How does a sea star eat mollusks?
What will be an ideal response?
A sea star forces its stomach out through its mouth and into the bivalve's shell. Acid and enzymes secreted by the stomach kill the mollusk and begin to digest it.
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The tall and short phenotypes in pea plants are examples of ____
a. polygenic traits b. continuous traits c. multifactorial traits d. discontinuous traits e. gene interaction
The transcribed, but not translated, sequence that is immediately upstream of the region that encodes the functional product is called the ________ region.
A. promoter B. leader C. trailer D. coding
A scientist is studying several areas along an elevation gradient. Her study involves prescribed burns (purposefully set, low-intensity fires) in the different areas, followed by a comparison of the type and abundance of organisms that colonize them over the next ten years. What scale best describes her study?
A. Ecosystem ecology B. Population ecology C. Physiological ecology D. Community ecology E. Organismal ecology
The progesterone receptor (PR) is a steroid hormone receptor and transcription factor. The protein SRC-1, which does not bind DNA by itself, can bind to PR and increase expression of genes regulated by PR. Based on this information, SRC-1 is best described as a(n)
A. specific transcription factor. B. coactivator. C. inducer. D. general transcription factor.