What is the sex of the individual whose karyotype is pictured?
a. Male
b. Female
Answer: a. Male
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Kinases are enzymes that can phosphorylate (transfer phosphate groups onto) macromolecules such as proteins. A particular kinase, Kinase 1 is known to promote cell division. It promotes cell division by phosphorylating Protein X. Phosphorylation of Protein X activates Protein X. Once activated, Protein X stimulates the production of other proteins such as Protein Y and Z that directly promote cell division. In order to function, Kinase 1 requires the presence of Metal A. However, in the presence of Protein A, Kinase 1 is nonfunctional. From the description, what is considered the substrate of Kinase 1?
A. Protein X B. Protein A C. Protein Y D. Metal A E. Protein Z
Approximately ____ Y-linked genes have been discovered
a. 10 b. 20 c. 60 d. 80 e. 120
Enzymes catalyze reactions by stabilizing the ________ in the reaction
Fill in the blank(s) with the appropriate word(s).
________ used models to deduce the double helical shape of DNA.
A) Linus Pauling B) James Watson and Francis Crick C) Martha Chase D) Maclyn McCarty