The first multicellular organisms (algae) appeared about __________ billion years ago.
A. 1
B. 1.8
C. 3.5
D. 13
A. 1
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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.
Somatostatin is secreted by
a. pancreatic islet cells. b. the thyroid gland. c. the pituitary gland. d. the adrenal medulla. e. the adrenal cortex
The energy from catabolic reactions is used to produce
a) ADP. b) ATP. c) AMP. d) phosphate.
Viruses such as MS2 and Qß pack additional information into their genomes through the use of overlapping genes.
Answer the following statement true (T) or false (F)