Argon has 18 protons. How many electrons are

in its third energy level?
a. 2
b. 4
c. 6
d. 8
e. 10


D

Biology & Microbiology

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

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology

Which of the following organs may be removed without harming the body?

a. liver b. pancreas c. heart d. gallbladder e. brain

Biology & Microbiology