42) If the gene encoding the enzyme rubisco is mutated such that it is non-functional, the process that would be affected is the ability to... A) Make ATP B) Harvest photons C) Fix carbon D) Make 02 E) Make NADPH TU0 oto noie

When  regulatory protein binds to a mature mRNA in the cytoplasm and prevents it from binding to a ribosome, this is an example of: A) transcriptional control B) post-transcriptional control C) post-translational control D) epigenetic control E) translational control

How do repressors reduce transcription of an operon? A) recruit RNA polymerase to promoters B) block the ability of RNA polymerase to bind a promoter C) break phosphodiester bonds in the DNA D) inhibit the activity of the ribosome

95. The association of specific kinds of stomach cancer with blood type "O" is informative because   a)  people with blood type O have a genetic predisposition to all cancers.   b)  the evolution of H. pylori bacteria that can cause stomach ulcers and cancer to evolve surface proteins similar to those found on the surface of red blood cells of individuals with blood type "O".   c)  people with blood type "O" tend to live in areas with higher environmental contamination that causes stomach cancers.   d)  all of the above.   e)  none of the above.

Transcription of structural genes in an inducible operon ______. A) starts when the pathway’s substrate is present B) occurs continuously in the cell C) starts when the pathway’s product is present

5.) You have identified a mutant with the following phenotype:  a) Explain what has most likely happened to the chromatin in the mutant fly.  b) Which enzyme do you think has undergone a mutation in your mutant fly? There is more than one correct answer, just give one possibility.  c) How did the mutation in the enzyme you identified in part b affect the activity of that enzyme in order to see the phenotype we observed above?

8. A mutant that has a nutritional requirement for growth is an example of a(n) A) heterotroph B) auxotroph C) autotroph D) organotroph 9. In the Ames test the number of histidine auxotroph colonies growing on media lacking histidine when exposed to a potential chemical mutagen is. proportional to the likelihood that the chemical is mutagenic. A) Directly B) Inversely 10. Thymine dimers result from A) ionizing radiation B) nucleoside analogs C) non-ionizing radiation D) none of the above 12. RecA proteins are NOT required for homologous recombination? A) True B) False 13. Increasing genetic variability by the uptake of DNA from the environment is A) transduction B) transformation C) a mutation D) conjugation 14. Which of the following features are common to transformation, transduction, and conjugation? (1) unidirectional transfer of genes (2) incomplete gene transfer (3) homologous recombination (4) meiosis occurring in the recipient A) 1, 2, 4 B) 1, 2, 3 C) 3,4 D) 1,2 15. What is…

Take this strand of DNA and a) Transcribe it, then b) Translate it.TAC GCA GTA ACA GGC CCT ATCa)b)

Can you explain how to find what mutation 2 is with elaborate step?

Retrotransposons _______. A) are found only in animal cells B) use an RNA molecule as an intermediate in transposition C) generally move by a cut-and-paste mechanism