If a neutral atom has an atomic number of 10, then we know that it has:
A) 10 protons, 10 electrons, and 10 neutrons.
B) 10 protons.
C) 10 electrons.
D) 10 neutrons.
E) 10 protons and 10 electrons.
Answer: E
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A chemical substance that behaves as a natural
analgesic is a. an amphetamine. b. LSD. c. epinephrine. d. an endorphin. e. none of these.
Which of these statements concerning autism spectrum disorders (ASDs) is false?
A) ASDs affect girls more frequently than boys. B) Symptoms typically appear by age 1 to 3 years. C) They last a lifetime. D) They can be associated with other medical conditions.
Which of the following indicates the correct sequence of sea urchin egg coverings, beginning at the
outside and moving inward? a. granulosa cells, zona pellucida, plasma membrane b. zona pellucida, vitelline envelope, plasma membrane c. jelly coat, vitelline envelope, plasma membrane d. plasma membrane, jelly coat, zona pellucida e. vitelline envelope, jelly coat, plasma membrane
The medication ______________ is prescribed to prevent or relieve the pain of angina by dilating the blood vessels to the heart.
Fill in the blank(s) with the appropriate word(s).