Repressor Studienführer, Klassennotizen & Zusammenfassungen

Biology 1000 – Principles of Biology ( BioS 115 Core II: Genetics) Exam Study Guide 2024/2025. Review discussion about Breast Cancer Breast Cancer (BRCA1 and BRCA2) c. Provides instructions for making a protein that acts as a tumor suppressor d. Prevents cells from growing and dividing e. Accounts for 30-40% of families with breast cancer cases Penetrance and BRCA a. Refers to the risk of developing breast and ovarian cancer b. A reliable estimate of penetrance is crucial for medical co...

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...

Exam 1 LMR questions and answers Draw out medically important bacteria Lac operon sequence lacl, codes for repressor, C-P-O, ZYA Example of a isoform tropomyosin, an actin filament binding protein 3 functions of RNAi naturally in body proliferation, differnetiation, apoptosis What is miRNA double stranded RNA with guide sequence, binds to mRNA and RISC to form RISC complex to degrade mRNA for gene regulation What is RISC RNA induced sil...

BIO lab exam 2 TAMU (2023/2024) Rated A+ Coding regions sequences of DNA that serve as instructions for making proteins (1-2% of human DNA) Non-coding regions Human DNA that contains STRS and are responsible for regulatory functions ( DNA transcription 98-99% ) What are STRs? short tandem repeats; unique repetition of nucleotide patterns. Differentiate one person from another. What is a DNA profile? a specific pattern of DNA attributes that is obtained in the lab and can be used to identify a...

Biology Chapter 18 Practice Test 44 Questions with Verified Answers In the case of E. coli, the bacterium may need to synthesize tryptophan, or its host, a human, may supply all the tryptophan it needs. Why do both bacteria and humans need tryptophan? A) It is an important enzyme in the glycolysis pathway. B) It is one of the 20 amino acids used by all organisms to synthesize proteins. C) It is an important constituent of cell walls in both humans and bacteria. D) Tryptophan induces the ...

Biology Practice Test 4|50 Questions with Verified Answers 1) Which of the following is the best modern definition of evolution? A) descent with modification B) change in the number of genes in a population over time C) survival of the fittest D) inheritance of acquired characters - CORRECT ANSWER A 2) Which statement about the beak size of finches on the island of Daphne Major during prolonged drought is true? A) Each bird evolved a deeper, stronger beak as the drought persisted. B)...

Explain the concepts of penetrance and expressivity Penetrance is the percentage of cases in which a certain phenotype is expressed. There are two types: i. Complete Penetrance: when 100% is correlated to the genotype. So, all express the same thing. ii. Incomplete: this is when some are identical, and others are different. Penetrance= # with genotype showing phenotype x 100 # with the genotype Expressivity is the type or degree to which a penetrant gene ( the genes carrying the mutatio...

the calvin cycle reactions are dependent upon a supply of carbon dioxide, NADPH, and ATP which cofactor is involved in the Calvin cycle reactions? NADP+ segments of DNA that are not part of the gene are called introns which of the following is not true of ribosomes they bind only one type of amino acid which part of an operon is incorrectly matched with its function? regulator--binds to the repressor protein cells of the ground tissue system are called parenchyma, collenchyma, and sclerenc...

Regulatory genes are genes whose products control the transcription or translation of other genes correct answer: True In bacterial operon, promoter is bound by regulator protein to regulate transcription correct answer: False A repressible gene should be under control by a repressor correct answer: False For a gene under negative control, the regulator protein is a repressor correct answer: True For a gene under positive inducible control, regulator protein is a activator and no...

The calvin cycle reactions are dependent upon a supply of - Answer-carbon dioxide, NADPH, and ATP Which cofactor is involved in the Calvin cycle reactions? - Answer-NADP+ Segments of DNA that are not part of the gene are called - Answer-introns Which of the following is not true of ribosomes - Answer-they bind only one type of amino acid Which part of an operon is incorrectly matched with its function? - Answer-regulator--binds to the repressor protein Cells of the ground tissue s...