Mcb 3020 Study guides, Class notes & Summaries

Define thermodynamics - the branch of physics concerned with the relationships between heat and other forms of energy First law of thermodynamics - -The law of conservation of energy -Energy cannot be created nor destroyed in an isolated system. -Energy can only change forms Second law of thermodynamics - -Introduces the concept of entropy -stating that in any isolated system the entropy tends to increase over time Third Law of Thermodynamics - -No system can reach absolute zero -the ent...

Which of the following microscopes typically uses dyes or antibodies? (1) - Fluorescence microscope Prior to the work of ____________, scientists did not distinguish between members of the Archaea and the Bacteria. - Carl Woese The instrument that produces a bright image of the specimen against a dark background is called a (n) __________ microscope. - Dark field

Symbiosis - Describes two organisms living together, regardless of the outcome Amensalism - Type of symbiosis in which the product of one organism has a negative effect on another organism Ex: Antibiotics Cooperation - Positive but NOT obligatory interaction between species; symbiotic relationship in which each partner gets some benefit, but each partner can live independently

Microorganisms/Microbes - -Small living organisms that can't be seen by the human eye - diverse in form/funtion - inhabit every EVR that supports life - many single celled, some form complex structures, some multicellular - live in microbial communities Microorganisms/Microbes - - oldest form of life - major fraction of earth's biomass - surround plants and animals - affect human life (infectious diseases, food and water, soils, animal health, fuel) tools for studying microorganisms -...

List blood formed elements and describe their functions. - The major blood formed elements and their functions are as follows: -red blood cells: transport oxygen and carbon dioxide -platelets: essential for blood clotting -white blood cells (leukocytes): include a diverse group of cells involved in immunity, including following: ~granulocytes- characterized by the presence of granules in their cytoplasm and include neutrophils, eosinophils, mast cells, and basophils. ~Agranulocytes- cells...

Mcb 3020 Exam Questions With Verified Solutions A microbe is discovered living in an extreme environment near a deep sea vent. The microorganism lacks a nucleus and peptidoglycan in its cell wall, but it does have unusual membrane lipids. This species is most likely a member of the Domain - answerArchaea Disproves spontaneous generation - answerLouis Pasteur Generates the small pox vaccine - answerEdward Jenner Describes bacterial transformation - answerFredrick Griffith Determined the s...

MCB 3020 – FINAL Exam Questions With Verified Solutions Humoral immunity is mediated by - answerantibodies Cellular immunity is mediated by - answerT-cells Mechanical barriers - answer1) Skin 2) Mucous membranes 3) Tears 4) Respiratory tract Very few microorganisms penetrate skin True or False? - answerTrue What do tears contain? - answerLysozymes What kind of epithelium covers respiratory tract? - answerciliated epithelium Natural resistance (innate immunity) includes - answer1) C...

List tools used in genetic engineering and recombinant DNA technology - Some important Tools used are in silico analysis, DNA microarray analysis, gel electrophoresis, PCR and RFLP analysis Describe/ explain and define PCR - Technique that quickly and easily makes copies of even very small amounts of DNA Describe/ explain and define: Reverse Transcriptase - A RNA dependent DNA polymerase that synthesizes DNA based on an RNA template . Turns single stranded RNA into double stranded DNA

Which of the following is not true about archaeal ribosomes? - They may possess ribosome binding sites homologous to bacterial Shine-Dalgarno sequences. - They have similar antibiotic sensitivities to those of bacteria. - They are 70S like bacterial ribosomes. - All of these are true about archaeal ribosomes. - They have similar antibiotic sensitivities to those of bacteria. All of the following statements about the periplasmic space are true except: - It contains hydrolytic enzymes and b...

Mcb 3020 Exam Questions With Verified Solutions A microbe is discovered living in an extreme environment near a deep sea vent. The microorganism lacks a nucleus and peptidoglycan in its cell wall, but it does have unusual membrane lipids. This species is most likely a member of the Domain - answerArchaea Disproves spontaneous generation - answerLouis Pasteur Generates the small pox vaccine - answerEdward Jenner Describes bacterial transformation - answerFredrick Griffith Determined the s...