ineer a SIRT3 gene that is identical to the normal gene except that a single nucleotide has been deleted from the 5′ end of the second exon of the gene; the deletion does not affect splicing. The researchers introduce this gene into normal stomach cells to determine how the primary AND tertiary structures of the protein expressed from the engineered SIRT3 gene will compare with the protein expressed from the normal SIRT3 gene in these cells. Predict the results of this experiment. The researchers claim that the data in Figure 3 provide evidence that the stomach cancer cells perform fermentation to a greater extent than do normal stomach cells. Provide reasoning to justify the claim. Based on the information provided, predict the effect on the ratio of NADH/NAD+ in the cells treated with the compound that blocks the electron transport chain compared with similar cells not treated with the compound.

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

You will create a molecular clock model for an arthropod gene. follow these guidelines to make your model: . your timeline will span from 90 million years ago to the present. the common ancestor in your model is an arthropod that lived 90 million years ago. the gene that you'll track codes for a protein in the species venom . the dna sequence youll track contains 10 nitrogen bases. you can choose the order of the bases and where the mutations occur. this gene mutates at a rate of approximately 0.76 base pairs every 17.1 million years. to build your model,/ calculate the estimated time period it takes for 1 base pair to mutate. the first time period will only show the common ancestor. at the beginning of the second time period, three lineages will diverge from the common ancestor, each with a different mutation in their gene sequences. the first and third descendant species will survive for the rest of the timeline. the second descendant species was extinct 50 million years ago. calculate how long it will take for one full base pair mutation to occur. explain your reasoning by constructing a mathematical equation

Which of the following describes what can happen to an enzyme as temperature rises