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LSC Biology solved scenario item
What is ple in full
Primary leaving examination
Primary leaving examination
See lessWhat is a Local Area Network?
Booting a Computer: The operating system consists of a supervisor portion and a set of system programs. When the computer is switched on, the supervisor portion of the operating system (known as kernel) is loaded in the RAM from the disk. This process to start or restart a computer is called the booRead more
Booting a Computer: The operating system consists of a supervisor portion and a set of system programs. When the computer is switched on, the supervisor portion of the operating system (known as kernel) is loaded in the RAM from the disk. This process to start or restart a computer is called the booting process.
User interface: User interface means how the user interacts with the computer to perform various tasks. The user runs the application programs, opens the document, enters the data, and prints the output reports.
Running Programs: The operating system also provides the interface between the programs and the user. Through a program, the user accesses other computer resources such as printers, backing storage, or other application programs.
Managing Files: The data and programs are stored permanently on the disk for future use.
Memory Management: The memory unit has a very important role in data processing. The processor takes data and program instructions from RAM during processing. The data and programs are loaded from disk into RAM.
Scheduling Jobs: A job is an activity or operation that a processor performs. It may be receiving data from an input device, sending output to an output device or loading data from the disk into RAM.
See lessWhat is a Computer?
computer is a very high-speed electronic device
computer is a very high-speed electronic device
See lessDefine An alkali?
An alkali is a soluble base. OR An alkali is a substance which when dissolved in water produces hydroxide ions as the only negatively charged ions in solution. Examples are Sodium hydroxide, Potassium hydroxide, Ammonium hydroxide and calcium hydroxide.
An alkali is a soluble base.
OR
An alkali is a substance which when dissolved in water produces hydroxide ions as the only negatively charged ions in solution. Examples are Sodium hydroxide, Potassium hydroxide, Ammonium hydroxide and calcium hydroxide.
See lessWhat is an indicator?
An indicator has one definite colour in an acidic solution and another definite colour in an alkaline solution
An indicator has one definite colour in an acidic solution and another definite colour in an alkaline solution
See lessA base
A base is a substance that reacts with an acid to form salt and water only
A base is a substance that reacts with an acid to form salt and water only
See lessIdentify types of soil samples
Loam soil is a mixture of sand about 40%, clay 15% and organic matter 1-4%. It is dark and has a stable crumb structure Clay soil is heavy and has fine particles with a sticky feel when wet. Sandy soil is light and has a gritty when wet
Loam soil is a mixture of sand about 40%, clay 15% and organic matter 1-4%. It is dark and has a stable crumb structure
Clay soil is heavy and has fine particles with a sticky feel when wet.
Sandy soil is light and has a gritty when wet
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