0
A jar contains a bacterium which doubles every minuteThe jar was full at the end of 3 hoursHow long will it take ot filll 25 percent of the jar?
Wiki User
∙ 14y ago
That depends a great deal on how you define the term "multiply". If you mean each cell divides - doubling the number of bacteria, the it would be half full at 11:59 PM and double to twice that 1 minute later at 12 AM, i.e. 2 x ½ = 1 (12 AM is midnight - see the discussion below) . Of course if by 12 AM you meant Noon - then the answer would be 11:59 AM.
If the multiplication factor is other than 2, the answer would have to be modified accordingly.
Convention has it that 12 midnight is called 12 AM, which comes after 11:59:59 pm, and thus the day starts with am. In other words the date in the calendar change at midnight and that moment is called 12 AM.
You could, of course , use a different system to avoid this confusion such as the 24-hour clock. There, the beginning of the day (12 AM or 12 midnight) is denoted by 0000 hours, and the last minute of the day starts at 2359 hours (equivalent to 11:59 pm). So the time after noon is denoted by numbers from which 1200 should be subtracted to get the time as per 12-hour clock.
Wiki User
∙ 7y ago
Wiki User
∙ 14y agoThe jar would be 25 percent full at 2 hours 58 minutes as it doubles to become half full at 2:59, then doubles to become full at 3 hours.
Add your answer:
Earn +20 pts
If there was one bacteria on a piece of meat left in a nice warm place for five hours how many would be present at the end of this time?
Bacteria breed at different rates.The answer to your question would depend on what the bacterium was. IF we could assume that it is a bacteria that doubles every 20 minutes under these particular conditions, 1 bacterium would turn into 214 or 16384 bacteria. Again, realize that growth rates will vary and, when it comes to food, you almost never start out with only one bacterium.
What happens in a cell interphase?
The cell grows, and develops, as it doubles its size. It contains DNA structures now, called chromosomes.
What simple machines are in an esculator?
An escalator contains a motor with a pulley, a belt (doubles as the handrail), and many hinged pieces that form the steps. I am pretty sure there are bearings in the tracks.
What population of bacteria that doubles its size every 20 minutes exhibits growth?
um if you use the simple doubling time formula, you'd do it like this: (final pop. #) = (original pop. #) x 2^(time it takes for it to double/ how many times it doubles) so you're missing some info. find out either the initial pop or the final pop. your probably referring to one bacterium, but yeah, double check (haha, get it? double?haha)
Can you have doubles play in tennis?
Yes. Mens Doubles, Ladies Doubles and Mixed Doubles are permitted forms of Doubles in Tennis.
Are their stunt doubles in make it or brake it?
Yes there are stunt doubles i saw a video of their stunt doubles before
What happens to the circumference of a circle when the radius doubles?
If the radius of a circle doubles, the circumference doubles, and so does the diameter.
What happens to a volume of a gas when the pressure doubles?
the volume doubles
How many triple doubles did Magic Johnson have in college?
He had 138 triple-doubles
Describe what happens to the number of chromosomes when two grasshopper sex cells join to fertilization?
2n. Given that the sperm has (n) number of chromosomes, and the egg has (n) number of chromosomes, then the zygote will contain (2n) number of chromosomes. For example, a sperm cell of a human contains 23 chromosomes. The egg cell also contains 23 chromosomes. After they join, the resulting zygote will contain 46 chromosomes.
What are the different categories of badminton?
Men's singles men's doubles women's singles women's doubles mixed doubles( man and women)
How many grand-slams wins Martina hingis singles and doubles?
25 now. Including doubles, singles and mixed doubles.
