Exam 7: Microbial Nutrition, Ecology, and Growth

The degree of turbidity in a broth culture correlates to the amount of cell growth.

When microbes live independently but cooperate and share nutrients, it is called

Contractile vacuoles are

Most microorganisms on earth can only live and survive in habitats that are similar to human body conditions.

The production of antibiotics is a form of antagonism called

After binary fission, daughter cells will differ genetically.

Facilitated diffusion is limited by

Lithoautotrophs use inorganic nutrients for carbon and energy sources.

A halophile would grow best in

Transverse binary fission results in 4 daughter cells from 1 parent cell.

A closed culture system is used to determine a population growth curve.

An organism that uses CO₂ for its carbon needs and sunlight for its energy needs would be called a/an

Microorganisms that live in severe habitats, such as very hot, acidic or salty environments, are called

Saprobes do not need a carbon source for growth and metabolism.

When whole cells or large molecules in solution are engulfed by a cell, this endocytosis is specifically termed

A microorganism that has an optimum growth temperature of 37 ^$\circ$ C, but can survive short exposure to high temperatures is called a(n)

The direct cell count, using a cytometer, can calculate viable cell numbers from a sample.

An organic nutrient that cannot be synthesized by the organism and must be provided is called a/an

The phase of the bacterial growth curve in which newly inoculated cells are adjusting to their new environment, metabolizing but not growing is the

The movement of substances from higher to lower concentration across a semi permeable membrane that must have a specific protein carrier but no energy expenditure is called