Bio EXAM 2 MRSA

Which of The following conditions are required for evolution to occur?

Select all that apply.

Individuals within a population must vary in their ability to compete for resources.

There must be equal reproductive success among individuals in a population.

Traits must be heritable.

Resources must increase at the same rate that the population grows.

Resources in the environment must be limited.

Most offspring must survive.

Individuals within a population must vary in their ability to compete for resources.

Traits must be heritable.

Resources in the environment must be limited.

Binary fission produces

endospores

bacilli

two genetically identical bacterial cells

biofilms

two genetically identical bacterial cells

Which method of bacterial DNA transfer involves a physical connection between the two bacterial cells?

Transduction

Transformation

Binary fission

Conjugation

Conjugation

What is MRSA?

A disease-causing virus

An antibiotic-resistant bacterium

An infectious fungus

A transmittable parasite

An antibiotic-resistant bacterium

Bacteria that have a spherical shape are called

bacillus

coccus

spheroid

spirillum

coccus

Which of the following statements is accurate?

Prokaryotes are found virtually everywhere on Earth.

Prokaryotes nutrition is highly diverse.

Prokaryotes come in a variety of shapes.

All of the above are accurate

All of the above are accurate

Which of the following is a way in which bacteria help the environment?

• They break down dead organisms in the soil and recycle nutrients.

• They are used to clean water in sewage treatment facilities.

• They remove pollutants from the environment.

• All of the above are ways in which bacteria help the environment.

All of the above are ways in which bacteria help the environment.

plasmid

small circular molecule of DNA that reproduces independently of the larger bacterial chromosome.

transformation

occurs when a bacterium internalized bits of DNA from its environment.

conjugation

involves the building of a physical bridge between two bacteria. DNA then moves across this bridge from a donor cell to a recipient cell.

transduction

involves the transfer of DNA from one bacterium to another by a virus.

binary fission

process of dividing a cell in half, yielding two genetically identical offspring cells.