Which number identifies the structure that carries supplemental genetic information?
a. 1
b. 2
c. 3
d. 4
e. 5
B
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Which of the following are considered to be fossils?
A) Footprints or other impressions preserved in stone B) Mineralized bones C) Animals frozen in ice or preserved in amber D) All of these
The part of an atom without a charge is a(n)
A. ion. B. neutron. C. electron. D. molecule.
Sulfur dioxide is a natural product of volcanoes and hot springs, and by itself, it is not acidic. How, then, is excess sulfur dioxide linked to acid rain or acid deposition?
What will be an ideal response?
All of the following factors contribute to hospital-acquired infections EXCEPT
A) some bacteria metabolize disinfectants. B) gram-negative bacteria are often resistant to disinfectants. C) invasive procedures can provide a portal of entry for bacteria. D) bacteria may be present in commercial products such as mouthwash. E) None of the answers is correct; all of these factors may contribute to hospital-acquired infection.