The Structures Marked with Arrows in the Photo Below Are

question 15

Multiple Choice

The structures marked with arrows in the photo below are ________ and are used to ________.

• A) polyhydroxyalkanoates; sequester reactions using bicarbonate or carbon dioxide and Rubisco
• B) polyhydroxyalkanoates; store carbon for energy
• C) carboxysomes; store carbon for energy
• D) carboxysomes; sequester reactions using bicarbonate or carbon dioxide and Rubisco
• E) heterocysts; sequester reactions using bicarbonate or carbon dioxide and Rubisco

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Definitions:

Mitral Valve

A valve in the heart that allows blood to flow from the left atrium into the left ventricle but prevents it from flowing back into the atrium.

Atrioventricular Valve

Heart valves located between the atria and ventricles of the heart, facilitating unidirectional blood flow.

Bicuspid Valve

A valve in the heart that has two cusps or flaps, and controls blood flow between the left atrium and the left ventricle; also known as the mitral valve.

Sinoatrial Node

The heart's natural pacemaker, located in the right atrium, responsible for initiating the heart's contractions.