Biological evolution of life on Earth, from simple prokaryote-like cells to large, multicellular eukaryotic organisms, _____
A) has occurred in accordance with the laws of thermodynamics
B) has caused an increase in the entropy of the planet
C) has been made possible by expending Earth's energy resources
D) has occurred in accordance with the laws of thermodynamics, by expending Earth's energy resources and causing an increase in the entropy of the planet
E) violates the laws of thermodynamics because Earth is a closed system
Answer: A
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The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats
Which of the following is most directly involved in the evolution of these variations in metamorphosis? A) artificial selection of sexually immature forms of insects B) changes in the homeobox genes governing early development C) the evolution of meiosis D) the development of an oxidizing atmosphere on Earth E) the origin of a brain
Selection that reduces the frequency of hybridization and/or the fitness of hybrids between populations following secondary contact is termed ________
Fill in the blank(s) with correct word
Brassinosteroids differ from other plant hormones in that they are:
a. peptides. b. steroids. c. derivatives of adenine. d. derivatives of aspirin. e. derivatives of prostaglandins
Living cells are most commonly visualized by means of _______ microscopy.
a. phase-contrast. b. bright-field. c. fluorescence. d. electron.