29) The doubling time in the bacterial growth cycle is measured during: a) Prodromal period b) Log phase c) Incubation period d) Convalescence period e) none of the above 34.Singlet oxygen that can kill bacteria is produced by: a) Catalase b) Superoxide Dismutase c) Sunlight radiation d) Gamma radiation e) c & d 35) Bacteria that can grow in your refrigerator but really loves your freezer is labelled as: a) Hypothermophile b) Psychrophile c) Psycrotroph d) Thermophobe e) Archaebacteria

Strict anaerobes cannot live in the presnece of oxgyen because: a.)they have to mitochondria b.) they cannot absord nutrients from the envioment c.)they cannot make macromolcules  d.) they lack detoxifing enzymes e.) they cannot make ATP oragnisms need phosphorous to incoroprate it in their: a.) cell membrane  b.) DNA and RNA  c.) ATP d.) a and c e.) a, b, and c

1) Which of the following apply(ies) to Bacillus cereus and Bacillus anthracis? Choose all that apply: a) B. anthracis forms spores while B. cereus does not b) B. cereus is more lethal when it causes an infection c) B. anthracis has extra-chromosomal DNA that makes it more pathogenic d) Despite their similar names, the two are actually not at all related e) The 16S rRNA gene sequences of these bacteria are more than 99% identical, meaning that they are actually members of the same species

In E. coli, the passage of traits from parent to daughter cell occurs via A) transformation B) O integration of a plasmid into the host chromosome C) binary fission D) O horizontal gene transfer E) O Two of the above

Penicillin:

35) Researchers have found a new type of bacteria, and they want to determine its phylum. What would be the most reliable method to do so? A) Conducting a Gram-stain test B) Performing an analysis of metabolic pathways C) Determining the ribosomal RNA sequence of the bacteria D) Analyzing the morphological characteristics of the bacteria

Your microorganism produce black color in peptone iron agar grown at 37 degrees Celcius overnight.Which enzyme would you predict the this microorganism has ? a)tryotophanase b)gelatinase c)desulfhydrase d)urease e)Cytochrome C

USE NO. 1 PENCIL ONLY IMPORTANT Match the term below with the statement that best describes it: A) Clamydia B) Mycobacterium spp. C) Escherichia coli D) Firmicutes E) Clostridium G) Vibrio spp. I) Spirochetes K) Bacillus F) MRSA H) Rickettsiales J) Mycoplasma L) Cyanobacteria Genus within the Actinobacteria that includes the causal agents of leprosy and tuberculosis and is characterized by the presence of cell walls with mycolic acid. A group of bacteria that undergo oxygenic photosynthesis Genus of Tenericutes bacteria characterized by the absence of a cell wall A member of the Gamma-proteobacteria characterized by short rods which are commonly found in human gut microbiota Genus of Gamma-proteobacteria characterized by curved rods and containing both human pathogens and bioluminescent species An order within the class Alpha-proteobacteria that are often intracellular parasites such as the causative agent of Rocky Mountain spotted fever A genus of rod shaped endospore producing…

Microaerophiles A) O do not require oxygen for growth B) O are the same as facultative anaerobes C) O have the same oxygen reguirements as aerotolerant anaerobes D) O completely lack enzymes protecting them from the damaging effects of oxygen. E O None of the above are correct

14) A streptobacillus shaped bacteria have the following shape/sructure: a) long chain of capsule/rodshaped cells b) long chain of spherical-shaped cells c) a single spherical-shaped cell d) a single capsule/rod-shaped cell e) none of the above.15) If you are a passenger on the “Magic School Bus” and you want to “explore” the cytoplasmic component of a Gram -ve bacteria, you will have to go through: a) two membranes separated by periplasm and thick peptidoglycan region b) two membranes separated by periplasm and thin peptidoglycan region c) A glycocalyx and a membrane separated by a thin peptidoglycan region d) a thin peptidoglycan region & one membrane e) a thick peptidoglycan region & one membrane 16) If you are a passenger on the “Magic School Bus” and you want to “explore” the cytoplasmic component of a Gram +ve bacteria, you will have to go through: a) two membranes separated by periplasm and thick peptidoglycan region b) two membranes separated by periplasm and thin…