The following are all adaptations to life on land except
A) rosette cellulose-synthesizing complexes.
B) cuticles.
C) tracheids.
D) reduced gametophyte generation.
E) seeds.
Ans: A) rosette cellulose-synthesizing complexes.
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Of the following electron carriers of the electron transport system, which transfers protons in addition to electrons?
A) cytochrome a B) cytochrome b C) coenzyme Q D) iron-sulfur proteins E) iron-copper proteins
Estrogen and progesterone exhibit which type of hormone interaction?
a. synergistic b. permissive c. opposing d. unrelating e. mutual
The four basic animal tissues are:a
connective, digestive, nervous, and respiratory. b. blood, bone, connective, and epithelial. c. epithelial, connective, muscle, and nervous. d. digestive, nervous, reproductive, and respiratory. e. circulatory, excretory, respiratory, and sensory.
Which of the following is not a hypothesis for the origin of viruses?
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