Explain the second law of thermodynamics in your own words, and briefly explain how this law applies to living
organisms. What will be an ideal response?
The second law of thermodynamics states that when energy is converted from one form to
another, some of that energy is converted to heat, which is a form of energy that is unusable
by living organisms. As a consequence of the second law, plants must photosynthesize and
animals must eat in order to compensate for this continued loss of usable energy in cells.
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Which molecule catalyzes covalent bond formation between fragments of DNA.
A. helicase. B. ligase. C. polymerase. D. primase. E. nuclease.
Tintinnids are examples of the following protozoans:
a. radiolarians. b. ciliates. c. diatoms. d. foraminiferans. e. dinoflagellates.
Which of the following is not a predicted outcome of climate change?
a. change in precipitation patterns b. inability of some organisms to adapt c. profound health effect on people in developing countries d. increased problems for agriculture e. global average sea level decreasing
The transpiration pull is due to the ________ that causes water to move up through the xylem that begins at the surface of mesophyll cells.
Fill in the blank(s) with the appropriate word(s).