Computer 1-50 MCQs

Computer

1. The term 'Computer' is derived from ________ ?

a. Latin

b. German

c. French

d. Arabic

2. Who is the father of Computer?

a. Allen Turing

b. Charles Babbage

c. Simur Cray

d. Augusta Adaming

3. The basic operations performed by a computer are _______ ?

a. Arithmetic operation

b. Logic operation

c. Storage and relative

d. All the above

4. Who is the father of Internet ?

a. Charles Babbage

b. Vint Cerf

c. Denis Riche

d. Martin Cooper

5. If a computer has more than one processor then it is known as ________ ?

a. Uni-process

b. Multiprocessor

c. Multi-threaded

d. Multi-programming

6. A light sensitive device that converts drawing, printed text or other images into digital form is ________ ?

a. Keyboard

b. Scanner

c. OMR

d. None of these

7. WWW stands for ________ ?

a. World Whole Web

b. Wide World Web

c. Web World Wide

d. World Wide Web

8. A collection of system programs that controls and co-ordinates the overall operations of a computer system is called ________ ?

a. System software

b. Operating system

c. Utility program

d. Device driver

9. What type of operating system MS-DOS is?

a. Command Line Interface

b. Graphical User Interface

c. Multitasking

d. Menu Driven Interface

10. Which technology is used in compact disks?

a. Mechanical

b. Electrical

c. Electro Magnetic

d. Laser

11. 1 Gigabyte is equal to ________ ?

a. 1024 bits

b. 1032 megabytes

c. 1024 kilobytes

d. 1024 megabytes

12. The brain of any computer system is ________ ?

a. ALU

b. Memory

c. CPU

d. Control unit

13. Which of the following are components of Central Processing Unit (CPU) ?

a. Arithmetic logic unit, Mouse

b. Arithmetic logic unit, Control unit

c. Arithmetic logic unit, Integrated Circuits

d. Control Unit, Monitor

14. Analog computer works on the supply of ________ ?

a. Continuous electrical pulses

b. Electrical pulses but not continuous

c. Magnetic strength

d. None of the above

15. Which one is Digital device, select from the choices below?

a. Digital Clock

b. Automobile analog speed meter

c. Clock with a dial and two hands

d. All of them

16. The computer that process both analog and digital is called ________ ?

a. Analog computer

b. Digital computer

c. Hybrid computer

d. Mainframe computer

17. CD-ROM stands for ________ ?

a. Compactable Read Only Memory

b. Compact Data Read Only Memory

c. Compactable Disk Read Only Memory

d. Compact Disk Read Only Memory

18. ALU is ________ ?

a. Arithmetic Logic Unit

b. Array Logic Unit

c. Application Logic Unit

d. None of above

19. VGA is _________ ?

a. Video Graphics Array

b. Visual Graphics Array

c. Volatile Graphics Array

d. Video Graphics Adapter

20. MSI stands for ________ ?

a. Medium Scale Integrated Circuits

b. Medium System Integrated Circuits

c. Medium Scale Intelligent Circuit

d. Medium System Intelligent Circuit

21. WAN stands for _______ ?

a. Wap Area Network

b. Wide Area Network

c. Wide Array Net

d. Wireless Area Network

22. What is the main difference between a mainframe and a super computer?

a. Super computer is much larger than mainframe computers

b. Super computers are much smaller than mainframe computers

c. Supercomputers are focused to execute few programs as fast as possible while mainframe uses its power to execute as many programs concurrently

d. Supercomputers are focused to execute few programs as fast as possible while mainframe uses its power to execute few programs as fast as possible

23. ________ is called the father of modern digital computer?

a. Allen Turing

b. Blaise Pascal

c. Charles Babbage

d. J.H Muller

24. Who is the father computer science?

a. Allen Turing

b. Charles Babbage

c. Simur Cray

d. Augusta Adaming

25. A CPU contains _______ ?

a. a card reader and a printing device

b. an analytical engine and a control unit

c. a control unit and an arithmetic logic unit

d. an arithmetic logic unit and a card reader

26. Which of the following controls the process of interaction between the user and operating system?

a. User interface

b. Language translator

c. Platform

d. Screen saver

27. The first computers were programmed using _________ ?

a. Assembly language

b. Machine language

c. Source code

d. Object code

28. _________ is a combination of hardware and software that facilitates the sharing of information between computing devices.

