Which statement best describes how Watson and Crick's model used other scientists' work to create a model of DNA? A. They used Chargaff's rule to determine that it contains ribose sugar.
B. They used Franklin's photo to determine that DNA was a double helix.
C. They used Levene's work to determine the number of base pairs in each strand.
D. They used Nirenberg and Matthei's studies to determine that DNA is made of nucleotides.

What macromolecule is produced during translation? a. carbohydrate b. rna c. dna d. protein

Which of the following will a bacterium produce when a human gene is added to its genome? question 4 options: human carbohydrates a protein made up of both human and bacterial properties the human protein coded for by the human gene human plasmids that can be isolated from the bacterium

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey