No it wouldn't because it would not absolutely disappear
If it's ribosomes, pili and a chromosome, you are talking about a procaryote. So, you are likely to see mesosomes, cell wall, cellular membrane, cytoplasm
B. Is the correct answer.
We can use this information to calculate the rate or speed the person was traveling at
With distance = rate * time we can figure out his rate or speed.
Plug in variables: 5 miles = 30 minutes * r
First convert 30 minutes into an hour. Which is easy. It's 1/2 an hour.
5 miles = 1/2 hour * r
Divide both sides by 1/2 hour.
5 miles / 1/2 hour = (1/2 hour * r) / 1/2 hour
10 miles per hour = r
Then switch around.
r = 10 miles per hour