In eukaryotes, activator proteins bind to ____________; generalized transcription factors bind to ____________
A. promoters; terminators
B. DNA polymerases; RNA polymerases
C. promoters; enhancers
D. terminators; RNA polymerases
E. enhancers; promoters
Answer E
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Behavioral traits are useful in differentiating species because behaviors ____
a. are never genetically determined b. related to mating may create prezygotic isolation c. of fossilized specimens are easy to infer d. are independent of morphological characteristics e. are always learned
How does the digestion and absorption of fat differ from that of carbohydrates?
A. Processing of fat does not require any digestive enzymes, whereas the processing of carbohydrates does. B. Fat absorption occurs in the stomach, whereas carbohydrates are absorbed from the small intestine. C. Fat must be partially digested by bacteria in the large intestine before it can be absorbed, which is not the case for carbohydrates. D. Most absorbed fat enters the lymphatic system, whereas carbohydrates directly enter the blood. E. Carbohydrates need to be emulsified before they can be digested, whereas fats do not.
The collarbone is the
a. hyoid. b. patella. c. scapula. d. clavicle. e. phalanx.
Nutrients are often transformed and cycled by oxidation-reduction reactions that can change the chemical and physical characteristics of the nutrients.
Answer the following statement true (T) or false (F)