An animal's circulatory system contains ____

a. solid medium to transport nitrogen
b. blood vessels for transporting solid food
c. blood vessels leading to the heart
d. a mouth opening to the outside
e. nitrogen to transport wastes


ANSWER: c

Biology & Microbiology

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____________ asteroids are located in the orbit of Jupiter

Fill in the blank(s) with correct word

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If the cell was a cube and you doubled the height, width, and length of the cell, how much would the surface area increase?

Cells come in a range of sizes, and a variety of shapes. Assuming a cell type has a conservative cube shape, it may have limits to size, because of the need of materials to diffuse into or out of the cell through the surface area of the cell membrane. Calculate the numerical changes of a cube-shaped cell from an original size of 10 ?m × 10 ?m × 10 ?m. A. 8-fold B. It would stay the same. C. 4-fold D. 2-fold E. 6-fold

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What is the most important role of bacteria in the environment?

A) as disease-causing agents B) as fungal control C) as decomposers D) as a source of restriction enzymes

Biology & Microbiology