa with calcium carbonate shells 17Vertical gene transfer of information in bacteria can occur through a. conjugation b. transformation c. transduction d. binary fission 18.Plasmids can best described as a. amazing resistant stage that may live for millions of years b. small circular pieces of DNA separate from chromosome that have a few to a hundred genes or so c. having hundreds of genes including ,some for toxin production d. all of the above 19.Cyanobacteria a. include Anabena, are oxygenic ,photosynthetic and some are nitrogen fixers b. include Oscillatoria and have been around for at least 3.5 billion years c. often can fix atmospheric nitrogen and are also oxygenic phototrophs d. all of the above 20. With hardest to kill first, in descending sequence , the correct order would be a. Staph aureus, E. coli, cysts b. Prions , endospores, Mycobacteria, fungi c. Cysts of protozoa , prions, gram, negative bacteria d, enveloped viruses, gram negative bacteria, gram positive bacteria 8. Of the following the best antiseptic is a.90% methyl alcohol b. bleach c. 90% isopropyl alcohol d. none of the above 9. During the log phase of growth a. bacteria are not multiplying b. bacteria are dying, resting and multiplying c. bacteria are just multiplying but slower than in log phase. d. bacteria are multiplying rapidly 10.The following describes the Basidiomycota a. many yeasts here b. Includes Mucor c. Have zygospores d. none of the above 11 Red biotechnology can be best described as a. an old science with no real successes to date b. a new science with some successes , but great potential c. a dangerous area with little potential for helping man d. a promising area of research , with many successes already 12.The following are some importances of the blue green algae a Producers of most of the original oxygen of the atmosphere b . Fixators of most of the original nitrogen compounds c. The most success group in term of domination of the earth for longest time. d. all of the above 13.Members of the Actinobacteria include a. Actinomycetes b. Staphylococcus c. Mycobacteria d. a and c 14. Many methods have been have been used to deliver genes to foreign cells such as a. adenoviruses and HIV b. electro oration and heat shock c. transformation and electron gun d. all of the above 15.These chemicals usually enter or leave aerobic cells by simple diffusion through phospholipid bilayers a. carbon dioxide b. oxygen c. water d all of the above 16 Foraminifera can best be described as a. Saprophytic eukaryotes that can ferment when oxygen is low b. Single celled algae c. Eukaryotes with a chitinous cell walls that reproduce with sexual and asexual spores d. Protozoa with calcium carbonate shells 17Vertical gene transfer of information in bacteria can occur through a. conjugation b. transformation c. transduction d. binary fission 18.Plasmids can best described as a. amazing resistant stage that may live for millions of years b. small circular pieces of DNA separate from chromosome that have a few to a hundred genes or so c. having hundreds of genes including ,some for toxin production d. all of the above 19.Cyanobacteria a. include Anabena, are oxygenic ,photosynthetic and some are nitrogen fixers b. include Oscillatoria and have been around for at least 3.5 billion years c. often can fix atmospheric nitrogen and are also oxygenic phototrophs d. all of the above 20. With hardest to kill first, in descending sequence , the correct order would be a. Staph aureus, E. coli, cysts b. Prions , endospores, Mycobacteria, fungi c. Cysts of protozoa , prions, gram, negative bacteria d, enveloped viruses, gram negative bacteria, gram positive bacteria 8. Of the following the best antiseptic is a.90% methyl alcohol b. bleach c. 90% isopropyl alcohol d. none of the above 9. During the log phase of growth a. bacteria are not multiplying b. bacteria are dying, resting and multiplying c. bacteria are just multiplying but slower than in log phase. d. bacteria are multiplying rapidly 10.The following describes the Basidiomycota a. many yeasts here b. Includes Mucor c. Have zygospores d. none of the above 11 Red biotechnology can be best described as a. an old science with no real successes to date b. a new science with some successes , but great potential c. a dangerous area with little potential for helping man d. a promising area of research , with many successes already 12.The following are some importances of the blue green algae a Producers of most of the original oxygen of the atmosphere b . Fixators of most of the original nitrogen compounds c. The most success group in term of domination of the earth for longest time. d. all of the above 13.Members of the Actinobacteria include a. Actinomycetes b. Staphylococcus c. Mycobacteria d. a and c 14. Many methods have been have been used to deliver genes to foreign cells such as a. adenoviruses and HIV b. electro oration and heat shock c. transformation and electron gun d. all of the above 15.These chemicals usually enter or leave aerobic cells by simple diffusion through phospholipid bilayers a. carbon dioxide b. oxygen c. water d all of the above 16 Foraminifera can best be described as a. Saprophytic eukaryotes that can ferment when oxygen is low b. Single celled algae c. Eukaryotes with a chitinous cell walls that reproduce with sexual and asexual spores d. Protozoa with calcium carbonate shells 17Vertical gene transfer of information in bacteria can occur through a. conjugation b. transformation c. transduction d. binary fission 18.Plasmids can best described as a. amazing resistant stage that may live for millions of years b. small circular pieces of DNA separate from chromosome that have a few to a hundred genes or so c. having hundreds of genes including ,some for toxin production d. all of the above 19.Cyanobacteria a. include Anabena, are oxygenic ,photosynthetic and some are nitrogen fixers b. include Oscillatoria and have been around for at least 3.5 billion years c. often can fix atmospheric nitrogen and are also oxygenic phototrophs d. all of the above 20. With hardest to kill first, in descending sequence , the correct order would be a. Staph aureus, E. coli, cysts b. Prions , endospores, Mycobacteria, fungi c. Cysts of protozoa , prions, gram, negative bacteria d, enveloped viruses, gram negative bacteria, gram positive bacteria

Explanation / Answer

8. d (none of these) None of these is a good antiseptic, they would be better to be used as disinfectants. Antiseptics are applied to the body, and isopropyl alcohol, bleach, methyl alcohol can provide harm to the skin. Methyl alcohol may be toxic if inhaled, so, applying it on skin might be dangerous. Bleach may cause skin irritation. Propyl alcohol takes a lot of time for it's action. So, none of them will be a good antiseptic.

9. d (multiplying rapidly at a rate of 2n)

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