In mitochondria, chemiosmosis moves protons from the matrix into the intermembrane space, whereas in chloroplasts, chemiosmosis moves protons from the _____
A) matrix to the stroma
B) stroma to the thylakoid space
C) intermembrane space to the matrix
D) thylakoid space to the stroma
B
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What happens when phospholipids are placed in an aqueous solution?
a. They disperse and form polar bonds with other organic molecules present in the solution. b. They move to the water's surface and form a single-layered membrane between the water and the atmosphere. c. They repel one another. d. They spontaneously form bilayers. e. The hydrophobic tales force the phospholipids to form "beads" at the surface, much like what you see when vegetable oil is added to water
In 1749, French naturalist became one of the first scientists to suggest that closely related species originated from a common ancestor and were continuously changing.
A. Charles Lyell B. James Hutton C. Georges Cuvier D. Charles Darwin E. Georges-Louis Buffon
Which of the following is true of a population?
a. Members of a population are all genetically identical. b. Members of a population live together and interbreed. c. A population may include both predators and prey. d. Members of a population spend much of their time living apart. e. More than one of these is true
Which category is at the top of the classification hierarchy, that is, it includes the rest of the categories given?
A. order B. genus C. class D. family E. phylum