We should care about loss in biodiversity in the populations of other species because of
A) biophilia.
B) potential loss of medicines and other products yet undiscovered from threatened species.
C) potential loss of genes, some of which may code for proteins useful to humans.
D) the risk to global ecological stability.
E) All of the options are correct.
Answer: E) All of the options are correct.
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Genes for regulatory elements, such as creb, were found to be important in animal learning. Which of the following would increase the probability that such an element is studied throughout the animal kingdom?
A) its unique sequence in Drosophila B) the finding that creb is highly conserved C) the number of repeats of the creb gene D) the interaction of creb with cAMP E) the finding that creb activates odor perception
the circular muscles which control the movement of materials from one digestive system structure to the next are called
What will be an ideal response?
The correct sequence of sensory processing is _____
A) sensory adaptation ? stimulus reception ? sensory transduction ? sensory perception B) stimulus reception ? sensory transduction ? sensory perception ? sensory adaptation C) sensory perception ? stimulus reception ? sensory transduction ? sensory adaptation D) stimulus reception ? sensory perception ? sensory adaptation ? sensory transduction
Future kidney cells and heart cells can differentiate into their respective specialized cell types because
A. they possess different genes. B. they utilize different transcription factors. C. they express different genes and utilize different transcription factors during development. D. they express a different set of genes during development. E. they arise from different embryonic stem cells.