Study guides, Class notes & Summaries

CMMB 343 Exam Study Guide with 100% Correct Answers | Verified | Latest 2024 Version How does phi6 penetrate the host cell? - because it is an enveloped phage, it uses the entry and uncoating model that relies upon spike-protein mediated endocytosis - once in the vesicles, it releases the viral particles and proteases digest the capsid coat, lysing the vesicle, and releasing the phage genome into the cytoplasm Which protein is the plug at the end of the tail tube in T4, preventing DNA from...

CMMB 343 lab Exam with 100% Correct Answers | Verified | Latest 2024 Version How to do BHI stant How to interpret results? Slanted BHI agar in a test tube Inoculate with the sample Will see growth on surface of agar if aerobic microbe. Fissures and cracks below surface if able to ferment. Deep shake culture Innoculate a loop of sample in molten agar and rotate in hands to mix. If fissures below the surface, can ferment. If no fissures, cannot ferment. Thioglycollate Medium Pipette som...

CMMB 343 Certification Exam with 100% Correct Answers | Verified | Latest 2024 Version 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 different ...

CMMB 403 Exam with 100% Correct Answers | Verified | Latest 2024 Version Mid-blastula transition (MBT) transition from synchronous to asynchronous cell division Blastocoel cavity during development around time of MBT, fluid-filled space; future anus (frog) and future mouth (sea urchin) Gastrulation rearrangement of cell layers during early embryo development; endoderm, mesoderm and ectoderm rearrangment Fate map used at specific stage of embryo development that can tell what cells will b...

New Year CMMB 403 Exam with 100% Correct Answers | Verified | Latest 2024 Version what does CRISPR use in order to generate changes in genome? is CRISPR forward or reverse genetics? - nuclease - 20 nucleotide RNA sequence to target specific sites in the genome - reverse genetics what is the role of Cas9 in CRISPR endonuclease that catalyzes double stranded breaks what are the two repair paths cells can use to repair double stranded breaks from CRISPRCas9 1. non-homologous end joining (NHE...

CMMB 403 Exam with 100% Correct Answers | Verified | Latest 2024 Version Which animal's development is chick development most similar to compared to other species?Most similar to humans than other species talked about in lecture (like amphibians and flies) What is the Nieuwkoop Centre (NC)? When does it emerge during embryo development?Centre that induces the formation of the organizer and later the dorsal mesoderm; emerges during the late blastula stage How does the fish organizer and ...

CMMB 413 Exam with 100% Correct Answers | Verified | Latest 2024 Version Define and describe cancer uncontrolled growth from the multistep accumulation of errors (ie. a genetic process) in genes involved in cell growth (ie control it) ie cell replication and cell death the first step can be inherited natural aging mechanism, cause of most "old age" deaths define neoplasia new growth define hyperplasia too much growth, looks like accumulation of normal looking cells on top of each othe...

CMMB 413 Exam with 100% Correct Answers | Verified | Latest 2024 Version Types of DNA Variation - single nucleotide variant (SNV) - small nucleotide insertion/deletion - dynamic mutations - microsatellite - copy number variation (CNV) Single Nucleotide Variants (SNVs) - most common type of sequence variation - >3 000 000 per person - can be benign or disease causing Initiation Codon (Start Codon) AUG (methionine) Stop Codons UGA, UAA, UAG 20 number of amino acids 64 number of dif...

CMMB 421 Practice Exam with 100% Correct Answers | Verified | Latest 2024 Version How many coronaviruses infect humans?Seven. How many genera are there based on genome homologies among coronaviruses?Three Can you name the two subfamilies of coronaviruses based on genome homologies?Alpha-CoV and Beta-CoV. What are the names of the three coronaviruses responsible for severe respiratory illnesses?SARS-CoV-1, SARS-CoV-2, MERS-CoV. Besides respiratory illnesses in humans, what are some import...

CMMB - Tutorial 6 Questions with complete solution CMMB - Tutorial 6 What is the zone of polarizing activity (ZPA)? - correct answer small region in the posterior part of the limb bud that acts as a signaling center and mediates anterior-posterior axis formation via limb patterning morphogens What is a morphogen? - correct answer a protein that defines different cell fates in a concentration-dependent manner. what does grafting of the ZPA to the anterior region of the limb bud do?...