2. asap
use this portion of a dichotomous key for tree identification to answer the question.

1a. needlelike leaf ® step 10
1b. broad leaf ® step 2
2a. compound leaf ® step 3
2b. simple leaf ® step 7
3a. leaves attached at single point ® buckeye
3b. leaves attached at many points ® step 4
4a. leaf bases attached opposite each other on branch ® ash
4b. leaf bases attached staggered on branch ® step 5

what are the characteristics of a buckeye leaf?
needlelike simple leaves attached opposite each other on the branch
broad simple leaves attached at single points on the branch
broad compound leaves attached at single points on the branch
needlelike compound leaves attached staggered on the branch

Consider this plant cell which organelle is labeled g

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?