Calcium is cycled most rapidly in terrestrial environments
Indicate whether the statement is true or false.
Answer: FALSE
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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 Y C. Protein Z D. Metal A E. Protein A
The _______ of a morphogen determines its effect on development
A. size B. homeodomain C. color D. concentration
Identify the role of oxygen in photosynthesis
A) It is split to form sugar. B) It is the final electron acceptor. C) It is a waste product in the light reactions. D) It is the initial electron releaser.
Contraceptive methods that rely on synthetic hormones
A) destroy fertilized eggs. B) prevent the implantation of a fertilized egg in the uterus. C) prevent ovulation. D) prevent the sperm and egg from meeting. E) kill sperm.