The chemiosmotic theory is a concept that ________.
A) the transport of Na+ and K+ across cell membranes is by active transport
B) explains how transport by facilitated diffusion reaches a saturation limit
C) explains the blood-brain barrier
D) a proton gradient drives the formation of ATP
D) a proton gradient drives the formation of ATP
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The fluid mosaic model of cell membrane structure describes a membrane with phospholipids that ________ and proteins that ________
a. can drift laterally / may either be fixed or capable of drifting b. are permeable to water-soluble molecules / spontaneously assemble into two layers c. are fixed in place / can drift laterally d. can drift laterally / are fixed in place
In the Hershey and Chase experiment designed to determine the molecule of heredity, what was radiolabeled with 35S?
A) protein B) DNA C) RNA D) rRNA
Several species of Caribbean Anoline lizards have evolved from a single ancestral species. The species occupies a wide variety of ecological niches, such as tree trunks and the ground, or tree trunks only, or tree trunks and the crown of trees, etc. This type of allopatric speciation is called
A. adaptive radiation. B. hybridization. C. alloploidy. D. autoploidy.
In cellular respiration, _______ and ________ are removed from ______ and added to _________.
Fill in the blank(s) with the appropriate word(s).