Which hormone is responsible for the development of female secondary sex characteristics?
a. testosterone
b. estrogen only
c. progesterone only
d. estrogen and progesterone
e. human chorionic gonadotropin
ANSWER: b
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Which form of reproduction in protists is associated with a protective, resting cyst stage?
a. transverse binary fission b. longitudinal binary fission c. sexual reproduction d. budding
What is the definition of a species cluster?
a. a group of closely related species with a common ancestor b. a group of species that developed host races c. a group of species that exhibit polyploidy d. a group of totally unrelated species living in a common habitat e. when allopatric and parapatric speciation occur together
In photosynthesis, carbon dioxide enters the leaf of a plant through its open stomata
Indicate whether the statement is true or false
Two molecules react to produce two products, one of which is water. What type of reaction is likely to be involved?
A) a decomposition reaction B) a hydrolysis reaction C) an exchange reaction D) a synthesis reaction E) The answer cannot be determined from the available information.