Exam 16: Prokaryotes: the First Single-Celled Creatures

When bacterial cells participate in conjugation,the bridge between the cells through which the DNA passes is:

When a bacteriophage infects a bacterial cell,it injects ___________ into the host cytoplasm.

Some bacteria attach to surfaces of other cells with short outgrowths called _____________.

Which of the following is endemic in wild rodents populations of the western United States?

Under harsh environmental conditions,some bacteria are able to form thick-walled ______________ to protect them for up to hundreds of years until conditions improve.

When the bacteriophage DNA becomes part of the bacterial chromosome:

Some bacteria can pass plasmids from one cell to another in a process called ________________.

Bacteriophages that integrate into the host's genome do so during a _____________ cycle.

Spherical bacteria are called:

How do viruses gain entry into cells?

The ________________ model proposes that when life originated,key chemical processes generating the building blocks of life were contained in a spherical structure.

_____________________ use light as their source of energy and organic molecules such as carbohydrates as their source of carbon.

When bacterial cell walls are covered with an outer membrane that contains lipopolysaccharide,they are:

All viruses have an envelope around their capsid.

Flu viruses are most likely to arise in the Far East because:

All of the following are correct about HIV except:

The HIV virus attaches to the __________,and is thus taken into certain immune cells.

Which of the following diseases can be considered among the most devastating of all time?

Discovery that viruses act more like a chemical than an organism came from work with the:

The viruses that can infect bacterial cells are: