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Which of the following statements about the nitrogen cycle is false? a. Nitrogen fixing bacteria exist on the root nodules of legumes and in the soil. b. Ammonification is the process by which ammonium ion (NH4+) is released from decomposing organic compounds. c. Denitrifying bacteria convert ni...

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  • bio 200
  • bio 200 final exam 2024 latest update correct
  • which of the following statements about the nitrog
  • the first forms of life on earth were thought to b

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Voorbeeld van de inhoud

BIO 200 FINAL EXAM|| 2024 LATEST
UPDATE|| CORRECT QUESTIONS &
SOLUTIONS||100% VERIFIED||GRADED A+

Which of the following statements about the nitrogen cycle is false?

a. Nitrogen fixing bacteria exist on the root nodules of legumes and in the soil.

b. Ammonification is the process by which ammonium ion (NH4+) is released from decomposing organic
compounds.

c. Denitrifying bacteria convert nitrates (NO3-) into nitrogen gas (N2).

d. Nitrification is the process by which nitrites (NO2-) are converted to ammonium ion (NH4+). - ANSWER
d. Nitrification is the process by which nitrites (NO2-) are converted to ammonium ion (NH4+).



The first forms of life on Earth were thought to be...

a. single-celled plants

b. large animals such as dinosaurs

c. insects

d. prokaryotes - ANSWER d. prokaryotes



Microbial mats...

a. are the earliest forms of life on Earth

b. all of the above

c. obtained their energy and food from hydrothermal vents

d. are multi-layered sheet of prokaryotes including mostly bacteria but also archaea - ANSWER d. are
multi-layered sheet of prokaryotes including mostly bacteria but also archaea



The first organisms that oxygenated the atmosphere were

a. anaerobic organisms

, b. hydrothermal organisms

c. all of the above

d. cyanobacteria - ANSWER d. cyanobacteria



The presence of a membrane-enclosed nucleus is a characteristic of....

a. prokaryotic cells

b. viruses

c. all cells

d. eukaryotic cells - ANSWER d. eukaryotic cells



Which of the following consist of prokaryotic cells?

a. bacteria and fungi

b. archaea and fungi

c. bacteria and archaea

d. protists and animals - ANSWER d. protists and animals



Plants use carbon dioxide from the air and are therefore called _____.

a. producers

b. decomposer

c. carbon fixers

d. consumer - ANSWER a. producers



Prokaryotes that obtain their energy from chemical compounds are called _____

a. auxotrophs

b. chemotrophs

c. phototrophs

d. lithotrophs - ANSWER b. chemotrophs



What event is thought to have contributed to the evolution of eukaryotes?

, a. glaciation

b. oxygenation of the atmosphere

c. volcanic activity

d. global warming - ANSWER b. oxygenation of the atmosphere



Which characteristic is shared by prokaryotes and eukaryotes?

a. mitochondria

b. nuclear envelope

c. cytoskeleton

d. DNA-based genome - ANSWER d. DNA-based genome



Which of these protists is believed to have evolved following a secondary endosymbiosis?

a. red algae

b. chlorarachniophytes

c. cyanobacteria

d. green algae - ANSWER b. chlorarachniophytes



An example of carbon fixation is ____

a. phagocytosis

b. decomposition

c. photosynthesis

d. parasitism - ANSWER c. photosynthesis



Which of the following statements about plant divisions is false?

a. All vascular plants produce seeds.

b. Seed plants include angiosperms and gymnosperms.

c. All nonvascular embryophytes are bryophytes.

d. Lycophytes and pterophytes are seedless vascular plants. - ANSWER a. All vascular plants produce
seeds.

, Which of the following statements about the moss life cycle is false?

a. The mature gametophyte is haploid.

b. The rhizoid buds to form a mature gametophyte.

c. The zygote is housed in the venter.

d. The sporophyte produces haploid spores. - ANSWER b. The rhizoid buds to form a mature
gametophyte.




Which one of these characteristics is present in land plants and not in Charales?

a. alternation of generations

b. flagellated sperm

c. phragmoplasts

d. plasmodesmata - ANSWER a. alternation of generations



Which of the following structures is not found in bryophytes?

a. root

b. chloroplast

c. a cellulose cell wall

d. sporangium - ANSWER a. root



The following structures are found on the underside of fern leaves and contain sporangia:

a. microphylls

b. rhizomes

c. sori

d. megaphylls - ANSWER c. sori



The dominant organism in fern is the ________.

a. gamete

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