What is peptidoglycan Study guides, Class notes & Summaries

Exam 1: BIOS 242 / BIOS242 Review (Latest 2024/ 2025 Update) Fundamentals of Microbiology with Lab| Questions and Verified Answers| 100% Correct| Grade A- Chamberlain Q: what are characteristics of a hyperthermophile? Answer: loves high temperature Q: where are hyperthermophiles found? Answer: volcano Q: what are characteristics of a psychrophile? Answer: survives in cold temperatures Q: where are psychrophiles found? Answer: ice caps Q: what are char...

Portage Learning BIOD 171 Microbiology Lecture Exam Key 1-6 Exams 1. What are the two major types of nucleic acids and their roles? DNA- deoxyribonucleic acid RNA- Ribonucleic acid DNA- Cellular life has DNA and a role that DNA has is long-term storage of information, it holds the characteristics of living organisms. RNA- Is the carrier of information in form of amino acid sequence. It converts the information in the DNA and synthesizes proteins Tru...

MCB 3020C Microbiology EXAM 1 Questions and Answers (Graded A)MCB 3020C Microbiology EXAM 1 Questions and Answers (Graded A)MCB 3020C Microbiology EXAM 1 Questions and Answers (Graded A)MCB 3020C Microbiology EXAM 1 Questions and Answers (Graded A)MCB 3020C Microbiology EXAM 1 Questions and Answers (Graded A)MCB 3020C Microbiology EXAM 1 Questions and Answers (Graded A) What are the two types of microbial cells? - ANSWER - Prokaryotic and eukaryotic What is the 3 domains that are based on ...

Test Bank Microbiology: An Introduction, 13th Edition Gerard J. Tortora Table of Contents: Part I: Fundamentals of Microbiology Chapter 1. The Microbial World and You Chapter 2. Chemical Principles Chapter 3. Observing Microorganisms through a Microscope Chapter 4. Functional Anatomy of Prokaryotic and Eukaryotic Cells Chapter 5. Microbial Metabolism Chapter 6. Microbial Growth Chapter 7. The Control of Microbial Growth Chapter 8. Microbial Genetics Chapter 9. Biotechnology and DNA Technology Pa...

What is meant by selective toxicity? Correct Answer-Chemotherapeutic agents should act against the pathogen and not the host. Why are chemotherapeutic agents that work on the peptidoglycan cell wall of bacteria a good choice of drug? Correct Answer-Humans and other animal hosts lack peptidoglycan cell walls. Why is polymyxin only used on the skin? Correct Answer-It can also damage living human cell membranes, but the drug is safely used on the skin, where the outer layers of cells are dead...

C453 Clinical Microbiology Study Questions With Answers (Updated 2022) A+. Describe the general characteristics of bacteria by answering the following questions. a. Are bacteria prokaryotic or eukaryotic? Why? Prokaryotic because their genetic material (DNA) is not housed within a true nucleus. b. Single-celled or multicellular? Why? Usually unicellular c. Can they be seen with the naked eye? Why? No; typically they are about 1um (need to be at least 100um to be visible without a microscope...

MCB 100 FULL Exam 1 (UIUC) Questions and Answers Graded A+ Question: What is the primary difference between prokaryotic and eukaryotic cells? Answer: Prokaryotic cells lack a true nucleus and membrane-bound organelles, while eukaryotic cells have a defined nucleus and organelles surrounded by membranes. Question: What is the role of ribosomes in bacterial cells? Answer: Ribosomes are responsible for protein synthesis, translating mRNA into polypeptide chains that fold into functional pr...

What type of antibiotic is good for bloodstream infections - bacteriostatic or bacteriocidal? - Answer- Bacteriocidal T/F? Penicillin is a broad spectrum antibiotic? - Answer- False, it is narrow spectrum What broad classes of bacteria does penicillin cover? - Answer- - Gram + - Anaerobes What are the 2 classes of cell wall synthesis inhibitors? - Answer- 1. Beta-Lactams: these bind to and blocks transpeptidase (a penicillin binding protein) and prevent formation of the cross-links in ...

Hershey and Chase performed an experiment in order to determine how bacteriophages infect bacteria. What did they find? The bacteriophage injects DNA into the host cell. This was found because, after centrifugation, the pellet was radioactive The largest difference between a Gram + and Gram - bacterial cell is: The gram + cell has a much thicker peptidoglycan layer Why does a Gram + cell stain blue/purple in a gram stain? The Gram + cell stains blue/purple because crystal violet rem...

Lack a nucleus or membrane bound organelles, usually unicellular. Smaller and simpler than most eukaryotic cells. Contain two types of domain Bacteria and Archaea. - Prokaryotic cells Ridged cell wall contains peptidoglycan. Includes a nucleoid (no nucleus) with no membrane-bound organelles. Multiply by binary fission - cell enlarges then divides - Bacteria Bacterial shapes: Coccus Rods (bacillus) Coccobacillus Vibrio Spirillum Spirochete - - Coccus - spherical - Rod (bacillus) - rod ...