TCDHA Characteristics of Microorganisms Ch. 2 fully solved 2023/2024

TCDHA Characteristics of Microorganisms Ch. 2Bacteria - correct answer - Makes up a large group of one celled mo's - Grows best at 98.6 F in most, dark environment Viruses - correct answer - Small in size and cause fatal diseases - Can live and multiply only inside a appropriate host cell Algae - correct answer - Range from single-celled to larger multiple cell organisms that are known as seaweed and kelp - Do not produce human disease Protoza - correct answer - Large group of one-cell organisms - Do not have rigid cell wall - Small number are responsible for intestinal infections of human and others invade the blood, lungs, liver, or brain Fungi - correct answer - Mushroom, yeasts and mold - Oral candidiasis is a common form of this group of mo's found in the dental office Prokaryotes vs. Eukaryotes - correct answer - Prokaryotes have no nucleus or membrane bound organelles - Eukaryotes have a nucleus and membrane bound organelles - Both can reproduce and respond to the environment Primitive Cells - correct answer Prokaryotes Cells Complex Cells - correct answer Eukaryote Cells What are some features Prokaryotic cells don't have? - correct answer I) Cell wall II) Cilia III) ER IV) Vacuoles & Vesicles V) Mitochondria VI) Chloroplasts VII) Golgi Complex VIII) Lysosomes IX) Nucleus Endospores - correct answer - Thick wall-walled structure; one of the most resistant forms of life against heat, drying and chemicals - Defence mechanism/protection against adverse conditions - EXTREMELY HARD TO KILL Mesosomes - correct answer Cell membrane folds up into cytoplasm and increases the internal surface area for membrane function. What are three basic shapes of cells? - correct answer Cocci (spherical), Spiral, and Bacillus (rod-shaped) Bacterial Growth - correct answer Increase in number of cells Binary Fission - correct answer The cells divide by this process What are the five major chemical or physical conditions influence growth of bacteria? - correct answer I) Temperature II) Acidity (pH of 5.5-8.5, optimal growth @ pH 7.0) III) Nutrients IV) Oxygen metabolism