A one-way relationship in which one species benefits at the expense of another is ____.
A. commensalism
B. competitive exclusion
C. parasitism
D. obligate mutualism
E. a neutral relationship
Answer: C
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Grasshopper mice are resistant to exhibiting pain from scorpion stings. This is due to the scorpion venom the action potential in the pain receptors.
A. activating B. inhibiting C. reestablishing D. speeding up E. slowing down
Which of these is not part of loose connective tissue?
A. Reticulin B. Collagen C. Adipose cells D. Elastin E. Chondroitin
Please select the statement that best describes the purpose of gel electrophoresis.
Gel electrophoresis is able to cut DNA in very specific locations. Gel electrophoresis enables the amplification of specific DNA sequences. Gel electrophoresis separates DNA fragments based on size. Gel electrophoresis identifies specific segments of DNA. Gel electrophoresis joins different segments of DNA.
Why do cells not have membrane transport proteins for O2?
What will be an ideal response?