Sharks excrete a(n) small volume of dilute urine. Indicate whether the statement is true or false
False - large
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Collagens are associated with which of the following types of cellular junctions?
A) gap junctions B) tight junctions C) plasmodesmata D) adhesive junctions E) none of the above
Toll-like receptors (TLRs) bind molecules on pathogens. Why is this helpful to the immune response?
A. It provides a highly specific response to very small and highly unique areas on an individual pathogenic microbe, providing the most specific and selective response possible. B. It provides a general response to broad categories of molecules/cells that should NOT be in our system, as we don't have these molecules on our own cells. C. These secreted molecules help bind pathogens and then direct them to receptors on the immune system cells that are best capable of eliminating them from our systems. TLRs are delivery mechanisms for the immune responses. D. TLRs are capable of directly lysing (destroying) the microbes, helping our immune responses by eliminating pathogens.
What does the Nernst equation allow us to do?
A. Predict the function of a specific type of neuron. B. Calculate the equilibrium potential for an ion. C. Use a computer program to model axonal transmission. D. Calculate the magnitude of depolarization during an action potential.
The observation that SNPs account for most of the differences in the coding regions between the human and
chimpanzee genomes suggests that ____. a. the two genomes are too different to suggest an evolutionary relationship b. Neanderthals descended directly from chimpanzees c. small changes in amino acid sequences account for big differences in phenotype d. most of the differences in phenotype are due to DNA sequence changes e. humans descended directly from chimpanzees