1. what is the % o2 saturation of hemoglobin in the blood within lung tissue where the partial pressure of o2 = 80 mm hg? 100% 2. what is the % o2 saturation of hemoglobin in the blood of resting leg muscle where the partial pressure of o2 = 40 mm hg? 75% 3. when your leg muscle is resting, what percent of o2 does hemoglobin unload (compared to the lung)? 4. if the partial pressure of o2 in the blood of your running leg muscle is 30 mm hg, what percent of its o2 does hemoglobin unload there (compared to the lung)?

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

credit: gradman555p98x9p

read more on -

ask your friends for what they got then copy it down if you don't have any friends which is fine than google it or pay the teacher

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.