Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 1.4, Problem 1TQ
Summary Introduction
To review:
The incapability of all living organisms to fix its own nitrogen.
Introduction:
Nitrogen is a vital factor for plant growth and development. It is a part of chlorophyll, the most significant pigment required for photosynthesis. Although it is one of the most abundant elements, plants can only use reduced forms of this element. Bacteria and Archaea fix the nitrogen by reducing it to ammonia.
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Microbiology: An Evolving Science (Fourth Edition)
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- Why is nitrogen a limiting nutrient for so many organisms, and what is it used for? (consider the four types of organic molecules)arrow_forwardWhat are some nonrenewable resource in our biological system ?arrow_forwardThe biological pump in the ocean O A) is independent of the atmosphere. O B) moves carbon to deeper waters. O C) moves carbon toward the surface. D) circulates oxygen.arrow_forward
- How do humans alter the nitrogen cycle, and what can scientists, engineers, and the public do to mitigate the damage?arrow_forwardWhat incentives cause humans to capture nitrogen from the air and pump it into the nitrogen cycle? What are some consequences of human augmentation of the nitrogen cycle?arrow_forwardWhat is the most abundant form under which nitrogen is found in nature?arrow_forward
- Nitrifying bacteria participate in the nitrogen cycle mainly by(A) converting nitrogen gas to ammonia.(B) releasing ammonium from organic compounds, thusreturning it to the soil.(C) converting ammonium to nitrate, which plants absorb.(D) incorporating nitrogen into amino acids and organiccompoundsarrow_forwardWhy is it important that decomposers such as bacteria release nutrients?arrow_forwardWhy does too much carbon dioxide in the atmosphere cause climate change? A) It cools down our planet B) blocks out UV rays C) traps heat and warms up our planet D) lets sunjght escapearrow_forward
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