Nitrogen, with an atomic number of 7, has ____ electron(s) in the first energy level and ____ electrons in the second energy level.
A. one; six
B. two; five
C. three; four
D. four; three
E. five; two
Answer: B
You might also like to view...
The most common cause of cystitis is:
A) Candida albicans. B) Escherichia coli. C) Staphylococcus epidermidis. D) Staphylococcus saprophyticus.
"H zones" in skeletal muscle are composed of
a. discs to which thin filaments are anchored. b. stacked thick filaments along with parts of thin filaments that overlap both ends. c. thin filaments but no thick filaments. d. thick filaments but no thin filaments. e. discs to which thick filaments are anchored.
In any population, some individuals have forms of traits that make them better suited to their environment than others. This is referred to as a(n) ______ trait
a. selective b. healthy c. advantaged d. adaptive e. competitive
A person goes to the doctor and is told his blood pressure is 90/60 and his pulse is 80. Which of the following is FALSE?
A) Mean arterial pressure is 70 mm Hg. B) Diastolic pressure is 60. C) Systolic pressure is 90 mm Hg. D) Pulse pressure is 80 mm Hg. E) Heart rate is 80.