What are the major differences between archaea and eubacteria? 1.archaea can live in extreme environments; eubacteria cannot. 2.archaea have a true nucleus; eubacteria do not. 3.the gene sequences of their rrna are very different. 4.archaea are much larger than eubacteria.

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

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

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.