CH 16 Prokaryotes & Protists

Question 1

Define Microbiota

Answer 1

community of microorganisms that live in & on our bodies

Question 2

Define Pathogens

Answer 2

Dieases-causing agents that are harmful to their host (bacterial)

Question 3

Describe Cocci (coccus)

Answer 3

Spherical Prokaryotke cells in chains/clusters

Question 4

Describe Bacci (Bacillus)

Answer 4

rod-shape prokaryote in singles, pairs or chains/rods. Could be threadlike

Question 5

Describe Spirilla (Spirillum)

Answer 5

spiral cell shape (corkscrew). Short & rigid

Question 6

Describe Spirochetes

Answer 6

Longer, more flexible spiral cells. Can cause Lyme disease & Syphilis.

Question 7

Cell walls of bacteria can be identified with a technique called…

Answer 7

Gram Stain

Question 8

Gram Positive Wall is…

Answer 8

Simple walls w/ thick layer of peptidoglyean

Question 9

Define Peptidoglyean

Answer 9

Polymer of sugars cross linked by short polypeptides

Question 10

Gram Negative Wall is…

Answer 10

Stain different cuz less Pepti & more complex wall w/ outer membrane lipid bonded to carbs

Question 11

Flagella allows bacteria to…

Answer 11

move in response to chemical/physical signals in environment

Question 11

Define Fimbriae

Answer 11

Hair-like projections dat enable some Prokaryotes to stick to surface or another

Question 12

What do Cillia do?

Answer 12

move water relative to the cell in a regular movement

Question 13

Define Adaptability.

Answer 13

Ability of bacteria to multiply rapidly in favorable environments

Question 14

Define Endospore.

Answer 14

Specialized resistant cells (By Prokaryotes)