Because small quantities of powerful explosives can be hidden easily, a sensor that could detect trace amounts of illicit chemicals would be a useful tool. What animal sensory modality is exquisitely sensitive to minute quantities of airborne chemicals?
Honeybees have an incredible ability to distinguish thousands of different odorant molecules, using their large repertoire of olfactory receptors. A wide variety of different types of chemicals can be detected as odorants -- they simply require olfactory neurons with a receptor that can bind the chemical and transduce that stimulus into a receptor potential.
A. olfaction
B. taste
C. vision
D. hearing
E. touch
A. olfaction
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Which of the following factors is NOT a density-dependent regulator of population size?
a. competition for food b. limitation of nesting sites c. disease d. parasitism e. drought
What is the primary function of the sinoatrial node?
A. To increase or decrease blood pressure B. To supply the heart muscle with oxygen C. To open and close the heart valves D. To initiate the contraction of the heart
Which of the following correctly reflects the division of the history of life on Earth, from most inclusive to least inclusive?
A. epoch - period - era B. epoch - era - period C. era - epoch - period D. period - epoch - era E. era - period - epoch
Explain the significance of endospores
What will be an ideal response?