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FREE AND STUDY GAMES ABOUT BIO2CH27 EXAM
QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -118 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: NUTRITION: produce all or most of their own organic compounds
Answer:
Autotrophs Question 2: Archaea possess a number of features in common with the eukaryotic _____ and _____, suggesting common ancestry
Answer:
Nucleus, cytoplasm Question 3: MUTUALISTIC PARTNERSHIPS: larger community of nutrient exchangers (marine worm with no mouth, gut, or anus depends on bacteria inside it for food and waste recycling)
Answer:
Consortia Question 4: NUTRITION: must obtain organic molecules for both energy and carbon source
Answer:
Chemoheterotroph
Question 5: CELL SHAPE: spiral-shaped (flexible)
Answer:
Spirochaetes
Question 6: Prokaryotic cells are much _____ than eukaryotic cells
Answer:
Simpler
Question 7: Membrane lipids are formed with _____ linkages in archaea
Answer:
Ether Question 8: Methanopyrus grows in deep-sea thermal vents at 98 degrees C; this makes it a what?
Answer:
Hyperthermophile Question 9: CELL SHAPE: comma-shaped
Answer:
Vibrios Question 10: Determine whether or not a particular organism causes a specific disease
Answer:
Koch's postulates
Question 11: Named for blue-green or cyan color
Answer:
Cyanobacteria Question 12: The _____ _____ in archaea make them more resistant to heat and other extreme conditions
Answer:
Membrane linkages
Question 13: SURVIVING HARSH CONDITIONS: tough protein coat
Answer:
Endospores Question 14: SURVIVING HARSH CONDITIONS: found in some Gram positive bacteria
Answer:
Endospores Question 15: The enzyme _____ converts inorganic nitrogen gas (N2) into ammonia (NH3) in nitrogen fixation
Answer:
Nitrogenase Question 16: GRAM STAIN: cells are stained pink
Answer:
Gram negative
Question 17: Composed of polysaccharides, protein, or both; secreted from cells
Answer:
Mucilage
Question 18: What are the functions of mucilage?
Answer:
Evade host defenses, hold colony together (biofilms; dental plaque) Question 19: Ingrowths of plasma membrane that increase surface area for photosynthesis
Answer:
Thylakoids Question 20: Photosynthetic bacteria abundant in fresh waters, oceans, and wetlands and on the surface of arid soils
Answer:
Cyanobacteria
Question 21: MOTILITY: move to _____ conditions
Answer:
Favorable Question 22: ARCHAEA KINGDOMS: methane producers, extreme halophiles, and some hyperthermophiles
Answer:
Kingdom Euryarchaeota Question 23: In archaea, _____ _____ are different from those in eukaryotes or bacteria
Answer:
Membrane linkages Question 24: Humans and their microbiomes are _____; diverse types of bacterial metabolism have co-evolved with humans
Answer:
Superorganisms Question 25: At least _____% of the genes present in the common human gut inhabitant
- coli came from other bacteria
Answer:
17% Question 26: Most plant and animal cells are between _____ and _____ micrometers in diameter
Answer:
10, 100
Question 27: GRAM STAIN: less peptidoglycan and a thin outer envelope of lipopolysaccharides
Answer:
Gram negative Question 28: NUTRITION: organisms that require at least one organic compound, and often more
Answer:
Heterotrophs
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