Aflask of 100 ml growth medium is inoculated with 500 stationary-phase bacteria and placed in optimum incubation condition.
they are incubated for 6 hours and are observed to be in lag phase for the first hour before they start growing exponentially.
at the end of the 6 hours, the bacteria density is measured by serial dilution followed by plating. it is found to be 1.28 x 103 cfu/ml
a) how many bacteria are there in the culture in total after 6 hours?
b) how many times have the bacteria doubled during this time?
c) using the answers to (a) and (b), what is the generation time?

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.

Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human