Bacteria multiply by division. one bacterium becomes two. then two divide into four, the four divide into eight, and so on. for a certain strain of bacteria, the time for this division process is one minute. if you put one bacterium in a bottle at 11: 00 p. m., by midnight the entire bottle will be full.

1. at what time will the bottle be half full? t realize that 2. suppose you could be a bacterium in this bottle. at what tim you were running out of space? explain your response.

1) By 11:30pm

2) Shortly before midnight (few minutes to 12:00am)

Explanation:

Since the strain of bacteria takes 1 minute to divide (double its population), and by midnight (12:00am) the entire bottle becomes full, then:

I) Subtract Initial division time from Final division time i.e 12:00 - 11:00 = 1 hour

II) Split 1 hour into two (60minutes makes 1 hour)

I hour/2 = 30 minutes

Definitely, the bottle will be half filled by 11:30pm

2) Once half filled, the rapidly dividing cells reach for the top of the bottle as midnight approaches. By 11:50pm upwards, bottle space must have been running out

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products