BIO 30 (SJSU) Exam 1 Questions With Answers Graded A+ Assured Success

You set up an experiment with yeast grown on lots of food (glucose) vs. very little glucose. Would you expect to see differences in the amount and make-up of tRNA between the two groups? - ️️No Your group is assigned to repeat Avery's experiments in BIOL 30 lab. You are given plates of R cells and tubes of the extracted S factor. In which of the following cases would you see the R cells be transformed into S cells. - ️️All of the above EXCEPT when you add S factor + DNAase Which biomolecule can encode the most unique sequences for a given length? - ️️Protein Based on Griffith's experiments, where can you conclude the heritable material is located? - ️️Loosely attached to the cell wall/membrane Which of the following could be used as a negative control in the Avery experiments? - ️️Buffer solution only Based on the results of Avery's experiments, which biomolecule most likely constitutes the heritable material? - ️️DNA In Table 1.2, which biomolecule was more likely to be found inside the cell? - ️️DNA Which DNA base pairs contain two rings? - ️️Adenine and Guanine The nitrogenous bases are held together by which kind of bonds? - ️️Hydrogen bonds What method of replication did Meselson & Stahl determine was used in DNA replications? - ️️Semi-conservative If protein is the heritable material, how many unique sequences of 10 amino acids are possible? - ️️20¹⁰ If DNA replication was conservative, after one generation how many bands in the Meselson & Stahl experiments would you expect? - ️️2The following image is of DNA bands following 2.5 generations as well as a quantification of the density of both bands. Which of the bands contains the most DNA? - ️️A (thicker, darker band) In an adult, the gene encoding the fetal hemoglobin protein is most likely to be - ️️Hypermethylated What characteristics are important in the type of RNA that serves as the template for protein translation? - ️️A and C only (Huge turnover rate and variety sizes) If DNA is the heritable material, how many unique 10 DNA base pair sequences are possible? - ️️4¹⁰ Which form(s) of RNA are the most stable / long-lasting? - ️️rRNA When comparing RNA from yeast and humans, which type of RNA do you expect to be the most similar? - ️️rRNA Under what conditions would you expect to find the highest levels of permease protein in E. Coli? - ️️High lactose levels in the environment