a. Network

b. Peripheral

c. Expansion board

d. Digital device

29. Coded entries which are used to gain access to a computer system are called ________ ?

a. Entry codes

b. Passwords

c. Security commands

d. Code words

30. Which of the following statements is true about minicomputer and microcomputer?

a. Minicomputer works faster than Microcomputer

b. Microcomputer works faster than Minicomputer

c. Speed of both the computers is the same

d. The speeds of both these computers cannot be compared with the speed of advanced

31. You can organize files by storing them in ________ ?

a. achieves

b. folders

c. indexes

d. lists

32. What type of resource is most likely to be a shared common resource in a computer Network?

a. Printers

b. Speakers

c. Floppy disk drives

d. None of these

33. Which device is required for the Internet connection?

a. Joystick

b. Modem

c. CD Drive

d. NIC Card

34. What is a light pen?

a. A Mechanical Input device

b. Optical input device

c. Electronic input device

d. Optical output device

35. UNIVAC is _________ ?

a. Universal Automatic Computer

b. Universal Array Computer

c. Unique Automatic Computer

d. Unvalued Automatic Computer

36. The capacity of 3.5 inch floppy disk was ________ ?

a. 1.40 MB

b. 1.44 GB

c. 1.40 GB

d. 1.44 MB

37. MICR stands for ________ ?

a. Magnetic Ink Character Recognition

b. Magnetic Ink Code Reader

c. Magnetic Ink Cases Reader

d. None of these

38. EBCDIC stands for ________ ?

a. Extended Binary Coded Decimal Interchange Code

b. Extended Bit Code Decimal Interchange Code

c. Extended Bit Case Decimal Interchange Code

d. Extended Binary Case Decimal Interchange Code

39. Which of the following is a part of the Central Processing Unit?

a. Printer

b. Key board

c. Mouse

d. Arithmetic & Logic unit

40. CAD stands for _______ ?

a. Computer Aided Design

b. Computer Algorithm for Design

c. Computer Application in Design

d. Computer Analogue Design

41. Junk e-mail is also called ________ ?

a. spam

b. spoof

c. sniffer script

d. spool

42. Which statement describe "Hackers"?

a. all have the same motive

b. break into other people's computers

c. may legally break into computers as long as they do not do any damage

d. are people who are allergic to computers

43. What type of computers are client computers (most of the time) in a client-server system?

a. Mainframe

b. Mini-computer

c. Microcomputer

d. PDA

44. A computer cannot 'boot' if it does not have the ________ ?

a. Compiler

b. Loader

c. Operating System

d. Assembler

45. The amount of vertical space between lines of text in a document is called ________ ?

a. double-space

b. line spacing

c. single space

d. vertical spacing

46. Example of non-numeric data is ________ ?

a. Employee address

b. Examination score

c. Bank balance

d. All of these

47. What is embedded system?

a. The programme which arrives by being wrapped in box

b. The programme which is the permanent part of the computer

c. The computer which is the part of a larger system or machine

d. The computer and software system that control the machine

48. When a file is saved for the first time?

a. a copy is automatically printed

b. it must be given name to identify it

c. it does not need a name

d. it only needs a name if it is not going to be printed

49. Where are data and programme stored when the processor uses them?

a. Main memory

b. Secondary memory

c. Disk memory

d. Programme memory

50. ________ represents raw facts, where-as ________ is data made meaningful?

