Cilia and flagella are most directly involved in:
a. metabolism.
b. movement.
c. maintaining homeostasis.
d. muscle contraction.
e. cell signaling
B
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Mutations in genes that affect __________ may cause morphological shifts in a lineage. Fill in the blank(s) with the appropriate word(s)
Which of the following is not a characteristic of all living things?
A) They contain carbohydrates, proteins, lipids, and nucleic acids. B) They respond to stimuli. C) They are composed of multiple cells. D) They have adaptive traits.
Many species are held below the environmental carrying capacity by predation.
Answer the following statement true (T) or false (F)
Which of the following is the effect of El Niño?
A. More nutrient-rich cold water wells up along South America’s west coast B. Western Pacific waters cool C. Less rain in western South America D. Easterly trade winds weaken or reverse E. More rain in Australia