Which of the following is a proximate question in regards to animal behavior?
A. How does a male songbird learn the songs that attract females of his species?
B. When does a human male develop a deep voice?
C. Why does a gazelle leap to warn others in the herd when a predator is present?
D. Why do parents risk their lives for those of their offspring?
E. Why do crows work together to attack great horned owls?
A. How does a male songbird learn the songs that attract females of his species?
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As high energy electrons move through the photosynthetic pathway, they take part in many oxidation/reduction reactions
Starting at the beginning of the light-dependent reactions, list in the proper sequence the molecules involved in photosynthesis that are reduced by highenergy electrons. What will be an ideal response?
Sharks detect motion in the water or waves by their:a
lateral lines. b. electroreceptors. c. keen olfaction. d. sight. e. dorsal fin
A plant hormone may have different effects on target cells due to any of the following except ____________.
A. differences in location relative to the ground B. the integration of several hormonal signals in the tissue C. the action of a cell’s hormone receptors upon binding to the hormone D. different gene expression patterns triggered by the hormone E. the concentration of the hormone in the tissue
Small, finger-shaped projections of the plasmalemma are termed _______
A) flagella B) centrioles C) thick filaments D) microvilli E) cilia