When our ancestors were confronted by a saber tooth tiger, the ________ nervous system was responsible for "supercharging" their escape, while the ________ nervous system returned the body systems to normal after escaping the danger

Fill in the blank(s) with correct word


sympathetic; parasympathetic

Biology & Microbiology

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How many chambers does the frog heart have?

(a) one. (b) two. (c) three. (d) four.

Biology & Microbiology

Which statement best describes the relationship between a carpel and a pistil?

A. The two terms are merely two names for the same thing. B. A pistil is part of a male component of the flower whereas a carpel is part of a female component. C. A pistil can be composed of either a single carpel (in which case the two terms are synonymous) or of two or more carpels fused together. D. A pistil is a reproductive part of a flower whereas a carpel is a showy vegetative part. E. A pistil is part of the female component of a flower and a carpel is not even a flower part at all.

Biology & Microbiology

The process by which a cell takes in a small amount of extracellular fluid and its contents by the ballooning inward of

the plasma membrane is the definition of ____.

a. endocytosis b. exocytosis c. phagocytosis d. passive transport e. osmosis

Biology & Microbiology

During a La Niña event, less rain than normal falls in the American West and Southwest. What type of conditions were in effect in the fall of 2007 when California suffered severe wildfires?

1.La Niña 2.Neutral 3.El Niño

Biology & Microbiology