T3L2 Prokaryotic cell ultrastructure Flashcards

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1
Q

Name the 10 features of a prokaryotic cell

A

Pilli/Fimbrae
Capsule
Cell Wall
Plasma membrane
Mesosome
Cytoplasm
Ribosome
Plasmid
Circular DNA in a nucleoid
Flagellum

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2
Q

Are all structures present in every prokaryote

A

NO

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3
Q

Describe fimbrae/pilli

A

Protein tubes on the outside of a prokaryote - for adhesion to surfaces

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4
Q

Describe the capsule

A

A slimy layer on the surface of the prokaryote

For protection and to prevent dehydration (there are many functions that range)

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5
Q

Describe the cell wall

A

Contains peptidoglycan a polypeptide+polysaccharide COMBINED

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6
Q

Describe how DNA is found in a prokaryotic cell

A

Mainly in a circular strand of DNA (found in a nucleoid)

Also found in plasmids (DNA rings) that can be exchanged between bacteria (conjugation)

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7
Q

What is a mesosome

A

an infolding of the cell surface membrane where respiration occurs

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