Plants have mitochondria
a. true
b. false
Answer: a. true
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Gymnosperms can be both monoecious and dioecious. What does dioecious mean?
a. a sister group to the angiosperms b. diploid egg and sperm join at fertilization to form a tetraploid seed c. male and female sporangia produced by different plants d. having two ovules per scale in the cone
The hormone ____ is involved in a positive feedback cycle that results in strong uterine contractions during labor
a. estrogen b. oxytocin c. cortisol
d. progesterone e. prolactin
Which of the following drugs is contra-indicated for treating children under the age of 12?
A) tetracycline B) gentamicin C) erythromycin D) amoxicillin
Which of the following examples would be most likely to result in macroevolution?
A) a change in a regulatory gene, which has a major and adaptive impact on morphology B) a point mutation deep within an intron C) DNA-DNA hybridization D) gene flow E) genetic drift involving a trait that seems to exhibit neutral variation