Nitrogen fixation - Study guides, Class notes & Summaries
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straighterline microbiology final exam 2024 with 100% correct answers
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In the nitrogen cycle, which of the following steps involves removal of nitrogen from the atmosphere by bacteria? - correct answer Nitrogen Fixation 
 
If enough H+ ions are added to pure water to raise the H+ concentration of the solution to ten times higher than the original concentration, what is the resulting OH- concentration of the solution? - correct answer 10-8 M 
 
Fungi are able to reproduce asexually by creating conidiospores and sporangiospores. Which of the following is an accurat...
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EEB 2100 UConn Exam 1 Questions + Answers Graded A+
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Main questions of course - 1. How do humans alter earth 
2. how do human alterations affect the biosphere 
3. What can be done to alleviate human alterations of the biosphere 
Greatest ecological impacts of humans(most to least) - 1. Nitrogen fixation 
2. Water use 
3. Land transformation 
4. CO2 concentration rise 
5. Ocean acidification 
6. Bird extinction 
7. Plant invasion 
Planetary Boundaries - Limits between which global systems must operate to prevent abrupt and 
irreversible environment...
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BIO 250 Straighterling Final Exam (Microbiology) 60 Questions With Correct Answers Latest Update 2023 Graded A+
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1-What microbial process was responsible for changing Earth’s atmosphere from 
one without oxygen to one with oxygen? 
Select one: 
a. anaerobic respiration 
b. decomposition 
c. oxygenic photosynthesis 
d. temperature regulation 
2-In the nitrogen cycle, which of the following phases involves the release of nitrogen 
as 
into the Earth’s atmosphere? 
Select one: 
a. ammonification 
b. denitrification 
c. nitrification 
d. nitrogen fixation 
3-Farmers commonly inoculate legume crops with Rhi...
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AQA A-level BIOLOGY 7402/2 Paper 2 Question Paper + Mark scheme [MERGED] June 2022 *jun227402201* IB/M/Jun22/E12 7402/2 For Examiner’s Use Question Mark 1 2
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AQA 
A-level 
BIOLOGY 
7402/2 
Paper 2 
Question Paper + Mark scheme [MERGED] 
June 2022 
*jun* 
IB/M/Jun22/E12 7402/2 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
TOTAL 
Time allowed: 2 hours 
Materials 
For this paper you must have: 
• a ruler with millimetre measurements 
• a scientific calculator. 
Instructions 
• Use black ink or black ball-point pen. 
• Fill in the boxes at the top of this page. 
• Answer all questions. 
• You must answer the questions i...
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Regulation of nitrogen fixation exam questions and answers
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Regulation of nitrogen fixation exam 
questions and answers 
nif cluster - Answer- a genetically linked and coordinately regulated group of operons 
encoding genes required for nitrogen fixation 
What is the EBP for nif genes? - Answer- NifA 
How does the activity of NifA differ from that of NtrC? - Answer- The unmodified form of 
NifA is active 
NtrC needs to be phosphorylated to be active 
Under what 2 conditions does nif transcription occur? - Answer- 1) Only in the absence 
of a fixed nitrog...
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Regulation of nitrogen fixation exam questions and answers
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Regulation of nitrogen fixation exam 
questions and answers 
nif cluster - Answer- a genetically linked and coordinately regulated group of operons 
encoding genes required for nitrogen fixation 
What is the EBP for nif genes? - Answer- NifA 
How does the activity of NifA differ from that of NtrC? - Answer- The unmodified form of 
NifA is active 
NtrC needs to be phosphorylated to be active 
Under what 2 conditions does nif transcription occur? - Answer- 1) Only in the absence 
of a fixed nitrog...
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Regulation of nitrogen fixation Questions & 100% Verified Answers | Latest Update | Already Graded A+
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nif cluster 
a genetically linked and coordinately regulated group of operons encoding genes 
required for nitrogen fixation 
What is the EBP for nif genes? 
NifA 
How does the activity of NifA differ from that of NtrC? 
The unmodified form of NifA is active 
NtrC needs to be phosphorylated to be active 
Under what 2 conditions does nif transcription occur? 
1) Only in the absence of a fixed nitrogen source 
2) Only if oxygen concentration not high enough to damage nitrogenase 
2 
What are th...
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Test Bank for Microbiology: The Human Experience (Second Edition) By: John W. Foster; Zarrintaj Aliabadi; Joan L. Slonczewski All Chapters Covered
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Test Bank for Microbiology: 
The Human Experience 
(Second Edition) By: John 
W. Foster; Zarrintaj 
Aliabadi; Joan L. 
Slonczewski 
All Chapters Covered 
Chapter 01: Microbes Shape Our History 
MULTIPLE CHOICE 
1. Which of the following is NOT considered a benefit of microorganisms? 
a. nitrogen fixation c. synthesis of vitamins 
b. production of fermented foods d. causative agents of disease 
ANS: D DIF: Easy REF: 1.1 
OBJ: 1.1a Describe how we define a microbe, and explain why the definition i...
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Biotechnology |Nitrogen Fixation and Photosynthesis & Transport of Molecules in Plant Questions and Answers
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Biotechnology |Nitrogen Fixation and Photosynthesis & Transport of Molecules in Plant Questions and Answers
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Regulation of nitrogen fixation exam questions and answers
- Exam (elaborations) • 4 pages • 2024
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Regulation of nitrogen fixation exam 
questions and answers 
nif cluster - Answer- a genetically linked and coordinately regulated group of operons 
encoding genes required for nitrogen fixation 
What is the EBP for nif genes? - Answer- NifA 
How does the activity of NifA differ from that of NtrC? - Answer- The unmodified form of 
NifA is active 
NtrC needs to be phosphorylated to be active 
Under what 2 conditions does nif transcription occur? - Answer- 1) Only in the absence 
of a fixed nitrog...
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