Directions: In the blank, put a D (for DNA) R (for RNA) B (for both) or N (for neither). 1. Made of nucleotides I l. Single strand
2. A with T 12. Attach to ribosome
3. C with T 13. Codons
4. Double-strand 14. Anticodons
5. Ribose 15. Uracil
6. Only in nucleus 16. Unzips
7. Copies DNA 17. Transcription
8. Makes up ribosome 18. Translation
9. Stable 19. Three types
10. Phosphate 20. Has promoter

Why do you think water is so important to living things

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

In 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? in 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, some bacteria began to synthesize cell walls using a protein that was not affected by methicillin. these bacteria survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, bacterial populations gradually began to synthesize cell walls using a protein that was not affected by methicillin.