Which of the following is most limiting for plant growth, especially in relation to the plant's carbon uptake?
A. magnesium
B. calcium
C. phosphorous
D. potassium
E. nitrogen
Answer: E
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You have identified a molecule, molecule X, that can bind to the ATP binding site of a specific protein kinase, and prevent ATP binding. You are conducting a kinase assay using this protein kinase and a known substrate of this kinase, and have set up the reaction using the proper conditions and co-factors to allow for optimal protein kinase activity. If you add molecule X to the reaction, what do
you predict will be the outcome? A. The substrate will be phosphorylated normally in the presence of molecule X. B. Less phosphorylation of the substrate will be seen in the presence of molecule X. C. More phosphorylation of the substrate will be seen in the presence of molecule X.
A hummingbird that pollinates morning glory
flowers and nests in the crotch of an apple tree. The apple tree is not harmed or helped by the hummingbird. The relationship between the hummingbird and the apple tree is a
a. mutualism. b. commensalism. c. competition. d. parasitism. e. predation
Which characteristic of sensory receptors does phantom pain illustrate?
a. modality. b. sensory projection. c. sensory adaptation. d. proprioception.
Translational controls regulate:a
the activity of a protein end-product that is produced. b. the rate at which an mRNA molecule is translated. c. the rate at which an mRNA molecule is synthesized. d. the uptake of nucleic acids into the cell. e. the attachment of phosphate groups to polypeptides