Misting tomato plants with wintergreen tea can help prevent mosaic virus from infecting the plant. How?
What will be an ideal response?
The methyl salicylate in the wintergreen tea enhances the plants' immune response, making them more resistant to the virus (much like methyl salicylate in willow, alder, and birch trees increases the immune response to insect-caused infections).
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Doctors test the ________ level in the urine to determine if someone has diabetes or not
a. solute b. potassium c. sodium d. sugar e. salt
The nervous system develops primarily from
a. ectoderm. b. mesoderm. c. endoderm. d. the placenta. e. the gray crescent.
ISO membranes are inside-out membrane vesicles used by researchers in membrane studies. As a molecule diffuses into the vesicle, it will encounter the layers of the membrane in the following order
A) tail-head-head-tail. B) head-tail-head-tail. C) tail-head-tail-head. D) head-tail-tail-head. E) head-head-tail-tail.
To determine the effects of caffeine on memory formation, Professor Mulligan gives one group of students a cup of caffeinated coffee and a separate group of students a cup of decaffeinated coffee. Thirty minutes later, he administers a memory formation task to both groups. The coffee in this experiment (both caffeinated and decaffeinated) represents the ________ .
a. control group b. independent variable c. experimental group d. dependent variable e. confounding variable