Firmicutes - Study guides, Class notes & Summaries

Which major body sites are heavily colonized by microbes? Are you born with these microbes? correct answers Exposed skin, oral cavity, and gastrointestinal tract are heavily colonized by microbes. Humans are not born with any microbes, colonization begins at birth via exposure. What are the common genera of bacteria found on the skin, in the throat, and in the intestines? correct answers The common bacteria found on the skin: Staphylococcus, Propionibacterium, and Corynebacterium. The comm...

What are some functions of the gut microbiome? - ANSWER-•Supports digestion •support epithelial homeostasis in the gut •Protect against pathogens •Facilitate development of the immune system •Functions as a multifunctional organ that provides metabolic traits not fully evolved in our genome: break down of plant polysaccharides, transformation of conjugated bile acids, synthesis of certain vitamins (i.e. vitamin K) •Postnatal colonization educates immune system so we become tol...

What are some functions of the gut microbiome? - ANSWER-•Supports digestion •support epithelial homeostasis in the gut •Protect against pathogens •Facilitate development of the immune system •Functions as a multifunctional organ that provides metabolic traits not fully evolved in our genome: break down of plant polysaccharides, transformation of conjugated bile acids, synthesis of certain vitamins (i.e. vitamin K) •Postnatal colonization educates immune system so we become tol...

Similarities between Archaea and bacteria -Prokaryotic cell - no nuclear membrane,one circular chromosome - 70S ribosomes - most have cell walls - some species stain purple and others end up red in the Gram stain Differences between Archaea and bacteria - Ribosomal RNA sequence data - Archaeal cell walls lack peptidoglycan (no N-acetyl muramic acid). - Archaeal cytoplasmic membrane lipids have branched chain fatty acids that may extend through the membrane. - The initial amino acid in protein s...

BIO 202 Exam 1 Questions With 100% Correct Answers Updated 2024/2025 (Graded A+) When was earth formed? - correct answer 4.55 billion years ago When did life on earth first appear? - correct answer 3.5 billion years ago What are the evolutionary mechanisms? - correct answer *Nonrandom mating *Migration *Genetic drift *Natural selection When does allopatric speciation occur? - correct answer when members of the same species become geographically separated When does sympatric speciation oc...

BIO 202 Exam 1 Questions With Correct Answers Updated 2024/2025 Graded A+ | Verified Answers. What are the properties of life? - correct answer *Cells and organization *Energy use and metabolism *Environmental response *Regulation and homeostasis *Growth and development *Reproduction *Biological evolution When was earth formed? - correct answer 4.55 billion years ago When did life on earth first appear? - correct answer 3.5 billion years ago What are the evolutionary mechanisms? - corre...

Why can prokaryotes be found almost anywhere? - Answer-They are able to switch their metabolic or respiration methods Describe mutualism - Answer-Both organisms benefit Describe amensalism - Answer-One organism is harmed, the other is unaffected Describe commensalism - Answer-one organism benefits and the other is unaffected Describe neutralism - Answer-both organisms are unaffected Describe parasitism - Answer-One organism benefits and the other is harmed What is the difference between a...

BIO 202 Exam 1 Questions With Correct Answers Updated 2024/2025 Graded A+. What are the properties of life? - correct answer *Cells and organization *Energy use and metabolism *Environmental response *Regulation and homeostasis *Growth and development *Reproduction *Biological evolution When was earth formed? - correct answer 4.55 billion years ago When did life on earth first appear? - correct answer 3.5 billion years ago What are the evolutionary mechanisms? - correct answer *Nonrando...

The cell wall of fungi is made of this polymer: correct answers Chitin This Fungal phyla reproduce exclusively through sexual reproduction: correct answers Basidiomycetes Fungi are master of polymer degradation (plant or animal) through the release of enzymes such as: correct answers Cellulases, laccases, proteinases, hemicellulases Cyst correct answers a cell with a protective wall Encystment correct answers the process by which a trophozoite becomes a cyst What taxonomic level d...

CMMB 343 - Final Exam Content 2024 Update| Questions with Verified Answers| Already Passed There are as many microbial cells in the human body as there are: human cells. However, ORFs in the microbiome outnumber ORFs in the human genome 95% of the microbes on humans live in: The GI tract (gastrointestinal tract). Different microhabitats support different... ...microbes, depending on temperature, pH, oxygen, etc. Each microhabitat is not homologous (even the same microhabitat can be di...