A Pbursaria Cell That Has Lost Its Zoochlorellae Is Said to to Be

question 9

Multiple Choice

A P.bursaria cell that has lost its zoochlorellae is said to be aposymbiotic.It might be able to replenish its contingent of zoochlorellae by ingesting them without subsequently digesting them.Which of the following situations would be most favorable to the reestablishment of resident zoochlorellae,assuming that compatible Chlorella are present in P.bursaria's habitat?

• A)abundant light,no bacterial prey
• B)abundant light,abundant bacterial prey
• C)no light,no bacterial prey
• D)no light,abundant bacterial prey

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Definitions:

Protein Pumps

Membrane proteins that use energy to transport ions or molecules across cell membranes.

ATP

Adenosine triphosphate, an organic compound that provides energy to drive many processes in living cells, such as muscle contraction, nerve impulse propagation, and chemical synthesis.

Extracellular Matrix

A complex network of proteins and carbohydrates surrounding cells, providing structural and biochemical support.

Channels

Structures or proteins that allow the passage of ions or molecules across cell membranes or through the cytoplasm.