The excretory system of insects:a
has many openings on the body wall.
b. contains flame cells.
c. is not connected to the gut.
d. excretes uric acid from the rectum.
e. relies on diffusion across the body wall.
d
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Indicate whether the statement is true or false.
Which of the following describes the purpose of the polymerase chain reaction?
a. increasing the number of copies of DNA b. separating charged molecules by size and charge c. opening cells to extract DNA in a gelatinous mass d. cutting DNA sequences in a predictable manner
Glucose is removed from filtrate by _____.
Fill in the blank(s) with the appropriate word(s).
Which of the following organisms represent a K-selected species?
A) whales B) grasshoppers C) salmon D) houseflies