10 Questions
When were hard disk drives first introduced?
1956
What is the main function of the platters in a hard disk drive?
Storing data on a stack of discs
What is the size of the first IBM drive, the 350 RAMAC?
Size of two refrigerators
Which component of the hard drive contains the electromagnetic read/write heads?
Platters
What is the main purpose of the hard disk logic board?
Connecting the hard drive to the computer
Binary fission is the process that bacteria use to carry out cell ______
division
A unit used to estimate the number of viable microbial cells is colony forming unit (CFU), which stands for ______
colony forming unit
The time it takes for a population of bacteria to double in number is called the ______ time
generation
A pure culture contains only one species or ______
strain
Examples of bacterial generation times include E. Coli with a generation time of 20 to 21 minutes in optimum conditions, Streptococcus lactis with a generation time of 48 minutes in optimum conditions, and Mycobacterium tuberculosis with a generation time of about 792 minutes in optimum conditions. The generation time depends upon factors such as the nutrient in the medium and physical conditions like ______ and temperature
pH
Test your knowledge about hard disk drives with this quiz. Learn about the history, physical components, and functionality of hard drives.
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