Although Similar to Eukaryotic Photosynthetic Organisms,cyanobacteria Are Different Because They

question 39

Multiple Choice

Although similar to eukaryotic photosynthetic organisms,cyanobacteria are different because they

• A)have only photosystem I not photosystem II.
• B)have only photosystem II not photosystem I.
• C)do not have chloroplasts.
• D)do not have any photosynthetic membranes.

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Definitions:

Pain-Controlling Chemicals

Substances produced by the body, such as endorphins, that naturally reduce pain through their action on the nervous system.

Body

The physical structure of a person or an organism, including bones, flesh, and organs.

Receptor

A protein molecule that receives chemical signals from outside a cell and, when bound to a specific molecule, can initiate a physiological response.

Neurotransmitter Keys

Molecules that transmit signals across the synaptic gap between neurons in the nervous system, functioning like keys to activate or inhibit neuronal processes.