A scientist conducts a procedure that causes nitrogen atoms to gain neutrons. The resulting atoms will be:
A. ions of nitrogen.
B. positively charged.
C. negatively charged.
D. isotopes of nitrogen.
E. new elements with higher atomic numbers.
D. isotopes of nitrogen.
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The kangaroo rat gets the bulk of its water from
a. drinking liquids. b. absorption through its skin. c. ingesting food. d. oxidative reactions in its cells. e. reuptake of water from urine.
The heart is surrounded by the _____, a double layered sac that protects it and anchors it in place
a. peritoneum b. perineum c. pericardium d. peristalsis e. periwinkle
How many haploid cells are produced by one diploid cell during meiosis?
A) 8 million B) One C) Four D) Two
The ____ plate was used to find the prescence of _____, which catabolizes ________. (hint: same name!)
Fill in the blank(s) with the appropriate word(s).