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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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
In not more than three sentences, explain why a plant placed in a window grows toward the light. What will be an ideal response?
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.