Why would a patient with a defect in the obese (ob) gene continue to gain weight while a patient with the normal gene would not? Assume they both eat the same diet and are the same height
What will be an ideal response?
The obese gene carries the instructions to make leptin, the fat-controlling hormone. A defect in this gene would lead to little leptin being made; thus, the brain of that patient continues to try to add to the fat stores by increasing appetite and slowing metabolism.
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Which of the following equations is the chemical reaction for cellular respiration?
A. C6H12O6 + 6O2 6CO2 + 6H2O B. 6CO2 + 6H2O C6H12O6 +6O2 C. CaSiO3 +CO2 CaCO3 +SiO2 D. C6H12O6 + 6CO2 6O2 + 6H2O
Leaf __________ in the fall is an adaptation for flowering plants to survive harsh winters in temperate
climates. a. desiccation b. photosynthesis c. abscission d. growth e. production
Radioactive isotopes are used in dating materials from the distant past. Which of the following statements about radioactive dating techniques is true?
A. It does not work well with fossil remains that have not absorbed radiation. B. It uses a technique in which the degree of radioactive decay is measured; the younger the rock the more radioactive decay. C. It gives exact ages of rock strata. (±1 year). D. It gives the general ages of rock strata. (±1 million years). E. It uses a technique in which the degree of radioactive decay is measured; the older the rock the more radioactive decay.
The antitoxin therapy for rattlesnake bite provides (artificial/innate/natural) immunity.
Fill in the blank(s) with the appropriate word(s).