Argon has 18 protons. How many electrons are
in its third energy level?
a. 2
b. 4
c. 6
d. 8
e. 10
D
You might also like to view...
The female homolog of the glans penis is the:
A. clitoris B. labia minora C. labia majora D. vulva E. vagina
Fragile X syndrome is a human disease caused by a trinucleotide repeat expansion that results in loss-of-function of the FMR1 gene on the X chromosome. An animal model with most features of this syndrome could be created by
A) adding a transgene containing a mutant copy of the FMR1 gene to a mouse or primate genome. B) adding a transgene containing a wild-type copy of the FMR1 gene to a mouse or primate genome. C) knocking out both copies of the FMR1 gene from a mouse or primate genome. D) knocking out one copy of the FMR1 gene from a mouse or primate genome.
Cyanobacteria
1.produce oxygen. 2.have a blue-green color. 3.are photosynthetic. 4.played a very important role in the evolution of life on earth. 5.All of the options are correct.
Which of the following organs may be removed without harming the body?
a. liver b. pancreas c. heart d. gallbladder e. brain