BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 19, Problem 9SA
Summary Introduction
Introduction:
Bacteria are single-celled and have a porous cell wall around their plasma membrane. A single circular double-stranded DNA is present in the cytoplasm.
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Students have asked these similar questions
What process brings nitrogen from the atmosphere into living system?
A. Methanogenesis
B. Denitrification
C. Anammox
D. Nitrogen fixation
E. Nitrification
Organic forms of nitrogen are converted to inorganic forms via what process?
a)photosynthesis
b)consumption
c)nitrogen fixation
d)decomposition
Solar radiation plays the most important role in the:
(A) Water cycle
(B) Nitrogen cycle
(C) Carbon cycle
(D) Oxygen cycle
Chapter 19 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 19 - ________ can have a genome of either RNA or DNA....Ch. 19 - Peptidoglycan is seen only in cell walls of...Ch. 19 - In _______, viral DNA becomes integrated into a...Ch. 19 - Prob. 4SACh. 19 - Prob. 5SACh. 19 - Prob. 6SACh. 19 - Prob. 7SACh. 19 - _______ are oxygen-releasing photoautotrophs. a....Ch. 19 - Prob. 9SACh. 19 - Vitamin-producing E. coli cells in your gut are...
Ch. 19 - Prob. 11SACh. 19 - Prob. 12SACh. 19 - Eukaryotes are most closely related to _______. a....Ch. 19 - Match each disease with the type of pathogen that...Ch. 19 - Prob. 15SACh. 19 - Prob. 1CTCh. 19 - Methanogens have been found in the human gut and...Ch. 19 - Review the description of Fred Griffiths...Ch. 19 - The antibiotic penicillin interferes with...Ch. 19 - Many compounds secreted by soil bacteria have been...
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- Figure 20.12 Which of the following statements about the nitrogen cycle is false? a. Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+) . b. Denitrification by bacteria converts nitrates (NO3) to nitrogen gas (N2) . c. Nitrification by bacteria converts nitrates (NO3) to nitrites (NO2) . d. Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.arrow_forwardPlants obtain ______ by taking it up from the air. a. nitrogen c. phosphorus b. carbon d. waterarrow_forwardAdding high levels of nutrients to a lake or inshore area wouldhave all of the following effects in that environment excepta) death of clams and crabs.b) increased growth of heterotrophic microbes.c) increased growth of photosynthetic organisms.d) increased levels of dissolved O2 .arrow_forward
- The process whereby nitrogen is brought into organic molecules is called ________. a. nitrification b. denitrification c. nitrogen fixation d. nitrogen cyclingarrow_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_forwardDecomposers a. break down dead organic matter in the environment by secreting digestive enzymes. b. break down living organic matter by secreting digestive enzymes. c. destroy living cells and then break them down with digestive enzymes. d. live in close association with another species.arrow_forward
- Which 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_forwardWhen biological oxygen demand (BOD) becomes very high:(a) The amount of dissolved oxygen increases(b) The concentration of microbes decreases(c) The water becomes anaerobic(d) The diversity of aquatic life flourishesarrow_forwardWhat microbes is highest in agricultural lands? A. Aerobic nitrogen fixing bacteria B. Anaerobic nitrogen fixing bacteria C. Aerobic heterotrophic bacteria D. Anaerobic heterotrophic bacteriarrow_forward
- Which of the following processes is/are used to fix atmospheric N2? a.bacterial action b.Haber process c.lightning d.transaminationarrow_forwardWe learned an ironic twist in the film called "The Other Inconvenient Truth." It was that a. agriculture creates more pollution than other sources, but we have to increase farming for the growing population b. that nitrogen in the soil is significant pollution, but if we don't use these fertilizers we will not have enough food c. That methane is produced by animals and by growing rice. So becoming vegetarian won't clear methane from the atmosphere. d. agriculture uses 70% of fresh water mined , causing a salt water pollution tooarrow_forwardAlmost all of the oxygen gas in today’s atmosphere ispresent as a result ofa. outgassing from volcanoes.b. aerobic respiration.c. endosymbiosis.d. photosynthesis.arrow_forward
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