Which one of the terms below is NOT a stage in the typical growth curve of a bacterial cell under ideal conditions in culture? O Exponential phase Lag phase Stationary phase Leg Phase Death Phase

What bacterial structure is present in the image below? Flagella Capsule -L Glycocalyx Endospore y

Pls can you identify this organism The first picture is gram stain negative The second pictures is endospore stain

Which of the following is not a function of the plasma membrane in bacteria: Attachment to hosts Production of energy Breakdown of nutrients Selective permiability.

Explain what is happening with this graph that charts the reactions ofa mesophilic bacterium to temperature. Blue shows the survival curveand brown the growth curve under various temperatures.

Describe why a biofilm is so resistant and able to withstand standard antibiotics.  What specifically makes a biofilm so difficult to kill? Explain the process of binary fission and how it differs from eukaryotic cell divison.

Which 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

Correct the answer

Biofilms are often formed on artificial surfaces in the human body. During medical procedures, when artificial joints, intravenous catheters, urinary catheters are placed and injections are made, commensals/mutualists may be introduced into new sites in the body and there they may form biofilms. Which statement below is NOT a reason to explain why such bacteria living in biofilms are so difficult to eliminate? O layers of biofilm prevent phagocytes from killing bacteria O layers of biofilm acts a a diffusion barrier against antibiotics O biofilm stimulates bacteria to grow continually in the log/exponential phase of growth O layers of biofilm acts a a diffusion barrier against antibodies/immunoglobulins O bacteria often in stationary phase of growth

Cells growing optimally and in their healthiest state are in the phase. O log stationary death lag