Which of these trees reflects a hypothesis that Bacteria are more closely related to Eukarya than to anything else?
What will be an ideal response?
b
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Under standard conditions, ATP can release for every molecule converted to ADP
A. less than 1 cal of energy. B. 1 to 2 cal of energy. C. 7.3 Kcal of energy. D. different amounts of energy depending on the cell.
The morphology of a cell influences its
A) motility. B) metabolism. C) surface-to-volume ratio. D) motility and surface-to-volume ratio
Animal cells are permeable to water and urea but NOT to sucrose. Initially, the inside of a cell contains 1 M sucrose and 1 M urea and the outside 1 M sucrose and 2 M urea. After the system reaches equilibrium, what changes are observed?
A. The molarity of urea would be higher outside than inside the cell. B. The molarity of sucrose would be similar inside and outside the cell. C. Water would move out of the cell causing the cell to shrivel. D. The molarity of urea would be higher outside the cell and the molarity of sucrose would be similar inside and outside the cell. E. The molarity of sucrose would be similar inside and outside the cell and water would move out of the cell causing the cell to shrivel.
Which statement best describes a lophophore?
A. It is a ciliated ring of tentacles surrounding the mouth. B. It is a larval stage found in the Lophotrochozoa and the Ecdysozoa. C. It is a structure used for locomotion in the Lophophorata. D. It is the opening also referred to as the anus in the Ecdysozoa. E. It is one of the openings to the excretory system of phylum Platyhelminthes