Exam 3: Bacterial Cell Structure

Growth factors cannot by synthesized by the bacteria that use them and include amino acids,pyrimidines,and vitamins. ASM

The term used to describe bacteria that are intermediate in shape between spherical and rod-shaped is

Different transport systems for the same nutrient that are part of the same organism are usually regulated in different ways. ASM

Transport of two different substances can be linked.If the transport is in the same direction it is called __________; if the transport is in opposite directions it is called __________. ASM

Export of flagellin subunits is mediated by

The layers of peptidoglycan of the bacterial cell wall can be cross-linked by peptide intrabridges or by direct cross-linking.

Sterol-like molecules called hopanoids are thought to be important for the structural integrity of many bacteria because of their suspected role in membrane stabilization.

Gram-positive bacteria have a structurally and chemically more complex cell wall than gram-negative bacteria.

Flexible bacteria with a helical shape are called

A __________ is a polysaccharide layer that lies outside the cell wall and is not easily removed.

During the assembly of the flagellar filament,the flagellin protein monomers assemble at the cell proximal base of the flagellum.

The most widely accepted current model for membrane structures is called the __________ model.

Bacterial flagella are composed of three parts: the ______ body,which is embedded in the cell,the hook,and the _______,which is the longest part of the flagellum.

Endospores are resistant to most environmental stressors because they have _____ complexed with calcium ions which stabilize DNA.

Copper (Cu)is considered a micronutrient. Blooms Level: 1.Remember Learning Outcome: 03.03.02 Distinguish macroelements (macronutrients)from micronutrients (trace elements)and provide examples of each Section: 03.03