MICRO: Chapter 4 Quiz

Please select all of the following which are contents of the cell cytoplasm.

-Chromosome -Ribosome -Water

Please select all of the following that are characteristics of archaea.

-Prokaryotic -Circular chromosome -Contain long-chain hydrocarbons in the cell membrane

Classification systems are used to organize bacterial pathogens by the type of disease or infection each causes.

False?

Of the photosynthetic bacteria, cyanobacteria produce ______ as a product of photosynthesis but the green and purple sulfur bacteria do not produce this substance.

Oxygen

A taxonomical outline of bacterial species based on shared evolutionary histories would be described as a

Phylogenetic system

The bacterial flagellum moves

by rotation that is powered by the proton motive force.

The cell envelope is the external covering that lies outside of the cell cytoplasm and is composed of the _______ and _______.

-Cell membrane -Cell wall

Please select all of the following which are purposes of classification and taxonomy in the study of prokaryotes.

-Classification and taxonomy can assist in identifying an unknown organism. -Classification and taxonomy can assist in studying the evolutionary origins of an organism. -Classification and taxonomy can assist in identifying a new species of organism.

Please select all of the characteristics that define life and living things.

-The ability to synthesize new cell components or release energy through chemical reactions -Ability to respond to their environment -The presence of a cell wall -The presence of a nucleus

The best understood bacterial cytoskeletons are composed primarily of

Actin

Excess nutrients that the cell may store for later use may be found within

Cytoplasmic granules.

Other than maintaining the shape of the cell, what is the primary function of the cell wall, and which component contributes most to this function?

Maintaining strength; peptidoglycan

Bacterial species are defined in a fundamentally different way than mammalian species are. This is because

Mammals are large enough to easily see the characteristics used to assign them to a particular species. WRONG

The _______ level of bacterial organisms refers to a group of organisms that all share the same traits while the subspecies level refers to the variation or differences of individual cells within that group.

Species

Ribosomes function primarily to

Synthesize proteins