Cyanobacteria,or Blue-Green Algae,are Considered the Most Ancient Organisms Capable of Photosynthesis.Given

question 7

Multiple Choice

Cyanobacteria,or blue-green algae,are considered the most ancient organisms capable of photosynthesis.Given what you know about cyanobacteria,which of the following is the more similar species?

• A)Rickettsia rickettsii;A unicellular intracellular pathogen that infects warm-blooded animals,including humans,causing Rocky Mountain spotted fever.
• B)Halobacterium salinarum;A unicellular obligate aerobe that often inhabits hypersaline lakes.This species produces gas vesicles in order to maximize its access to oxygen at the lake's surface.
• C)Nitrosolobus multiformis;A unicellular rod-shaped nitrifying bacterium that inhabits subsurface soils at depths associated with plant roots.
• D)Nostoc verrucosum;A filamentous species often found in shallow streams and creeks that is capable of fixing atmospheric nitrogen using specialized cells known as heterocytes.

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Definitions:

Retained Earnings

Profits that a company keeps or reinvests after dividends are paid out to shareholders, instead of distributing them completely.

Optimal Market Structure

A market configuration that maximizes efficiency and consumer welfare, often characterized by competitive markets, absence of monopolies, and minimal barriers to entry.

Technological Advance

The development of new technologies or the improvement of existing ones, which can lead to increased efficiency, productivity, and economic growth.

Oligopolistic Firms

Companies that operate in an oligopoly, a market structure characterized by a small number of firms controlling the majority of the market share.