Question Discussion & Solution

The correct answer is a Female egg cell.

The female egg cell is the largest cell in the human body. The nerve cell is the longest cell in the body.

• The egg cell or ovum is the largest cell in the human body.
• It has a diameter of about 0.1 mm.
• A nerve cell is the longest cell in the human body.
• Muscle cells are the primary cells responsible for the movement of the body. There are three types of muscle cells found in our body, namely ;
  • Skeletal muscle or voluntary muscle.
  • Smooth muscle or involuntary muscle.
  • Cardiac muscle.

Mistake Points

• The smallest cell is Mycoplasma (PPLO-Pleuro pneumonia-like organisms).
• It is about 10 micrometres in size.
• The largest cell is an egg cell of ostrich.
• The longest cell is the nerve cell.
• The largest cell in the human body is the female ovum.
• The smallest cell in the human body is the male gametes, that is, sperm.

The correct answer is Operating system.

Key Points

• UBUNTU is an example of an operating system.
• The operating system is a collection of programs that controls the overall operations of the computer.
• Operating systems are of two types namely, Open-source operating systems and Closed source operating systems.
• UBUNTU is free and open-source software.
• Operating systems works as an interface between a user and computer hardware components.
• Examples of operating systems are:
  • Linux
  • Unix
  • DOS
  • Windows
  • Ubuntu
  • Embedded operating system
  • OpenBSD
  • Mac OS

Additional Information

• Malware is a file or code that is designed to damage and destroy computers and computer systems.
  • Viruses, worms, Trojan viruses, spyware are the common examples of malware.
• A web browser is an application used to access and view websites.
  • Google Chrome, Mozilla Firefox, Apple Safari are the common examples of web browsers.

The correct answer is Memory.

Key Points

• The memory mapping process is handled by the virtual memory manager, which is the same subsystem responsible for dealing with the page file.
• Memory-mapped files are loaded into memory one entire page at a time.
• The page size is selected by the operating system for maximum performance. 

Additional Information

• A memory
  • It is just like a human brain.
  • It is used to store data and instructions. 
  • Computer memory is the storage space in the computer, where data is to be processed and instructions required for processing are stored.
  • The memory is divided into a large number of small parts called cells.
• Process
  • It is the instance of a computer program that is being executed by one or many threads.
  • It contains the program code and its activity.
  • Depending on the operating system, a process may be made up of multiple threads of execution that execute instructions concurrently.
• A computer file
  • It is a computer resource for recording data in a computer storage device.
  • Just as words can be written to paper, so can data be written to a computer file.
  • Files can be edited and transferred through the Internet on that particular computer system.
• Computer security
  • cybersecurity or information technology security is the protection of computer systems and networks from information disclosure, theft of or damage to their hardware, software, or electronic data, as well as from the disruption or misdirection of the services they provide.

Information systems hardware is the part of an information system one can touch i.e. the physical components of the technology.

Computers, keyboards, disk drives, iPads, and flash drives are all examples of information systems hardware.

The correct answer is CTRL + F2.

• Print Preview is a feature that displays on the screen what a hard copy would look like when printed.
  • Press Ctrl + F2 to open the print preview for the document.
  • By using the print preview, you can find any errors that may exist or fix the layout before printing, which can save ink or toner and paper by not having to print more than once.

Additional Information

• To open the print preview feature, click the print preview icon on the toolbar, like that shown in the picture, or click File and choose the Print Preview option.
• Some programs, like newer versions of Microsoft Office applications, show a print preview on the Print page.
• In these cases, there is no Print Preview option in the program's menu.
• Many programs do not have a shortcut key for the print preview feature.
• However, you can press Alt+F to open the file menu and press V, R, or the other underlined character (Mnemonic) for the Print Preview option.
• In programs like Microsoft Word, while in the print preview, you can change the page orientation from Portrait Orientation to Landscape.
• Orientation to view the page in landscape.
• Unfortunately, not all programs support this ability.
• If the program you're using has no settings or options in print preview, you cannot view how your page would print in landscape mode.