BIO 117 Exam 2 | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+

BIO 117 Exam 2 | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+ sexual fungal reproduction Correct Answer: 1. plasmogamy 2. heterokaryotic mycelium 3. karyogamy heterokaryotic mycelium Correct Answer: cells contain 2 haploid nuclei from parent (n+n) karyogamy Correct Answer: fusion of nuclei from parents (2n) three domains of life Correct Answer: bacteria, archaea, eukarya methods of gene exchange for bacteria Correct Answer: 1. transformation 2. conjugation 2 3. transduction transduction Correct Answer: -viruses/bacteriophages help to pass genetic information -required initial virus to be successful then a later virus to be unsuccesful -virus acts as intermediary conjugation Correct Answer: -direct contact and DNA sharing between cells -pili structures - formation of a tunnel between 2 cells so DNA can pass transformation Correct Answer: -DNA from environment is taken in and used -useful in DNA technology phototrophs Correct Answer: source of energy is sunlight chemoorganotrophs Correct Answer: source of energy: - organic molecules 3 chemolithotrophs Correct Answer: source of energy: - inorganic molecules autotrophs Correct Answer: source of C-C bonds: - self-synthesized from CO2, CH4, or other simple molecules heterotrophs Correct Answer: source of C-C bonds: - from molecules produced by other organisms extremophiles Correct Answer: bacteria/archeae that live in extreme habitats: -hydrothermal vents -acidic conditions (pH < 1) -under antarctic ice -water 5-10 times saltier than seawater food produced by bacteria Correct Answer: - vinegar- acetic acid bacteria - Limburger cheese- brevibacterium 4 - pickles, sauerkraut, yogurt- lactic acid-fermentation Why study protists? Correct Answer: -critical to understand evolution of plants, fungi, animals -impact on human health welfare -ecological imp According to this phylogenetic tree the entirety of protist form a ______ group. Correct Answer: Why are "protists" a ________ group ? Correct Answer: what evolved in protists Correct Answer: earliest euk single celled organism w/ -mitochondria -nucleus w endomembrane syst -cytoskeleton -no cell wall. endomembrane syste