Lecture 13 Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Methanogen

A

All Archaea. Electron donor H2 Acceptor CO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Sulfate Reducer

A

Electron Donor is oftern organic. Acceptor SO4^2- or S. Produce H2S. Uses organic carbon source

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Sulfur Oxidizer

A

Uses S, H2S as electron donor and O2 as an acceptor. Forms internal S granules. Produces SO4^2- or H2SO4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Biomining

A

new approach to the extraction of desired minerals from ores being explored by the mining industry in the past few years. Microorganisms are used to leach out the minerals, rather than the traditional methods of extreme heat or toxic chemicals, which have a deleterious effect on the environment.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Nitrogen Cycle

A

the process by which nitrogen is converted between its various chemical forms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Nitrogen Fixation

A

nitrogen (N2) in the atmosphere is converted into ammonia (NH3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Root Nodule

A

occur on the roots of plants that associate with symbiotic nitrogen-fixing bacteria. Under nitrogen-limiting conditions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Nitrogenase

A

enzymes used by some organisms to fix atmospheric nitrogen gas (N2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Leghemoglobin

A

a nitrogen or oxygen carrier, because naturally occurring oxygen and nitrogen interact similarly with this protein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Nitrification

A

the biological oxidation of ammonia with oxygen into nitrite followed by the oxidation of these nitrites into nitrates.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

BOD (biochemical O2 demand)

A

the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at certain temperature over a specific time period

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Denitrification

A

microbially facilitated process of nitrate reduction that may ultimately produce molecular nitrogen (N2) through a series of intermediate gaseous nitrogen oxide products.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Enterobacteriaeceae

A

a natural family of rod-shaped gram-negative bacteria, most of which occur normally or pathogenically in intestines of humans and other animals, and some of which grow in plants.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Cyst

A

closed pocket or pouch of tissue. It can be filled with air, fluid, pus, or other material.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Social Gliding Motility

A

microbes to travel in environments with a low water content, such as might be found in biofilms, microbial mats, and soil. Gliding is defined as the movement of a cell on a surface in the direction of the long axis of the cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Filamentous Rod

A

often surrounded by a sheath that contains many individual cells. Rod shaped

17
Q

Caulobacter Life Cycle

A

A cell cycle for replication. only stalked cells replicate. Flagella and stalks from in opposite daughter cells

18
Q

Stalked Cell

A

one of the two cells produced by division of the generative cell in the pollen grain of some gymnosperms that bears or supports the body cell

19
Q

Swarmer Cell

A

The daughter cell which separates from the stalked mother cell in bacteria in the genus Caulobacter.

20
Q

Photoluminescence

A

describes the phenomenon of light emission from any form of matter after the absorption of photons

21
Q

Crown Gall

A

a bacterial disease of plants, esp. fruit bushes and trees, that is characterized by large tumorlike galls on the roots and lower trunk.

22
Q

Ti Plasmid

A

a circular plasmid that often, but not always, is a part of the genetic equipment

23
Q

T-DNA

A

the transferred DNA of the tumor-inducing (Ti) plasmid

24
Q

Halophile

A

organisms that live in high salt concentrations

25
Q

Hyperthermophile

A

an organism that thrives in extremely hot environments— from 60°C (140°F) upwards