Cmmb midterm - Study guides, Class notes & Summaries

Midterm 1 - CMMB 411B-DNA - correct answer - 10.5 bp per turn - Anti-parallel strands (5'->3' opposite) - Right handed helix - Major/minor grooves 35.7 A - correct answer B-DNA Helix pitch 10.5 - correct answer B-DNA bp per turn 34.3 degrees - correct answer B-DNA twist angle (degrees) 20 A - correct answer B-DNA helix diameter 3.4 A - correct answer B-DNA axial rise per bp A-DNA - correct answer DNA present in bacterial spores, or dehydrated DNA also in tRNA an...

CMMB 343 - Midterm Question and answers correctly solved CMMB 343 - Midterm Transformation - correct answer one of three processes that lead to horizontal gene transfer, in which genetic material passes from one bacterium to another cells able to take up DNA are referred to as - correct answer competent natural competence - correct answer certain bacteria have specific proteins to take up external DNA eletroporation - correct answer an electric pulse can use to create temporary...

CMMB 403 Midterm 1 Question and answers rated A+ CMMB 403 Midterm 1 Stages of Early Embryogenesis - correct answer 1. Fertilization 2. Cleavage 3. Gastrulation 4. Organogenesis 5. Larval Stage 6. Gametogenesis Patterns of Cleavage - correct answer 1. Holoblastic: complete cleavage 2. Meroblastic: Incomplete cleavage Germ cells - correct answer Precursors of sperm and egg that are set aside early in development (do not form from embryonic germ layers) Ectoderm (outer laye...

CMMB 403 Midterm Two major changes of the mid-blastula transition - correct answer 1. Changes in the length of the cell cycle 2. Activation of zygotic genes Key aspects of gastrulation (3) - correct answer 1. Blastula turns into gastrula 2. Formation of blastopore 3. Germ layers move into their final positions What is a blastopore - correct answer Opening of central cavity in embryos Key aspects of organogenesis (3) - correct answer 1. Gastrula turns into neurula (once you see ...

CMMB 343 - Midterm 2What are 4 DIRECT methods of measuring bacterial growth? - correct answer 1. Flow methods: Coulter counter, flow cytometry 2. Microscopic counts: Counting chambers 3. Plate counts 4. MPNs Coulter counter - correct answer electronically scans a volume of fluid as it passes through a tiny pipette. The microbes passing through disrupt the electrical current, which is detected. Flow cytometry - correct answer Similar to coulter counter, except it counts disruptions of...

CMMB 343 - Midterm Question and answers correctly solved 2024 Transformation - correct answer one of three processes that lead to horizontal gene transfer, in which genetic material passes from one bacterium to another cells able to take up DNA are referred to as - correct answer competent natural competence - correct answer certain bacteria have specific proteins to take up external DNA eletroporation - correct answer an electric pulse can use to create temporary holes in the cellu...

CMMB 403 midterm 2 Question and answer rated A+ 2024 Capacitation - correct answer changes to the sperm after it enters the female to be able to fertilize the egg. takes 6 hours to become competent. Sperm become hyperactivated to be able to penetrate the cumulus and the zona p. what is the acrosome - correct answer tip of sperm. releases enzymes to degrade the zona pellucida to allow the sperm DNA to enter. exocytosis of the enzymes to allow contact with the egg How does the sperm bind ...

CMMB 343 midterm Question and answers 100% correct 2024Name for Conan the bacterium - correct answer Deinosuchus radiodurans Who was the first to describe microbes? - correct answer Robert Hooke Who was the first to describe bacteria? - correct answer Antoni van Leeuwenhoek What are the 4 categories of taxonomy that Ferdinand Cohn made? - correct answer 1. Sphaerobacteria 2. microbacteria 3. descmobacteria 4. spirobacteria What is the gold standard for species definition? - c...

CMMB 403 Midterm 1Describe the RTK signal transduction pathway when activated by the FGF ligand FGF ligand dimerizes RTK receptor. Receptor is phorphorylated and attracts adaptor/GEF. GEF begins phosphorylation cascade: GEF to Ras to Raf to Mek to Erk to TF. TF transcribes gene Describe the JAK-STAT pathway when activated by FGF FGF ligand dimerizes RTK. JAK2 proteins cross-phosphorylate. Both JAK2s phosphorylate a STAT5 (which is a cytoplasmic tyrosine kinase). The STAT5s dimerize and tr...

CMMB 343 - Midterm 2 Question and answers correctly solved 2024 Storage compounds - correct answer black dots, carbon polymers (glycogen), PHB. PHA. Phosphatee granules Sulfar gobules Minerals Magnetosomes - correct answer Black circlees ontop of eeachothr Magnetic iron allow cell magnetaxis - migrate to magnetic poles gas vesiclees - correct answer Little diamond shaped things side by side bouyancy regulators Importance of internal membrane - correct answer invaginations ins...