A piece of silver can be cut indefinitely into pieces and still retain all of the properties of silver.
A) True. All particles, including subatomic particles that make up the element, possess the properties of the element.
B) True. Atoms are the smallest units of matter, are indivisible, and possess the properties of their element.
C) False. Once the pieces are smaller than an atom of silver, the pieces no longer retain the properties of silver.
D) False. Silver atoms are too small to possess the properties of silver.
E) False. As a piece of silver is cut into smaller pieces, the atoms begin to take on the properties of smaller elements.
C) False. Once the pieces are smaller than an atom of silver, the pieces no longer retain the properties of silver.
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To maximize the number of thymine dimer mutations following UV exposure, should you keep human cells in tissue culture in the dark, in the light, or does it matter at all?
A. The dark-light will activate the photorepair systems that can break thymine dimers induced by UV light. B. The light-it's important to keep on producing the thymine dimers by keeping the plate exposed to light as much as possible. C. It's best to alternate light and dark every hour to increase the chances that thymine dimers will form in the human cells, but still keep the photorepair systems from correcting them as they are formed. D. It doesn't matter-human cells don't possess the enzymes needed for photorepair of thymine dimers.
A muscle that decreases the angle between two bones at a joint is called a(n)____
a. flexor b. agonist c. depressor d. antagonist e. extensor
The world ocean covers ________ of Earth's surface
a. 94% b. 71% c. 46% d. 68%
Net primary productivity is greater in areas with a long photosynthetic period than in areas with a short photosynthetic period
Indicate whether the statement is true or false