2. which structures in the diagram above connects the umbilical vein with the vena cava and connects the pulmonary artery with the aorta?

a: a, the ductus arteriosus; d the ductus venosus
b: b, the ductus arteriosus; d the ductus venosus
c: b, the ductus venosus; d the ductus arteriosus
d: a, the ductus venosus; d the ductus arteriosus

Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?