Phytochromes are pigment proteins that allow plants to detect light
Indicate whether the statement is true or 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 a cofactor of Kinase 1? A. Protein X B. Protein Y C. Protein Z D. Metal A E. Protein A
The hormone ______ produced by the _______ gland promotes sleep and inhibits gonadal activity
a. melatonin; pineal b. thyroxin; thyroid c. cortisol; adrenal d. insulin; islets of Langerhans e. oxytocin; hypothalamus
What happens to the ATP molecule after it has been used to do work?
A) It breaks down into carbon dioxide and water. B) It is split into two molecules of pyruvic acid. C) It loses a phosphate group and is converted to ADP. D) It is completely destroyed.
fertilization (when and egg and sperm meet)
What will be an ideal response?