Hydrothermal vents Study guides, Class notes & Summaries

Chlorine and iodine are classified as - halogens Obligate aerobes can only live - when oxygen is present Microorganism found thriving in a the permafrost region of the Arctic are - pychrophiles Facultative halophiles - tolerate an elevated salt concentration in the environment Most bacteria prefer to grow at which pH range? - Most bacteria prefer to grow at which pH range? The spectrophotometer is used in microbiology to - indirectly measure microbial growth Pyrimidine dimers are formed i...

how many different types of hydrothermal vents are there? and what colors correct answers what are the four major features for defining life? correct answers bioentergetics, metabolism, information flow, evolution origin of respiration (generating energy from electrically charged membranes) correct answers energy flow (bioentergetics) RNS world (ribozymes) probably enzymes too correct answers metabolism (building marcromolecules) origin of DNA and natural selection correct answers i...

BIO 117 Exam 2 Latest Update Already Passed sexual fungal reproduction 1. plasmogamy 2. heterokaryotic mycelium 3. karyogamy heterokaryotic mycelium cells contain 2 haploid nuclei from parent (n+n) karyogamy fusion of nuclei from parents (2n) three domains of life bacteria, archaea, eukarya methods of gene exchange for bacteria 1. transformation 2. conjugation 3. transduction transduction -viruses/bacteriophages help to pass genetic information -required initial virus...

Biol 1023 Final Exam Questions and Answers 100% Pass **What gases did Miller and Urey simulate in their experiment to demonstrate the formation of organic molecules in a primitive Earth atmosphere?** - A) Oxygen, nitrogen, carbon dioxide, water vapor - B) Water vapor, hydrogen, methane, ammonia - C) Carbon dioxide, methane, oxygen, nitrogen - D) Nitrogen, oxygen, hydrogen, carbon dioxide - Explanation: Option B is correct. Miller and Urey simulated water vapor, hydrogen, methane, a...

Bis 2C, Pre-Lab #2 Bacteria and Archaea are often collectively referred to as prokaryotes because they lack a nucleus (pro=before, karyon=nucleus). But, as you can see from figure 2.1, they are not each other’s closest relatives. Because bacteria and archaea are so diverse, they can be difficult to characterize. However, when compared to eukaryotes, they have significant differences in their general biology including, reproduction, organization of genetic material, and a lack of membrane...

carl woese correct answers what scientist discovered the archael domain? 16 sRNA gene correct answers what gene sequence did Woese use to determine that archaea were evolutionary different from bacteria? false correct answers T/F: archaea are only found in extreme environments Asgard archaea correct answers what group of archaea are eukaryotes most closely related to? a hydrothermal vent system correct answers what environment was the first Asgard archaeon discovered in? electrica...

life began around ___ to ____ billion years ago on an _________ world with a thick, ____________ enriched atmosphere correct answers 3.8 to 4.0, anoxic, hydrocarbon anoxic correct answers without oxygen The alkaline hydrothermal vent hypothesis posits that life emerged at what ? correct answers the interface of alkaline H2 enriched fluids from unique hydrothermal vent systems and acidic CO2 enriched ocean waters the alkaline hydrothermal vents naturally form _____________ gradients that...

Biology 1023 Final Exam Questions and Answers Graded A+ Which environmental conditions are typically found near or within the hydrothermal vents of Lost City? - A) Intense heat - B) High pressure - C) Basic pH levels - D) Anaerobic conditions - Explanation: All of the above options are correct. These conditions are commonly observed in habitats near or within hydrothermal vents. What gases did Miller and Urey simulate to demonstrate the formation of organic molecules in a primi...

What is a characteristic of rhizospheres? a. The rhizosphere is where microbes that survive well in extremely acidic conditions reside. - Microbes that survive in extremely acidic conditions are called extremophiles. b. The rhizosphere is where microbes that survive well on humans reside. - Microbes that survive on the human body are part of the human microbiome. c. The rhizosphere is where microbes that survive well in the cold reside. - Microbes that survive well in the cold are psychrop...

What is a characteristic of rhizospheres? a. The rhizosphere is where microbes that survive well in extremely acidic conditions reside. - Microbes that survive in extremely acidic conditions are called extremophiles. b. The rhizosphere is where microbes that survive well on humans reside. - Microbes that survive on the human body are part of the human microbiome. c. The rhizosphere is where microbes that survive well in the cold reside. - Microbes that survive well in the cold are psychrop...