Campbell Biology:Concepts & Connections Special Edition for NorthWest Arkansas Community College Biology 1544
8th Edition
ISBN: 9781269954020
Author: Martha Taylor, Eric Simon, Jean Dickey, and Kelly Hogan Jane Reece
Publisher: PEARSON C
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Chapter 32, Problem 3TYK
Summary Introduction
Introduction:
The bacteria help in providing nitrogen to the plant through various ways such as fixing the nitrogen to the soil from the atmosphere, by many
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Which of the following statements is/are TRUE for nitrogen fixation?
A. Process is performed by nitrifying soil bacteria.
B. Performed by bacteria present in the roots of all plants.
C. Reduction of N2 to NH3.
D. Consumes a negligible amount of ATP.
The conversion of ammonia to nitrate, known as _______________, is a two-step process performed by soil bacteria. (a) nitrogen fixation (b) nitrification (c) assimilation (d) ammonification (e) denitrification
Which of the following organisms improves nitrogen status in legumes?
Select one:
a.
Nitrate reductase
b.
Rhizobium
c.
Glutathione
d.
Mycorrhizae
e.
Pseudomonas
Chapter 32 Solutions
Campbell Biology:Concepts & Connections Special Edition for NorthWest Arkansas Community College Biology 1544
Ch. 32 - Fill in the blanks in this concept map to help you...Ch. 32 - Prob. 2TYKCh. 32 - Prob. 3TYKCh. 32 - By trapping insects, carnivorous plants obtain...Ch. 32 - Prob. 5TYKCh. 32 - Prob. 6TYKCh. 32 - Prob. 7TYKCh. 32 - Prob. 8TYKCh. 32 - Acid rain contains an excess of hydrogen ions...Ch. 32 - Prob. 10TYK
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- Which of the following statements is NOT as description of soil? A. Varying nutritional content. B. Phototropic microbes are found only on the top few centimeters. C. A homogenous layer of organic and inorganic material. D. The area around the plant soil usually has the highest microbial populations.arrow_forwardThe rhizosphere is:Group of answer choices A.) an area 1-2 mm in thickness adjacent to the root. B.) Bacteria that assists in the conversion nitrogen gas. C. ) Fungi that assists in the absorption of micronutrients. D.) All of the abovearrow_forwardWhich of the following factors would explain why there is a decreasing trend of microbial population from top to bottom? A. There is a shift in the condition form oxic to anoxic. B. All statements are acceptable. C. The soil particles become larger and not weathered. D. There is a decrease in the available nutrients.arrow_forward
- How can primary sewage treatment be used as a source of biofuel? a.Fermentation of BOD allows ethanol to be produced b.After primary treatment, the water is clean enough to use for hydrogen fuel c.Lipids that collect on the surface can be collected for biodiesel d.The trickling filters captures sludge that can be used for hydrogen fuelarrow_forwardRhizobium and Azotobacter are examples of nitrogen-fixing soil bacteria that are classified as a. chemolithotrophs. b. chemoorganotrophs. c. photoautotrophs. d. photoheterotrophs.arrow_forwardWhich essential chemical must be “fixed” by soil-dwelling bacteria before it can enter the food chain? a. Carbon b. Nitrogen c. Phosphorous d. Both a. and b.arrow_forward
- All of the following are true about soil microorganismsEXCEPT:(a) They never affect or change the physical characteristicsof their soil microenvironment.(b) They are considered to be a part of the soil.(c) All major microbial taxonomic groups can be found insoil (bacteria, fungi, algae, protists, viruses).(d) Species of the genus Clostridium contain important hu-man pathogens found in soil.(e) They are important as decomposers in the carbon andnitrogen cycles.arrow_forwardWhich of the following is a process of the nitrogen cycle that involves the conversion of nitrogen gas to ammonia? a.Nitrogen fixation b.Nitrification c.Ammonification d.Denitrificationarrow_forwardPlants obtain ______ by taking it up from the air. a. nitrogen c. phosphorus b. carbon d. waterarrow_forward
- Soil could be deficient in any of the following nutrients. If you had to supply one of these to the soil, which would be required in the smallest amount? Nitrogen 2. Potassium 3. Phosphorus 4. Sulfur 5. Ironarrow_forwardProvide 3 reasons why soil is an excellent source for microbes especially potential antibiotic producersarrow_forwardWhich of these occurs through symbiotic nitrogen fixation? a. The plant benefits from using an endless source of nitrogen. b. The soil benefits from being naturally fertilized. c. Bacteria benefit from using photosynthates from the plant. d. All of the above occur.arrow_forward
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