Micro| Gram Positive Bacteria

3.03 Gram Positive Bacteria   Microbiology review for the USMLE Step 1 Exam.   Gram positive bacteria are characterized by their ability to retain the violet stain during the gram stain procedure, due to their thick peptidoglycan cell walls Gram positive bacteria can be cocci (spherical) or bacilli (rod-shaped) Cocci can be grouped in clusters, pairs, or chains Gram positive cocci in pairs or chains include streptococcus (pairs or chains), enterococcus (pairs), and staphylococcus (clusters) Hemolysis describes the ability of a bacteria species to break down red blood cells and is categorized as alpha (partial), beta (complete), or gamma (none) Coagulase activity refers to the presence of an enzyme that causes blood to coagulate and is present in some staphylococcus species Gram positive bacilli can be aerobic (listeria, bacillus, corynebacterium) or anaerobic (clostridium)

Om Podcasten

USMLE Step 1 audio lessons designed to be listened to over and over again. Episodes cover material from many different areas including the cardiovascular system, pulmonary system, microbiology, and more! Listen when at the gym, commuting, cooking, or whenever you are on the go. Episodes are written, recorded, and mixed by Sam Smith.