When two different populations in a community benefit from their relationship with each other, the result is called
A) herbivory.
B) mutualism.
C) parasitism.
D) competition.
Answer: B
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DTC genetic tests are (select all that apply):
A. regulated by the federal government. B. based on stringent scientific evidence for the relationship between particular genes and disease. C. accompanied by consultation with medical professionals who help consumers understand the results of their tests. D. problematic because the link between genotype and risk may be exaggerated for marketing purposes. E. None of the above.
Which of the following statements is NOT true of Chondrichthyans?
A. They have internal fertilization. B. They were the first vertebrates to develop teeth. C. Their buoyance is maintained partly by the oil in their livers. D. They are color blind. E. Their teeth are composed of dentine and enamel whereas the scales are made of chitin.
Which of the following are classified as gonadotropins?
a. FSH and LH b. TSH and LH c. ACTH and FSH d. GH and LH e. ADH and oxytocin
Which is false about Rapid Eye Movement (REM) sleep?
-It is the last sleep state in the adult's 90 minute sleep cycle -One's EEG shows brain activity similar to wakefulness -The amount of REM sleep that takes place in a 90 minute sleep cycle remains constant throughout the night (meaning that in each stage, 20% of sleep is REM) -Most dreaming activity is associated with this stage