Which statement is true for cephalochordates? notochord is present only in the larval stage; it is absent in adults. notochord is present in the larval stage; it transforms to vertebrae in adults. notochord is present throughout their lives.

What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

Put the following processes of protein synthesis in the correct order: - dna strands unwind and separate - mrna copies dna according to complimentary base pairing - trna's anticodons bring amino acids to the corresponding mrna codons - amino acids bind to each other making a protein - mrna leaves the nucleus - a stop codon is reached, the newly formed protein is released to go do its job for the cell