Cmmb midterm Study guides, Class notes & Summaries
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CMMB 403 Midterm Question and answers correctly solved
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CMMB 403 Midterm Question and answers correctly solved 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) - ...
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CMMB 343 - Midterm 2 Question and answers rated A+
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CMMB 343 - Midterm 2 Question and answers rated A+ CMMB 343 - Midterm 2 
 
 
What 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 Si...
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CMMB 403 Midterm Question and answers correctly solved 2024
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CMMB 403 Midterm Question and answers correctly solved 2024 
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...
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CMMB 403 Midterm 1 Question and answers 100% correct
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CMMB 403 Midterm 1 Question and answers 100% correct CMMB 403 Midterm 1 
 
 
Describe 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...
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Midterm 1 - CMMB 411 Question and answers 100% correct 2024
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Midterm 1 - CMMB 411 Question and answers 100% correct 2024 
B-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 ...
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CMMB 403 Midterm 1 Question and answers already passed 2024
- Exam (elaborations) • 20 pages • 2024
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CMMB 403 Midterm 1 Question and answers already passed 2024Describe 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 tyr...
![CMMB 343 - Midterm 2 Questions with complete solution 2024](/docpics/4776382/65f8681e18173_4776382_121_171.jpeg)
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CMMB 343 - Midterm 2 Questions with complete solution 2024
- Exam (elaborations) • 49 pages • 2024
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CMMB 343 - Midterm 2 Questions with complete solution 2024 
What 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...
![CMMB 343 - Midterm 2 Questions with complete solution](/docpics/5235885/663bdafba12d6_5235885_121_171.jpeg)
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CMMB 343 - Midterm 2 Questions with complete solution
- Exam (elaborations) • 8 pages • 2024
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CMMB 343 - Midterm 2 Questions with complete solution CMMB 343 - Midterm 2 
 
 
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 in...
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CMMB 343 midterm Question and answers correctly solved
- Exam (elaborations) • 8 pages • 2024
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CMMB 343 midterm Question and answers correctly solved CMMB 343 midterm 
 
 
Name 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 sp...
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CMMB 403 midterm 2 Questions with complete solution
- Exam (elaborations) • 15 pages • 2024
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CMMB 403 midterm 2 Questions with complete solutionCMMB 403 midterm 2 
 
 
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...
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