Microbial Cell Interior

PLASMIDS OH MY GAWD...

This microbe essential contains DNA arrangered in a cluster that is not membrane bound

Nucleoid region

How is DNA bound in the nucleoid region within a microbe?

Bound by cytoskeletal fibers

This secondary microbe essential translates mRNA to DNA

Ribosome / Polyribosome

Transcription [unfinished]

Translation [unfinished]

Which of these organisms can perform both transcription and translation at the same time?

Archaea and bacteria

How are plasmids obtained?

Scavenging and conjugation

A cell is floating around and picks up plasmid. What could happen to the plasmid?

The cell will chop up or reuse the plasmid in its DNA

In the first step of conjugation…

Two biochemically similar cells approach each other

In the second step of conjugation…

The donor cell generates a sex pillus

In the third step of conjugation…

The plasmid is replicated within the donor cell

In the fourth step of conjugation…

One plasmid moves through the sex pillus to the recipient cell

In the fifth (final) step of conjugation…

The sex pillus disintegrates and the two cells separate

After the events of conjugation, what is true about the two resulting cells?

Both cells are donor cells

A cell needs to preserve resources. What will most likely happen if the cell has a plasmid?

The plasmid is thrown

This structure can be used by the cell if material becomes scarce. Which structure is being described?

Inclusion bodies

Inclusion bodies can store which of the following?

Carbon and energy resources

This inclusion body is a pocket of gas surrounded by a protein shell that prevents water from entering

Gas vesicle

A gas vesicle serves what function?

Allows cells to be buoyant

This inclusion body has densely compacted substances without a membrane

Storage granule

A storage granule serves what function?

Stores currently abundant materials for later consumption during starvation

This inclusion body is a thin chain of magnetite that acts like a needle of a compass

Magnetosomes

A cell is observed to have a magnetosome. Which of the following will likely to happen?

The cell will orient and pull itself to Earth’s magnetic field