The two substances of unknown origin found within the cell discovered in the early twentieth century were
A) neutrons and electrons.
B) deoxyribonucleic acid and ribonucleic acid.
C) protons and electrons.
D) neutrons and protons.
E) genes and electrons.
B
You might also like to view...
African Americans were brutally attacked in race riots that occurred in Tulsa, Oklahoma, and ________
Fill in the blank(s) with correct word
What social class increasingly became despised in Ming China, in spite of their profitability?
a. Buddhist monks b. farmers c. Confucian scholars d. warriors e. merchants
Which of the following was true of the low country by 1740?
A) Black slaves made up 90 percent of the population in vicinity of Charleston. B) Almost all slaves had converted to Catholicism. C) There were roughly equal numbers of slaves and indentured servants. D) All indigenous peoples had been driven from the region.
The Truman administration failed to pass any civil rights legislation because __________
A) Truman himself secretly worked to defeat its passage B) most people said the civil rights movement was a communist plot C) black voters had traditionally backed the Republican Party D) southern politicians managed to block the legislation E) controversial social change during the Cold War could be divisive and dangerous