a. Information, reporting

b. Data, information

c. Information, bits

d. Records, bytes

Biology 501-550 MCQs

Biology

501. Puccinia is a parasitic ________ ?

a. Plant

b. Fungus

c. Animal

d. Algae

502. An illness which largely affects girls usually just after the onset of puberty.

a. Bulimia nervosa

b. Obesity

c. Anorexia nervosa

d. None of these

503. Autotrophic organisms can exist in an exclusively ________ environment?

a. Organic

b. Inorganic

c. Wet

d. Terrestrial

504. Loss of appetite due to the fear of becoming obese is ________ ?

a. Anorexia nervosa

b. Bulimia nervosa

c. Piles

d. Dyspepsia

505. Strong chlorosis is due to the deficiency of _________ in plants?

a. Magnesium

b. Nitrogen

c. Potassium

d. Phosphorus

506. Stunted growth of roots is due to the deficiency of ________ in plants?

a. Potassium

b. Magnesium

c. Phosphorus

d. Iron

507. The liquid that escapes during defrosting frozen meat contains ________ bacteria?

a. Campylobacter

b. Nitrobacter

c. Azobacter

d. Salmonella

508. One of the commonest cause of food poisoning are the toxins produced by ________ ?

a. Azobacter

b. Nitrosomonas

c. Campylobacter

d. Nitrobacter

509. Puccinia commonly destroys _______ ?

a. Corn

b. Tomato

c. Dodder

d. Wheat

510. Nodules on roots of leguminous plants have _________ bacteria?

a. Anaerobic

b. Nitrogen fixing

c. Nitrifying

d. Ammonifying

511. Earthworm is an example of ________ feeder?

a. Detritus

b. Fluid

c. Microphagous

d. Filter

512. All of the insectivorous plants are true ________ ?

a. Heterotrophs

b. Autotrophs

c. Carnivores

d. Saprotrophs

513. Of the following, which one has more variety of nutrition ________ ?

a. Animals

b. Bacteria

c. Plants

d. Fungi

514. Incomplete or imperfect digestion is known as ________ ?

a. Obesity

b. Dyspepsia

c. Anorexia nervous

d. Bulimia nervosa

515. The leaf is bilobed with midrib between them. The plant is ________ ?

a. Saraccnia

b. Dionaea

c. Pitcher plant

d. None of these

516. Anus is surrounded by _______ types of muscles?

a. 2

b. 3

c. 1

d. 4

517. Of the following, which one is missing in herbivores ________ ?

a. Premolars

b. Canines

c. Incisors

d. Molars

518. Certain types of whales are also ________ feeder?

a. Fluid

b. Macrophagous

c. Filter

d. None of these

519. ________ is about 2.4 meter in length and compromising about two fifth of the small intestine?

a. Duodenum

b. Jejunum

c. Ileum

d. Caecum

520. Hydra is an example of _______ feeder?

a. Fluid

b. Macrophagous

c. Filter

d. All of these

521. Hepatic and Pancreatic secretions are also stimulated by a hormone produced by the intestinal mucosa. The hormone is ________ ?

a. Creatin

b. Gastrin

c. Secretin

d. Pepsin

522. Parasites capable of living independently of its host at times is called as _______ parasite?

a. Obligate

b. Strict

c. Facultative

d. Endoparasite

523. A painful burning sensation produced in the chest cavity usually associated with the back flush of acidic chyme into the esophagus is ________ ?

a. Pyrolysis

b. Pyrosis

c. Peristalsis

d. Dyspepsia

524. In planaria, numerous small branches which end blindly are called as _______ ?

a. Digestive tract

b. Intestinal caeca

c. Hepatic caeca

d. Both B & C

525. Midgut in cockroach is a short narrow tube called _______ ?

a. Hepatic caeca

b. Gizzard

c. Stomach

d. Rectum

526. Hunger contractions are ________ contractions?

a. Antiperistalsis

b. Peristalsis

c. Voluntary

d. None of these

527. The partly digested food is stored in ________ in cockroach?

a. Gizzard

b. Crop

c. Hepatic caeca

d. Rectum

528. How many species of fungi are known till now?

a. 10000

b. 100000

c. 10000000

d. 1000

529. Which of the following group represent pathological fungi ________ ?

a. Mushrooms morels and truffles

b. Rusts smuts and molds

c. Penicillium

d. All of these

530. Death cap/death angel (Amanita) and Jack O Lantern mushroom are examples of _______ ?

a. Edible mushrooms

b. Poisonous mushrooms

c. Both of these

d. None of these

531. Which one of the following is different from all the rest regarding the number of cells in its body ________ ?

a. Rusts

b. Mushrooms

c. Molds

d. Yeasts

532. Fungi which get their food directly from dead organic matter are called _______ ?

a. Parasitic fungi

b. Predators

c. Mutualists

d. Decomposers

533. How many species of mushrooms are edible?

a. 100

b. 200

c. 3000

d. 4000

534. Root like structure in saprotrophic fungi are called _______ ?

a. Rhizoids

b. Haustoria

c. Hyphae

d. Constricting rings

535. Penicillium reproduce via ________ ?

a. Spores

b. Conidia

c. Budding

d. Fragmentation

536. Those fungi which can grow only on their living host and cannot be grown on available defined growth culture medium e.g. various mildews and most rust species are called ________ ?

