Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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The Cycling of Essential Chemicals

There are many elements that are necessary for maintaining life that must be cycled through the ecosystem. During this module, we have discussed the cycling of carbon, and nitrogen. For each of the items, determine if it is relevant to the element or its cycle.

Categories:

Carbon, Nitrogen, Carbon and Nitrogen

Answers:

Involved in cellular respiration

If this element is in excess in the cycle, it can cause eutrophication

Involved in cellular respiration

Main reservoir is in the atmosphere

If this element is in excess in the cycle, it can cause eutrophication

The burning of fissil fuels increase its levels in the environment

Involved in photosynthesis

Converted by bacteria during its cycle

Definition Definition Set of metabolic processes and reactions that produce energy from organic substances such as glucose. Cellular respiration takes place in the organism’s cells, where the chemical energy from nutrients or molecules of oxygen is converted into adenosine triphosphate (ATP). Cellular respiration that occurs in the presence of oxygen is called aerobic respiration; in the absence of oxygen, it is called anaerobic respiration.

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