How you keep body temperature from dropping below its optimal level and how Anolis lizards
regulate body temperatures is different in some ways but not others. Explain.
What will be an ideal response?
Metabolism in both humans and lizards is temperature sensitive, and therefore temperature regulation
is related to maintenance, growth and reproduction. Humans mostly use receptors in the skin to send
signals to the brain, which elicits a response such as shivering. Humans can use behavior to also
regulate body temperature, for example, layering clothes. Lizard body temperatures vary with
environmental temperatures. The lizards use behavior to position themselves in sun or shade to
regulate body temperature. Presumably, the internal range of body temperatures is greater in lizards
than in humans. Nonetheless, both humans and lizards maintain body temperatures using homeostatic
mechanisms and both have mechanisms for compensating for temperatures that drop below optimal.
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Dosage compensation refers to the fact that:
A. the level of expression for a given gene is directly related to the number of copies of the gene. B. genes on the Y chromosome must be expressed at higher levels than would otherwise be the case because they are not homologous with genes on the X chromosome. C. genes on the X chromosome must be expressed at lower levels than would otherwise be the case because they are not homologous with genes on the Y chromosome. D. X chromosome genes must be regulated differently in males and females because members of one sex have 2 X chromosomes, whereas members of the other have only 1. E. None of these choices are correct.
A hypothetical automobile has 100 parts that are to be assembled by four workers. During the car's assembly, each worker constructs 25 parts individually, and then the 4 resulting components are assembled together
The manner in which the car was assembled is much like which cellular strategy? A) hierarchical assembly B) renaturation C) electrostatic assembly D) self-assembly E) assisted self-assembly
Animals, like fiddler crabs, that are busiest at dawn or dusk are termed:a
crepuscular. b. nocturnal. c. diurnal. d. lunar. e. asynchronous.
Some plants are not photosynthetic and must depend upon bacteria in their root nodules for nutrients.
Answer the following statement true (T) or false (F)