Most often, the largest gradient in water potential is between
A. roots and soil water.
B. root xylem and shoot xylem.
C. xylem and phloem.
D. leaf cells and the intracellular spaces inside the leaves.
E. the relative humidity inside the leaf and the relative humidity outside the plant.
E. the relative humidity inside the leaf and the relative humidity outside the plant.
The driving force of transpiration is the gradient that exists between the outside of the leaf (low humidity) and the inside of the leaf (high humidity).
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What is the current status of gene therapy?
a. It is currently being used effectively to cure cystic fibrosis. b. It has been terminated because clinical trials have shown it to be ineffective. c. It is being evaluated to assess the risks associated with potential side effects. d. The number of clinical trials is increasing at an almost uncontrollable rate. e. It may be considered in the future, but currently the technology is not available.
If two solutions have unequal concentrations of a solute, the solution with the lower concentration is called
A. osmosis. B. isotonic. C. hypertonic. D. hypotonic.
When an electron moves from the outer shell of one element to the outer shell of another element, a(n) ________ bond has been created
Fill in the blank(s) with correct word
You sit next to Uncle Ed, an immunologist, at Thanksgiving dinner. "I'm a 'big eater'," he says, "just like the cells I study." What are the large cells that engulf pathogens that Uncle Ed works with?
A. Monocytes B. Antibodies C. Bacteriophages D. Macrophages E. Erythrocytes