Problems with Set-Point Theories of Hunger and Eating
What will be an ideal response?
(1) inconsistent with basic eating-related evolutionary pressures as we understand them
(2) major predictions of the set-point theories of hunger and eating have not been confirmed
(3) fail to recognize the major influences on hunger and eating of such important factors as taste, learning, and social influences
There is also the epidemic of obesity and people becoming overweight!
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What is the link between colored pigment molecules and other organic molecules?
Many traits of organisms, such as body form and color, are controlled by specific proteins, in turn controlled by the DNA genetic sequence of nucleotides. The genetic control of color, as in aphids, does not usually shift during the life of an organism. Researchers found that some specific aphid populations shift from an original red coloration to a green coloration. Genetics could be a factor, if some programmed shift could be identified. Environmental conditions of the living and nonliving habitat could be a factor. Either way, the chemistry and observed changes of pigment molecules in the aphids can be studied with the scientific method. A. All of the answer choices are correct. B. In the case of the aphids, the pigment molecules of bacteria are genetically passed on to the DNA of infected aphids. C. The DNA molecule genetic sequence regulates protein molecule function, which can change pigment structure that affects color. D. Pigment molecules are made up of all four of the other organic molecule groups. E. This one group of aphids can easily alter the pigment molecule structure by modifying its DNA nucleotide sequence and building new proteins.
The main difference between prophase I and II is that in prophase I
A. synapsis and crossing over occur. B. chromosomes coil. C. the nucleolus disappears. D. the nuclear membrane disappears. E. the spindle forms.
While shopping at your local drugstore, you stop at the blood pressure machine. It measures your blood pressure as 115/75 (good—that's healthy!). This number means that
A. arterial pressure is 115 mm Hg when the ventricles contract and 75 mm Hg in between ventricular contractions. B. arterial pressure is 75 mm Hg when the ventricles contract and 115 mm Hg in between ventricular contractions. C. arterial pressure is 115 mm Hg when the atria contract and 75 mm Hg in between atrial contractions. D. your sinoatrial node generates a 115 mV signal and your atrioventricular node generates a 75 mV signal. E. your sinoatrial node generates a 75 mV signal and your atrioventricular node amplifies this to a 75 mV signal.
Edward Jenner injected individuals with ____ lesions to protect them from ____
a. chickenpox; smallpox b. smallpox; chickenpox c. smallpox; cowpox d. cowpox; smallpox e. cowpox; chickenpox