Endospores - Study guides, Class notes & Summaries

What is bacitracin? - ️️A component of antibiotic ointments What are signs of an allergic reaction? - ️️cracking, bleeding, excessive swelling, bumps, dry skin, oozing pain, itchy skin, raise blisters, scabbing, burning, tender to touch, refuses to heal. What is sanitizer? - ️️an agent that reduces the number of microorganisms on a surface ex. countertops, sinks, door knobs / cavi wipes What is a disinfectant? - ️️stronger chemical that destroys bacteria on objects that ...

Question Bank for Microbiology Bacterial endospores - CORRECT ANSWERS Protects against radiation, heat & dehydration Anaerobic - Clostiridium Aerobic - Bacillus Lactic starter cultures - CORRECT ANSWERS Acid producing ability, lack of gas production, resistance to bacteriophage Effects on flavour, compatibility with other strains, temperature optima peptidoglycan - CORRECT ANSWERS Contains D- and L- amino acids Target for certain antibacterial antibiotics N-acetyl glucosamine & N-ac...

Microbiology Test Question bank With 100% Correct and Verified Answers Gram-negative bacteria used for gram reactions are not easily affected by penicillin as they: a- have more resistant endospores. b- have an impermeable out membrane. c- produce penicillinases. d- have a thick peptidoglycan cell wall. e- replicate faster. ——————————————————————————————————— Which structure protects bacteria from being phagocyt...

Straighterline Microbiology Final Exam Questions and Answers | Latest Version | 2024/2025 | Already Passed What are prokaryotic cells, and how do they differ from eukaryotic cells? Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have a nucleus and complex organelles. What is the function of the cell wall in bacteria? The cell wall provides structure and protection to the bacterial cell. What are endospores, and why are they important? ...

Hershey and Chase performed an experiment in order to determine how bacteriophages infect bacteria. What did they find? CORRECT ANSWER 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: CORRECT ANSWER The gram + cell has a much thicker peptidoglycan layer Why does a Gram + cell stain blue/purple in a gram stain? CORRECT ANSWER The Gram + cell stains ...

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...

NEW IBEC LASER AND IPL spironolactone does what to the body? - correct answer inhibits the effect of androgens type 1 diabetes is considered to be - correct answer insulin dependent the destruction of all microorganisms including endospores is called - correct answer sterilization bacteria can be classified into how many shapes? - correct answer 3 so small even a microscope cant see it - correct answer virus what is enzyme detergent used for - correct answer used as soaking soluti...

Microbiology - A branch of biology, that deals with all members of the microbial world Classes of Microbiology - Bacteria, Fungi, Protozoa, Algae and "viruses." Beneficial Bacteria - The majority of the bacteria are beneficial. Only about 3% are harmful. Examples of benefits we get from bacteria and fungi include - Bacteria and fungi decay organic matter. Most antibiotics are made by bacteria and fungi. Normal flora contribute to health. Intestinal bacteria are involved in pr...

MICR 290 FINAL EXAMINATIONS QUESTIONS WITH REVISED ANSWERS Clostridium perfringens - Answer--Causes gas gangrene -Bacterial endospores survive harsh conditions -vegetative cells secrete 11 toxins Clostridium tetani - Answer--Causes tetanus -Spores grow in deep wound and vegetative cells produce neurotoxin called tetanospasmin -Blocks release of inhibitory neurotransmitters at the neuromuscular junction Corynebacterium diphtheriae - Answer--Causes diphtheria -Toxin is t...

Define Sterilization process that destroys 100% of microbes on non-living surfaces (including endospores) Define disinfection process used to destroy most, but not all, microbes on non-living surfaces (does not kill bacterial endospores) Define disinfectant physical or chemical agent used to kill microbes on non-living surfaces Define antiseptic used on living tissue to reduce risk of infection or sepsis Define sanitation physical removal of microbes by cleaning (soaps & detergents) Define ...