A scientist conducts a procedure that causes nitrogen atoms to gain neutrons. The resulting atoms will be
A. new elements with higher atomic numbers.
B. positively charged.
C. ions of nitrogen.
D. negatively charged.
E. isotopes of nitrogen.
Answer: E
Biology & Microbiology
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You have studied the presence of a trait in the members of three generations of a family. With this information, you constructed a ________ to track how the trait was passed down through the generations
Fill in the blank(s) with correct word
Biology & Microbiology
Blood is pumped from the heart into the arterial system, which branches from arteries into fine ________.
A. veins B. venules C. arterioles D. capillaries
Biology & Microbiology
A DNA molecule is made up of:
a. lipids b. proteins c. nucleotides d. fatty acids e. carbohydrates
Biology & Microbiology
Birds are the only group of animals that are endothermic.
a. true b. false
Biology & Microbiology