Suppose that the each replication fork moves at a rate of 500 base pairs per second, how long would it take to replicate the E. coli chromosome (with 4.6 million base pairs) from a single origin of replication?

Which three of the following memebers of the sponge community are most likely to be PRIMARY consumers:

a) tunicate

b) barnacle

c) flatworm

d) fire worm

e) brittlestar

f) nudibranch

g) crab

h) sponge

Which three of the following memebers of the sponge community are most likely to be TERTIARY consumers:

a) small crustaceans, like the isopod

b) fan worm

c) crab

d) burrowing annelid filter-feeder

e) nudibranh

f) tunicate

g) cnidarian

h) sponge