A researcher is working to generate a new cancer drug. Thus far, he has identified a compound that can reduce the size of tumors in the lung. However, in order for the drug to work, the lung tumor has to be small. In addition, the tumor cannot have metastasized (spread to other areas of the body). Furthermore, he knows that the drug acts to prohibit the signaling from one tumor cell to another
tumor cell. Given the above information, this new drug prohibits:
A. synaptic signaling between tumor cells.
B. autocrine signaling between tumor cells.
C. paracrine signaling between tumor cells.
D. endocrine signaling between tumor cells.
C. paracrine signaling between tumor cells.
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Many male insects have specific structures (intromittent organs) that allow transfer of sperm internally to a female's reproductive tract
These structures have a specific morphology that only fits into a female's reproductive tract of the same species, and results in internal fertilization. Having the lock-and-key fit also provides a A. pre-zygotic isolating mechanism. B. post-zygotic isolating mechanism.
A new treatment for burns involves using skin biopsies to generate ____________________, which are sprayed onto the burned area and form a new layer of skin
Fill in the blank(s) with correct word
Genomic imprinting is an example of epigenetics
__________________ Indicate whether the statement is true or false.
Natural selection ________.
A) results in evolutionary adaptation B) is a very rare phenomenon C) does not affect allelic frequencies D) prepares organisms for future changes in the environment