In any ecosystem, short food chains are more efficient than longer ones. Why is this so?
What will be an ideal response?
The shorter the food chain the less energy is wasted with every transfer from one trophic level to the next. These short chains are more efficient.
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True or false: If speciation is seen primarily as a result of genetic drift, then you would expect to see a bell-shaped distribution of most phenotypic characteristics
A. true B. false
Oligotrophic waters are usually hypoxic
Indicate whether this statement is TRUE or FALSE.
The N terminal in a protein
A. is the end characterized by a free carboxyl group. B. is the end characterized by a free amino group. C. is typically found in the middle of a protein. D. refers to that area of a protein that is bound to another protein.
The steroid hormone that coordinates molting in arthropods is _____
A) ecdysteroid B) glucagon C) thyroxine D) growth hormone