Taste cells that respond to umami specifically interact with ____
a. sodium ions
b. hydrogen ions
c. quinine
d. sugars
e. glutamate
ANSWER: e
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Alien species are most likely to disrupt natural ecosystems when they:
A) are closely related to native species. B) are similar in appearance to native species. C) assume ecosystem roles of native species. D) are larger in size than native species.
In not more than three sentences, explain why a plant placed in a window grows toward the light. What will be an ideal response?
Scientists expect water enriched with 137 Cs to reach the west coast of North America by 2015-2020 due _____
a. rising sea levels b. prevailing winds c. drifting kelp forests d. air currents e. deep marine currents
Zara has worked for 40 years at a garden center, where she often potted plants. In the early days, she frequently worked with vermiculite, an asbestos-like material
Which organelles are most likely to have destabilized membranes as a result of exposure to vermiculite? A) nuclei B) mitochondria C) Golgi complexes D) lysosomes