What human activity can cause flooding along riverbanks?
A) Removal of forests and wetlands along the river
B) Decreased conversion of forests to farmland
C) Decreased soil formation
D) Overfishing
E) Increased evaporation due to fewer trees
A
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The likely number of and locations of transmembrane segments of integral membrane proteins is inferred by
A) X-ray crystallography. B) SDS-PAGE. C) western blot. D) hydropathic analysis. E) affinity labeling.
Which of the following arose first?
a. animals b. archaea c. fungi d. protists e. plants
Assuming independent assortment, what phenotypic ratio would you expect to see if an individual with the genotype RrGg is self-crossed?
A) 1:3 B) 9:3:3:1 C) 1:2:1 D) 1:3:2:1 E) 3:1
Fossil evidence places the origin of angiosperms in the early Cretaceous period, at least 130 million years ago. By 100 million years ago, all of today's major lineages of angiosperms had evolved. Angiosperms make up 95% of all modern plants species. Which of the following may help explain the rapid success of angiosperms?
A. use of the wind to disperse pollen and seeds B. use of flowers and fruits to protect and disperse both pollen and seeds C. use of the wind to disperse spores D. use of water to disperse pollen and seeds E. All answers are correct.