In general, which of the follwoing will diffuse across a lipid bilayer most rapidly.
a. Small hydrophillic molecule
b. Small hydrophobic molecule
c. Large hydrophillic molecule
d. Large hydrophobic molecule
b. Small hydrophobic molecule
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It is estimated that the mass of bacteria and fungi in the top six inches of an acre of soil is
A. 2 tons. B. 100 lb. C. 10 tons. D. 500 lb.
Transcription and replication are alike in that both
A) are guided by complementary base pairing. B) are regulated by homeobox genes. C) require DNA polymerase. D) require a promoter and RNA polymerase.
________ muscle tissue is involuntary and has branching cells with striations
Fill in the blank(s) with correct word
All of the following statements about sensory receptors are true EXCEPT
A. sensory receptors monitor the internal environment of the body. B. photoreceptors include rod and cone cells. C. chemoreception is believed to be a primitive sense in animals. D. the retina of the eye contains photoreceptors that are sensitive to light. E. sensory receptors for taste are found in the nose and mouth.