Animals learn to repeat certain behaviors based on certain factors. What are these?
What will be an ideal response?
Animals learn to repeat behaviors that provide food or mating opportunities and to avoid those that cause pain.
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The arabinose operon (ara) provides a particularly interesting example of _____ in that when arabinose is present in the environment, the operon is transcribed
A) positive control B) negative control C) push forward control D) reverse transcription E) positive translation
Trout and amoebas are both heterotrophs, and can inhabit similar environments (for example, a freshwater pond). However, these organisms are very different when it comes to their shape and size. Why?
A. Trout and amoebas utilize different sources of CO2. B. Trout and amoebas utilize different sources of C6H12O6 (or other organic compounds). C. Trout and amoebas utilize different sources of O2. D. Trout and amoebas have different metabolic pathways. E. Trout and amoebas are exposed to different environmental conditions, even when they inhabit the same pond.
Of the following features, which is the most widely shared in the animal kingdom?
A. protostome development B. radial cleavage C. molting of a cuticle or exoskeleton D. a body plan with symmetry E. a triploblastic embryo
Molecules that resemble fats but contain phosphate functional groups are called
A. steroids. B. polypeptides. C. phospholipids. D. nucleic acid.