True or false: Claudia had a 50-50 chance of inheriting the mutation on the BRCA1 gene because half of her DNA was inherited from her father, who carries the mutation
A. true
B. false
A
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Which of the following occurs when the cAMP-CAP complex binds the CAP site near the lac promoter?
A. Transcription rate decreases. B. Transcription rate increases. C. RNA polymerase binds to the promoter. D. RNA polymerase binds to the promoter and transcription rate decreases. E. RNA polymerase binds to the promoter and transcription rate increases.
Examples of accessory pigments for photosynthesis are
A. carotenoids, chlorophyll b, and chlorophyll a. B. chlorophyll a and carotenoids. C. chlorophyll a and chlorophyll b. D. mitochondria and chlorophyll a. E. chlorophyll b and carotenoids.
Which of the following is most likely to be responsible if, when your blood sugar level rose, the level went back down?
A) the use of the sugar for energy by your cells B) a homeostatic mechanism based on negative feedback C) type 2 diabetes D) a homeostatic mechanism based on positive feedback
Which of the following are magnifying lenses?
A) objectives B) oculars C) condensers D) prisms E) both objectives and the oculars