Which Organisms Represent the Common Ancestor of All Photosynthetic Plastids

question 64

Multiple Choice

Which organisms represent the common ancestor of all photosynthetic plastids found in eukaryotes?

• A)autotrophic euglenids
• B)diatoms
• C)dinoflagellates
• D)red algae
• E)cyanobacteria

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Definitions:

Repolarization

The process by which cells restore their resting negative membrane potential after depolarization.

Cardiac Muscle Cells

Specialized muscle cells found in the heart that contract rhythmically and involuntarily to pump blood throughout the body.

Capillary Network

A complex intertwining of capillaries supplying organs and tissues with nutrients and oxygen and removing waste products.

Oxygen Deficit

Oxygen necessary for the synthesis of the ATP required to remove lactic acid produced by anaerobic respiration.