A chemical reaction is defined as spontaneous if there is a net loss of free energy during the reaction process. However, spontaneous reactions do not always occur rapidly
Favorable biological reactions require ______________ to selectively speed up reactions and meet the demands of the cell.
(a) heat
(b) ATP
(c) ions
(d) enzymes
(d)
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Based on this study, FOXP2 must be expressed in which tissues?
A. brain B. muscle C. muscle and brain D. nerves in the ear E. muscle and nerves in the ear
Which of the following does not take place during the first of the two phases of photosynthesis?
a. Light energy is absorbed by electrons in the chlorophyll. b. Water is split. c. ATP and electron carriers are formed. d. Carbon dioxide is fixed. e. Oxygen is released.
DNA sequence evidence suggests that plants, fungi, and animals arose from different lineages of unicellular protists. This suggests which of the following?
A. Protists evolved before the other three kingdoms. B. Early ancestors to plants, fungi, and animals could interbreed. C. Multicellular organisms arose only once in evolutionary history. D. All unicellular organisms are now extinct. E. The animal, plant, and fungal kingdoms contain some single celled organisms.
The best definitive match for glass is determined by its _____.
Fill in the blank(s) with the appropriate word(s).