a. Parasitic fungi

b. Obligate parasitic fungi

c. Facultative parasitic fungi

d. All of these

537. Mode of nutrition in penicillium is ________ ?

a. Saprotrophs

b. Parasitic

c. Predators

d. Mutualistic

538. Oyster mushroom is an example of predator fungi which attack on ________ ?

a. Pin warms

b. Tape worms

c. Round worms

d. Platyhelminthes

539. Lichen is a symbiotic mutualistic association of fungi with ________ ?

a. Autotrophs

b. Roots of vascular plants

c. Green algae and cyanobacterium

d. Leguminous plants

540. Foliose lichen are ________ ?

a. Stem like

b. Branching

c. Leaf like

d. Crust like

541. How many species of Ascomycota occur in lichen symbiotic association?

a. 30%

b. 40%

c. 50%

d. 60%

542. An association in which fungal hyphae penetrate the outer cells of the plant root forming coils swelling and minute branches and also extend out into surrounding soil is called ________ ?

a. Mycorrhizal association

b. Endomycorrhizae

c. Ectomycorrhizae

d. Lichen

543. Which one of the following is the largest group of fungi?

a. Zygomycota

b. Ascomycota

c. Basidiomycota

d. Deuteromycota

544. The Kingdom of recyclers is known as kingdom ________ ?

a. Algae

b. Bacteria

c. Fungi

d. Embryophyta

545. According to two kingdom classification fungi were placed in kingdom ________ ?

a. Plantae

b. Animalia

c. Protista

d. Fungi

546. At which stage in the life cycle of Rhizopus meiosis takes place?

a. Formation of sporangiophore via germination of zygospore

b. Formation of spores in sporangia

c. Fusion of two hyphae

d. Formation of Zygote by fusion of gametangia

547. Ecological role of fungi as decomposers is only paralleled by ________ ?

a. Cyanobacteria

b. Blue green algae

c. Bacteria

d. Virus

548. Which of the following is called black bread mold?

a. Pilobolus

b. Penicillium

c. Neurospora

d. Rhizopus

549. Coenocytic hyphae are also known as ________ ?

a. Septate

b. Perforated hyphae

c. Aseptate

d. Uninucleate hyphae

550. In which of the following example of fungi dikaryotic hyphae exist for long period?

a. Deuteromycota

b. Basidiomycota

c. Zygomycota

d. All of these

Biology 451-500 MCQs

Biology

451. Which of the following organisms have Chitin as a major structural component of their cell wall _______ ?

a. Prokaryotae

b. Protoctista

c. Plantae

d. Fungi

452. All of the following are involved in nitrification except?

a. Nitrobacter

b. Nitrosomonas

c. Rhizobium

d. All of these

453. DNA or RNA of viruses is enclosed in ________ coat?

a. Protein

b. Carbohydrate

c. Lipid

d. DNA

454. In most ecosystems the greatest amount of energy flows through the _______ ?

a. Secondary consumers

b. Herbivores

c. Carnivores

d. Decomposers

455. Which of the following relationship is NOT an example of symbiosis?

a. Rhizobium and leguminous plants

b. Marchantia sporophyte and gametophyte

c. Algae and fungi in a lichen

d. Mycorrhizal fungi and tree roots

456. Other name for Kingdom monera is ________ ?

a. Protoctista

b. Prokaryotae

c. Archaea

d. None of these

457. Animals with greatest number of similarities are grouped together in a/an ________ ?

a. Phylum

b. Family

c. Genus

d. Order

458. Amoeba belongs to which kingdom _______ ?

a. Prokaryotae

b. Plantae

c. Monera

d. Protista

459. Competition between species will be greatest if they attempt to occupy the same ________ ?

a. Ecosystem

b. Community

c. Habitat

d. Niche

460. The one which is present in all aerobic species is ________ ?

a. Cytochrome c

b. Cytochrome a

c. Cytochrome a3

d. Cytochrome b

461. The word virus is derived from Latin word venom meaning ________ ?

a. Sweet Fluid

b. Sore Fluid

c. Poisonous Fluid

d. Salty Fluid

462. The size of smallest virus is ________ ?

a. 10 nm

b. 20 nm

c. 30 nm

d. 40 nm

463. What percentage of light reaching the earth is used in photosynthesis?

a. 25%

b. 10%

c. 5%

d. 1%

464. Viruses are ________ smaller than bacteria?

a. 10 - 100 times

b. 10 - 1000 times

c. 100 - 1000 times

d. 1000 - 10000 times

465. Kangaroo rat most probably would be found in ________ ?

a. Tropical rain forest

b. Tundra

c. Grass land

d. Desert

466. Vaccine was discovered by ________ ?

a. Louis Pasteur

b. Edward Jenner

c. Ivanovski

d. Stanley

467. The name Bacteriophage was coined by ________ ?

a. Charles Chamberland

b. Ivanovski

c. Frederic Twort

d. D Herelle

468. Protein subunits of capsid is called the capsomeres is a characteristic of each virus. Their number in Herpes virus is _______ ?

