The energy output of a Seyfert galaxy____
a. changes slowly with a period of weeks
b. is a hundred times the luminosity of the entire Milky Way
c. is noticeable only in the infrared
d. comes from starburst effects
e. is concentrated in the spiral arms
b
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Another name for electric potential difference is ______________
Fill in the blank(s) with correct word
The Mercalli scale measures an earthquake's
A) effects. B) damage. C) intensity. D) intensity, damage, and overall effect.
A glucose transporter changes shape when it binds to a molecule of glucose. The shape change moves glucose down its concentration gradient to the opposite side of the membrane, where it detaches from the transport protein. What does this illustrate?
a. facilitated diffusion b. passive diffusion c. active transport d. energy fueled pump e. open channel transport
Primitive meteorites can be distinguished from other meteorites and terrestrial rocks because they
A) contain a noticeable fraction of pure metallic flakes. B) resemble the composition of Earth's core. C) contain a lot of iron and were used by humans to make iron tools. D) resemble the composition of Earth's mantle. E) resemble the composition of rocks from lava flows that occurred on asteroids very shortly after the formation of the solar system.