lab 6: Microbial diversity

Question 1

the 2 kingdoms of prokaryotes

Answer 1

Eubacteria and archaea

Question 2

although they’re prokaryotic they….

Answer 2

do not appear closely related

Question 3

Archea lives in?

Answer 3

Extreme enviroments

Question 4

Eubacteria is found?

Answer 4

Everywhere
- They’re part of human biology, causing disease, adding or eliminating agricultural crops, contributing to decay of organic material, and promoting production and industrial processes.

Question 5

we will examine representative species from the three major groups of bacteria, classified according to their?

Answer 5

• shapes: rods, spheres (cocci), and spirals
• characteristic patern of cell aggregation, appearing as chains of cells (similar to beads on a string) or as clumps (resembling bunches of grapes)

Question 6

Clostridium

Answer 6

• rod-shaped bacteria are obligated anaerobes
• found in soil, form spores to survive through unfavorable conditions

Question 7

clostridium botulinum found in?

Answer 7

garden produce, and are canned or preserved in an anaerobic environment without adequate treatment to kill the spores

Question 8

the neuromuscular junction in mammals is responsible for?

Answer 8

symptoms of the food poisoning

Question 9

during growth the bacteria produce a toxin responsible for?

Answer 9

food poisoning

Question 10

streptococcus pneumoniae

Answer 10

• cocci bacterium
• isolated in 1881 by Louis Pasteur
• responsible for causing pneumonia, among other infections

Question 11

Rhodospirillum rubrum

Answer 11

• photosynthetic anaerobe
• found on stagnant water and mud
• photosynthetic pigments are found in membrane vesicle
• photosynthesis originated these bacteria

Question 12

protozoans

Answer 12

• a group of microscopic, animal-like, single-celled organism

Question 13

the main modes of locomotion

Answer 13

• cilia (Ciliophora), pseudopodia (rhizopoda) and flagella (sarcomastigophora)

Question 14

Non-motile were classified as?

Answer 14

sporozoans in the phylum Apicomplexa

Question 15

first part of the lab we will observe?

Answer 15

• ciliate, Stentor, uses cilia for feeding
• this organism carries our complex life functions

Question 16

second we will examine Amoeba

Answer 16

• a protist with pseudopodia
• nutrient, wastes, and water pass in and out of the cell membrane, while materials crucial de cell’s survival

Question 17

Last we will observe flagellated

Answer 17

• protist known as euglena
• found in freshwater
• important in organism in molecular genetic