Property Prokaryotic Bacterial Cells Eukaryotic Human Cells DNA within a nuclear membrane No Yes Number of chromosomes 1 More than 1 Mechanism of Replication Binary Fission Mitosis Presence of organelles, e.g. Golgi, mitochondria, lysosomes,… Read More »Eukaryotes vs. Prokaryotes
Learning Objectives: You should be able to: describe the major differences between eukaryotic and prokaryotic cells and explain why it is important to know the differences. use bacterial nomenclature properly. describe the phenotypic features used… Read More »Bacterial Classification and Structure
The study and diagnosis of infectious diseases is approached from an organ system perspective. Upper and Lower Respiratory Tracts Gastrointestinal Tract Urinary Tract Genital Tract Central Nervous System Skin and Soft Tissues Eye Systemic and… Read More »Infective Syndromes
A. Observations of “acquired immunity” to diseases and primitive vaccination practices contributed to our understanding of the immune response to infectious agents and the design of passive and active immunization strategies. INTRODUCTION Routine immunization… Read More »Immunity and Immunization
Relative sizes of microorganisms: Protozoa > Red Blood cell > Yeast > Bacteria > Mycoplasma > Viruses Fungi 1. David Gruby (1841-1845) identified yeast infections as the cause of thrush and fungi as the cause… Read More »Other microorganisms as causative agents of disease
Most microorganisms are not pathogenic for humans. Commensal microorganisms (mostly bacteria) make up the normal flora of the human body; they are generally harmless and actually protect the host from invasion by pathogenic microorganisms. They… Read More »Microorganisms and Their Human Hosts
Learning Objectives: You should be able to: describe the relative impact of infectious diseases on human health and morbidity, and the effects they can have on human behavior and society, political policy, and the… Read More »Introduction to Infectious Disease