Mcb 100 exam 2 - Study guides, Class notes & Summaries

MCB 100 Exam 2

How do pseudohyphae in yeasts differ from vegetative hyphae in mold? Yeasts use pseudohyphae to invade host tissue, whereas mold use their vegetative hyphae for obtaining nutrients. Based on its Gram status, why are penicillin and other beta-lactam antibiotics effective against Streptococcus pneumoniae? Penicillin and Beta lactam antibiotics are effective against Streptococcus pneumoniae because it is a Gram positive organism and does not have a protein layer surrounding it's cell wall Choose...

During treatment of waste water to make it potable, about 90% of the microbes are removed A. by preliminary fermentation B. in the sedimentation step C. by treatment with alum D. by treatment with chlorine or ozone E. in the filtration step E. in the filtration step Which statement regarding the quality of drinking water is MOST accurate? A. Permissible levels of contaminants vary from state to state B. There are federal laws that dictate standards for drinking water quality C. Drinking water...

Operon A group of genes that are physically next to each other on the chromosome and expressed as a unit. Structural Gene A sequence of DNA that encodes the information needed to direct the synthesis of a protein Regulatory Gene A sequence of DNA encoding information needed to direct the synthesis of a protein that is involved in controlling the expression of other genes. Promoter A sequence of DNA that acts as the site where RNA polymerase binds and begins transcription. Regulatory Factor A...

What is the basis for assigning organisms into the three different domains of life (Bacteria, Archaea, and Eukarya)? A.DNA structure and location B. Presence of flagella C. Method of reproduction D.Type of staining used to see them E. rRNA gene sequences E. rRNA gene sequences The bacterial arrangement illustrated here is known as ____ A. a chain of bacilli. B. palisades. C. pleomorphic group. D. a tetrad. E. a cluster of cocci. A. a chain of bacilli. Biofilm formation begins with _______ A. c...

MCB 5205 FINAL EXAM 2 (STUDY GUIDE QUESTIONS WEEK 7-13 & *SPECIAL LECTURES) QUESTIONS WITH 100% COMPLETE ANSWERS!!

MCB 3020 UF Exam 2 Questions and Answers 100% CorrectMCB 3020 UF Exam 2 Questions and Answers 100% CorrectMCB 3020 UF Exam 2 Questions and Answers 100% CorrectMCB 3020 UF Exam 2 Questions and Answers 100% CorrectMCB 3020 UF Exam 2 Questions and Answers 100% Correct Components of the replisome are: - ANSWER - topoisomerase, single strand binding proteins, DNA polymerase III, helicase Anaerobic respiration - ANSWER - Uses electron carriers other than oxygen and yields less energy than aerobic ...

What is the current biological classification system? The "tree of life" What is the "tree of life" based on? sequence comparisons of ribosomal small subunit 16S rRNA genes Under the "tree of life," what are prokarya? bacteria and archaea What is fall under in the "tree of life"? proteobacteria What are deeply branching bacteria? prokaryotic autotrophs with rRNA sequences and growth characteristics thought to be similar to those of earliest bacteria What type of habitat do deeply b...

MCB 100 Exam 2

Which of the following is false? 1) The grouping of microorganisms in phylogenetic scheme that is based on nucleic acid sequence data is not always the same as the grouping of microorganisms in a taxonomic scheme based on morphological traits 2) The cells of prokaryotic organisms are divided into compartments by internal membranes In the most popular current phylogenetic scheme, prokaryotic organisms are divided into two domains called bacteria and archaea 3) Most if not all of the chemoautotrop...