Transcription starts at a region of DNA called a(n)
a. sequencer.
b. promoter.
c. activator.
d. terminator.
e. transcriber.
B
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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.
This animal does not have a brain but rather
has a nerve net of interconnected neurons. This animal is
a. a planarian. b. an earthworm. c. a grasshopper. d. a sea anemone. e. more than one of these
Why are fossils from older species found deeper in the earth than those from more recent species?
A) Layers of sediments accumulate every year, covering older fossils in more layers. B) Older species were more likely to burrow underground. C) Modern species can swim better than older species. D) Older species were more likely to be trapped in sediments and form fossils than modern species.
You have been assigned to conduct a scientific study on the effects of four types of fertilizer on broccoli growth. You visit several broccoli farms to make observations and use these observations to find preliminary correlations and form hypotheses. To test your hypotheses, you set up five plots of broccoli-one plot for each fertilizer type plus a control plot, which is not fertilized. When you meet with your professor to discuss your progress, he tells you that your project is missing an important component of the scientific method. What is missing?
A. Testing the fertilizer in a natural setting on wild relatives of broccoli B. Setting up plots that receive more than one type of fertilizer C. Testing biotic factors such as herbivore abundance D. Using more than one plant species so your conclusions can be more broadly applied E. Replicating each fertilizer treatment in multiple plots