Give some examples of how humans thermoregulate. What will be an ideal response?
Concepts to Consider: Skin receptors are sensitive to body temperature changes; they send
information to the hypothalamus, which is the temperature control center. Nerves send a signal to the
muscles to shiver, increasing the body temperature. When the body temperature is increased, sweat
glands transfer heat to the environment by the evaporation of sweat. Also, blood vessels dilate in the
skin to release heat to the surface. When the body is cold, vessels in the skin constrict to reduce heat
loss.
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DNP (2,4-dinitrophenol) is an effective weight-loss agent that was used in diet pills in the 1930s
It has since been removed from the market (though it is available online) because of serious side effects such as fever, cataracts, rashes, and sometimes death. DNP inserts into the inner mitochondrial membrane and shuttles protons between the intermembrane space and the matrix. Based on this information, which of the following might you predict? What will be an ideal response?
Which carbon reservoir contains the most carbon?
a. atmosphere
b. biomass on land c. lakes d. oceans e. soil
An excitatory postsynaptic potential
a. is only one of several types of graded potential. b. has a hyperpolarizing effect. c. will drive the membrane away from its potential. d. is summed with an inhibitory postsynaptic potential at the input zone of a neuron in a process known as synaptic integration. e. is none of these.
An Hfr cell can initiate chromosome transfer from one E. coli to another
Indicate whether the statement is true or false