What is the main function of gas exchange
a. to remove to carbon dioxide and supply oxygen to the body.
b. to remove oxygen from the body
c. to supply carbon dioxide and remove oxygen from the body
d. to supply water to the body cells.
Answer: a. to remove to carbon dioxide and supply oxygen to the body.
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Chaparral is
A. a type of shrubland/grassland. B. a type of forest. C. restricted to serpentine soils. D. widespread in Africa. E. distinguished by tall trees.
A flatworm lacks:
a. bilateral symmetry b. a true coelom c. mesodermal tissue d. a nervous system e. a solute regulating system
What kinds of molecules pass through a phospholipid bilayer most easily
What will be an ideal response?
A technique used to identify species by matching up sequence differences in a standard region of the genome is called
A. mutation counting. B. genome sequencing. C. DNA barcoding. D. nucleotide matching. E. PCR