What is the primary source of energy for nearly ALL of the earth's ecosystems?
Answer: Sunlight
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Describe how losing leaves in the autumn can affect plant nutrient requirements, and how plants handle this issue.
What will be an ideal response?
At present, the neutral theory of molecular evolution ________
A) is strongly supported by significant amounts of empirical evidence B) has been disproven, as neutral mutations have not been shown to have been fixed in populations C) is inclusive, as enough data has not yet been evaluated D) seems to work in some species but not others
The transfer of electrons from glucose to oxygen during aerobic respiration takes place in a stepwise
fashion through a number of intermediates rather than by direct transfer. This is because:a. it is chemically impossible to transfer electrons directly from glucose to oxygen. b. the chemical intermediates donate some of their electrons in order to increase the electron pool. c. the energy of the electrons can be used to make ADP. d. the energy of the electrons can be used to make ATP. e. the energy of the protons can be used to make ATP.
Which of the following is a characteristic of smooth endoplasmic reticulum (SER) but not rough endoplasmic reticulum (RER)?
A) Protein synthesis B) Sending vesicles to the Golgi that contain proteins that are either secreted or become part of the plasma membrane C) Steroid synthesis D) Drug and alcohol detoxification E) Steroid synthesis and drug and alcohol detoxification