Which of the following correctly matches the different RNA and its role?mRNA: messenger RNA that takes the message from the nucleus to the ribosome tRNA: transcription RNA that transcribes the DNA rRNA: moves information from the nucleus to the ribosomes dRNA: transfers the amino acid to the matching mRNA codon

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.