You Are Looking at a Sample from the Top Green

question 54

Multiple Choice

You are looking at a sample from the top green layer of a colorful bacterial mat. Using phase contrast and fluorescence microscopy, you see evenly spaced cells in the middle of a filament that are slightly smaller than the others. The smaller cells are not fluorescent, indicating they lack photosystem II, but the rest of the filament is fluorescent. What is the most likely function of the smaller cells in the filament?

• A) survival in the dark
• B) nitrogen fixation
• C) sulfur storage
• D) nitrate storage

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Definitions:

Sergey Diaghilev

A prominent Russian art critic, patron, ballet impresario, and founder of the Ballets Russes, who significantly influenced the ballet and artistic scene in the early 20th century.

Émile Durkheim

A French sociologist, significant for his contributions to the establishment of sociology as a recognized academic discipline and for his theories on social cohesion and anomie.

Gustave Le Bon

A French social psychologist best known for his work on crowd psychology, arguing that crowds transform individual psychology, leading to uncharacteristic behaviors.

Modern Life

Describes contemporary human existence, characterized by advanced technology, urbanization, and complex social structures.