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- BIO 211 - Chapter 4 Study Tables Domain(s) Presence of a nucleus Location of DNA Number of organelles Cell wall material Type of cell division "S" type of ribosomes Predominant body locations Size of cell wall Unique cellular structures Name PROKARYOTES VS. EUKARYOTES Prokaryote GRAM-POSITIVE VS. GRAM-NEGATIVE BACTERIA Gram-positive Eukaryote Gram-negative C ZOOM +Identify the FALSE statement from the following, if any Group of answer choices capsule plays role in transport process capsule can retain water ; cells protected against drying/ dessication capsule presence aids bacteria to better evade host defense cells capsule functions as a passive defense barrier capsule is coded by chromosomal DNA in majority of bacteria none of the above is a false statementMatch the bacterial adaptation to its function. Fimbrae Flagella/Archaellum Capsule Pili Endospore Additional layer of protection Allows bacterial cultures to redevelop when less harsh conditions are found DNA Transfer Swimming and movement Many functions, allows bacteria to stick to surfaces & eachother
- Which of the following statement/s is/are true about gram negative bacteria Cell wall has thin peptidoglycan layer Cell wall lipid content is very low Lipopolyscharride layer is present All of the aboveWhich one of the following statements about the Gram stain is false? A-In the Gram stain, a dye called crystal violet is used to stain the cells purple. B-Gram positive cells end up being stained purple. C-Gram negative cells have thinner peptidoglycan layers than Gram positive bacteria. D-In the Gram stain, alcohol is used to kill the bacteria E-Gram negative cells end up being stained pink or red.Which of the following statement/s is/are true about gram positive bacteria Cell wall has thick peptidoglycan layer Cell wall lipid content is very low Lipopolyscharride layer is absent All of the above
- True or False Exposure of bacterial cells to antibiotics: 50s is disrupted 60s is disrupted 80s is normal sturdy cell wallCell wall Cell wall Check all that are correct about Gram stained bacteria. Gram-positive cells are stained pink/red Gram-negative cells are stained pink/red Gram-positive cells are stained purple Gram-negative cells are stained purple Gram staining is usually the first stain done to identify an unknown bacteriaWhich of the following does NOT describe a mechanism of antibiotic resistance among bacteria? enzymes to hydrolyze or chemically alter the antibiotics mutations in target molecules so that antibiotics can no longer bind efflux pumps cell wall diffusion barrier, e.g. Gram-negative outer membrane, Acid Fast cell wall of Mycobacterium O increased synthesis of porins to increase antibiotic diffusion across membranes
- What is the purpose of fixing a smear? Mark all that apply: To kill the bacteria so they aren't harmed by the staining method O To kill the bacteria to make the slide safer to handle O To attach the bacteria to the slide To break down the cell wall in order to make the cells accept stain To cause the cells to shrink and become distorted Microsoft Bing 11:30 AM do 87 F Sunny 9/14/2021A is a sticky layer of polysaccharide or protein surrounding a bacterial cell, for the purpose of adhesion to a surface or to prevent dehydration. capsule slime layer peptidoglycan layer more than one of the aboveWhich of the following statements is true of the bacteria pictured above? (Select all that apply) The bacteria are Gram positive The bacteria are Gram negative The bacterium circled is a single spirochete The bacterium circled is a single vibrio