In an organism, all cells have identical _______, but each cell makes a different set of _______, depending on which proteins are needed.
A. mRNA; DNAs
B. DNA; mRNAs
C. DNA; tRNAs
D. proteins; mRNA
E. tRNAs; DNA
2007-01-31 10:12:45 · 5 answers · asked by answer_me 1 in Science & Mathematics ➔ Biology
b
2007-01-31 10:18:27 · answer #1 · answered by citrus punch 4 · 0⤊ 0⤋
B
Each cell contains the entire genetic code (usually DNA) for an entire organism. The phenotypic properties of an individual cell, however, are dependent on which genes are expressed in that cell. This process is called transcription, whereby DNA code is translated into mRNA (messenger RNA) for translation into a fully functional protein.
2007-01-31 18:28:52 · answer #2 · answered by Curtis B 2 · 0⤊ 0⤋
The answer is B. (Almost) all cells have the same set of DNA, but it is expressed differently, through mRNA, according to which type of cell it is. (Some cells have no DNA, for example red blood cells).
2007-01-31 18:18:57 · answer #3 · answered by Marianne M 3 · 0⤊ 0⤋
B
2007-01-31 18:28:29 · answer #4 · answered by Huggles-the-wise 5 · 0⤊ 0⤋
B.
2007-02-01 02:56:24 · answer #5 · answered by Qyn 5 · 0⤊ 0⤋