Photosynthesis and Bacteria Quiz

Organisms that use sunlight to produce energy, capturing carbon dioxide and releasing oxygen as a byproduct.

Cyanobacteria, the only known type of oxygenic photosynthetic bacteria, are responsible for generating oxygen in Earth's early atmosphere.

Photosynthetic bacteria that do not produce oxygen, consuming carbon dioxide but not releasing oxygen.

Photosynthetic bacteria that utilize sulfur and are classified into two groups: purple sulfur bacteria and green sulfur bacteria.

A group of photosynthetic bacteria classified into two types: purple non-sulfur bacteria and green non-sulfur bacteria.

A type of anoxygenic photosynthetic bacteria that are filamentous and found in various environments, including hot springs and wetlands.

A type of anoxygenic photosynthetic bacteria that are unique for their ability to capture light energy using a special pigment called bacteriochlorophyll.

The process that captures light energy and converts it into chemical energy, utilized to fix carbon dioxide into organic compounds.

Microorganisms that photosynthesize using hydrogen sulfide as their energy source, found in stagnant water or hot springs. They release sulfur as a byproduct.

Photosynthetic bacteria that use hydrogen as their energy source, a specific type of 'purple bacteria'.

A type of photosynthetic bacteria that are capable of using either sunlight or organic compounds for energy.

A type of photosynthetic bacteria that grows in long, filamentous chains. They can either produce their own food through photosynthesis or use organic compounds.

The first stage of photosynthesis, where light energy is captured and converted into chemical energy.

The second stage of photosynthesis, where the energy from the light reaction is used to convert carbon dioxide into sugars.

Molecules found in photosynthetic organisms that absorb light energy.

Pigments that absorb light energy and transfer it to chlorophyll, making photosynthesis more efficient.

The primary pigment involved in photosynthesis and absorbs light energy, particularly in the red (660nm) and blue (440nm) wavelengths.

Large, organized structures composed of chlorophyll and accessory pigments that capture light energy efficiently.

A photosystem that absorbs longer wavelengths of light (≥680 nm) and contains the reaction center chlorophyll P700.

A photosystem that absorbs shorter wavelengths of light (680 nm) and contains the reaction center chlorophyll P680.

A special chlorophyll molecule in photosystem I that absorbs light energy effectively at 700 nm and becomes excited.

A special chlorophyll molecule in photosystem II that absorbs light energy effectively at 680 nm and becomes excited.

The process where electrons cycle through the electron transport chain, returning to P700, and ATP is produced.

The process where light energy is used to excite a molecule called P680, which then passes electrons through a chain of carriers to eventually reduce NADP⁺.

The pigment present in green and purple bacteria that absorbs light energy at wavelengths longer than chlorophyll.

A complex molecule that acts as an electron carrier in the light reaction of photosynthesis.

Organisms that obtain energy from sunlight, using it to produce their own food.

A type of photosynthesis where oxygen is not produced as a byproduct.

Organisms that obtain carbon from sources other than CO2.

They live within another organism, benefiting both partners.

Filamentous anoxygenic phototrophs, a group of bacteria that use light energy and do not produce oxygen.

A type of photosynthetic pigment found in eukaryotes and cyanobacteria, absorbing light energy at around 550nm.

A type of photosynthetic pigment found in eukaryotes and cyanobacteria, absorbing light energy at around 620-640nm.

The name for the energy-carrying molecule produced during the cyclic electron transport in photosynthesis.