Lab 2 And 4

Front 1

Ecology

Back 1

The study of the interactions and relationships between living things and the environment.

Front 2

Microbial Community

Back 2

An assemblage of populations that interact with each other.

Front 3

Gradients

Back 3

A series of progressively increasing or decreasing differences in the growth rate, metabolism, or physiological activity of a cell, organ, or organism.

Front 4

anoxic

Back 4

Anaerobic. Devoid of oxygen.

Front 5

aerobic

Back 5

Oxygen is present.

Front 6

Oxygenic phototrophic organisms

Back 6

They use light to generate carbohydrates(and other organic compounds) and oxygen from carbon dioxide and water.

Front 7

photosynthesis

Back 7

6CO2 (Carbon dioxide) + 6H2O(water) -> C6H12O6 (carbohydrates) + 6O2(oxygen)
or

6CO2 + 6H2S -> C6H12O6(biomass) + 6S(sulfur)

Front 8

Clostridia

Back 8

Strictly anaerobic bacteria that are poisoned by oxygen. Thrive in the deep anoxic mud and degrade cellulose into organic acids.

Front 9

Desulfovibrio

Back 9

Use the organic acids made by the Clostridia to vonbrty oxidized forms of sulfur (such as sulfate) into hydrogen sulfide. They generate the hydrogen sulfide gradient in the Winogradsky column.

Front 10

Photosynthesis

Back 10

The conversion of light energy to chemical energy that is stored in glucose or other organic compounds; occurs in plants, algae, and certain prokaryotes.

Front 11

Chlorobium

Back 11

Phototrophic green sulfur bacteria that are anoxygenic phototrophs since they can grow from light alone. They don't generate oxygen, however, they convert hydrogen sulfide to sulfur

Front 12

Heterotroph

Back 12

An organism that obtains organic food molecules by eating other organisms or their by-products.

Front 13

Autotroph

Back 13

An organism that obtains organic food molecules without eating other organisms or substances derived from other organisms. Autotrophs use energy from the sun or from the oxidation of inorganic substances to make organic molecules from inorganic ones.

Front 14

Phototrophs

Back 14

Organisms that obtain energy from light.

Front 15

Chemotrophs

Back 15

Organisms that obtain energy from chemicals.