Portage Learning: Microbiology Module 4 Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

Portage Learning: Microbiology Module 4 Questions and Answers | Latest Version | 2025/2026 | Correct & Verified What type of organism requires oxygen to survive and grow? Obligate aerobe What type of organism grows best without oxygen and may be harmed by it? Obligate anaerobe What type of microorganism can survive with or without oxygen but grows better with it? Facultative anaerobe What type of microbe uses oxygen but only in low concentrations? Microaerophile What type of microbe does not use oxygen but is not harmed by its presence? Aerotolerant anaerobe 2 What type of temperature-loving microbes thrive in hot environments like hot springs? Thermophiles What type of microorganism thrives at moderate temperatures around 37°C? Mesophiles What type of microbe prefers cold environments like polar regions? Psychrophiles What type of microbes tolerate very salty conditions such as in the Dead Sea? Halophiles What type of bacteria grows in high pressure environments such as the deep ocean? Barophiles What type of growth phase involves rapid cell division and population doubling? Log phase 3 What type of growth phase shows no increase in cell number as cells adapt? Lag phase What type of growth phase is marked by equal rates of cell division and cell death? Stationary phase What type of growth phase involves more cell death