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Bala inherited a diabetes gene and an obesity gene from her father, each gene near one end of the same chromosome (chromosome 7). Her mother’s chromosome 7 had healthy alleles. If Bala produced an egg cell, which alleles would it carry? A. Any of (a), (b) or (c) is possible. […]

Question 1: ATP as the energy currency of the cell ATP (adenosine triphosphate) has been called the energy currency of the cell. Briefly outline the cycle by which energy is stored in and released from ATP. Explain the importance of the phosphate bond to this series of processes. Be prepared […]

Q. Birds and mammals have a four-chambered heart, with two ventricles and two atria, but other modern reptiles have a three-chambered heart, with just one ventricle. Paleontologists debate whether dinosaurs had a typical “reptile-like” heart or a “birdlike” heart. Long-necked sauropod dinosaurs could have had unusual circulatory demands because their […]

Green indicates kinases that phosphorylate tyrosines in a poly(tyrosine-glutamate) substrate; “blue kinases” phosphorylated the same substrate weakly; “yellow kinases” could not phosphorylate this substrate. a. What correlation do you see between primary structure and substrate preference? b. If you could see the 3D structures for all of these kinases, hypothesize […]