a. 100

b. 152

c. 162

d. 172

469. Which of the statement about viruses is incorrect _________ ?

a. We can not grow them in laboratories on artificial medias

b. They are obligate intracellular parasite

c. They can synthesize their nucleic acid

d. They are resistant to most of antibiotic treatment

470. A virion is _______ ?

a. Virus

b. Viral protein

c. Viral lysozyme

d. Viral gene

471. For which of the following no preventive vaccine is available?

a. HAV

b. HBV

c. HCV

d. HEV

472. Which one of the following specially result in chronic liver disease leading to hepatic failure:

a. HAV

b. HBV

c. HCV

d. HEV

473. Protein coat the capsid of adenovirus is ________ ?

a. Surrounded by genome

b. Surrounding genome

c. Surrounding the envelop

d. Both B and C

474. Mode of transmission of hepatitis A is ________ ?

a. Serum

b. Faeco-oral

c. Sexual contact

d. All of these

475. Attachment of the bacteriophage with the receptor site on the bacterial cell wall involves _______ ?

a. Strong covalent bond between virion and the receptor site

b. Week chemical union between them

c. Both A and B depending upon the phage

d. None of these

476. Which of the following statement about AIDS is incorrect:

a. is a host specific disease

b. An infected mother cannot pass the virus to her baby

c. Results in enlargement of lymph nodes

d. Can be prevented

477. Bacteriophage that infect E.coli are called _______ ?

a. M type

b. N type

c. T type

d. S type

478. Complex symptoms like severe pneumonia vascular tumor sudden weight loss swollen lymph nodes and immune deficiency are features of:

a. Polio

b. Hepatitis

c. AIDS

d. HIV

479. An isolated virus is not considered living since it _______ ?

a. Separates in to two inner parts

b. Can not metabolize

c. Rapidly looses its Genome chemical inert

d. Is coated with an air tight shield

480. Which of the following is the smallest known virus:

a. Hepatitis virus

b. Retrovirus

c. Polio virus

d. Pox virus

481. The agent of controversial nature causing mad cow infection is _________ ?

a. Bacteria

b. Cowpox Virus

c. Adenovirus

d. Prion

482. Which of the following virus has special affiliations with the tumor production:

a. Hepatitis virus

b. Retrovirus

c. Polio virus

d. Pox virus

483. Which of the following is incorrect for the lysogenic cycle in life cycle of bacteriophage _________ ?

a. Phage when gets incorporated with the bacterial chromosome is called prophage

b. The bacterium continues to live and reproduce normally

c. Lysogenic bacteria may get infected by the related phage

d. The cycle may convert into lytic type resulting from environmental exposure

484. An enzyme which can convert single stranded RNA into double stranded viral DNA is called _________ ?

a. DNAase

b. RNAase

c. DNA polymerase

d. Reverse Transcriptase

485. In lysogenic cycle the process of separation of phage DNA from the hosts chromosome and initiation of lytic cycle is called ________ ?

a. Lysis

b. Lysogeny

c. Induction

d. Adsorption

486. Which of the following disease results in Paralysis due to viral attack on C.N.S:

a. Measles

b. Herpes simplex

c. Hepatitis

d. Polio

487. In life cycle of bacteriophage which step occur after attachment of prophage with the receptor site of the bacterial cell wall ________ ?

a. Absorption

b. Multiplication

c. Lysogeny

d. Penetration

488. Tobacco mosaic virus is ________ ?

a. Spherical

b. Rod Shaped

c. Tadpole like

d. Hexagonal

489. In the Lysogenic cycle the DNA of the bacteriophage _______ ?

a. Joins the bacterial chromosomes

b. Attaches to the inner surface of the host membrane

c. Is immediately degraded when enters the host

d. Goes directly to host ribosomes for translation

490. Which of the following is an RNA virus:

a. Influenza virus

b. Herpes virus

c. HBV

d. Pox virus

491. Temperate phage may exist as ________ ?

a. Prophage

b. Capsid

c. Viron

d. Retrovirus

492. In the lytic cycle of bacteriophage the host DNA is ________ ?

a. Replicated

b. Turn off by the protein coat

c. Digested into its nucleotides

d. Turned on by the removal of the protein coat

493. Pepsinogen is produced from ________ ?

a. Mucous cells

b. Parietal cells

c. Zymogen cells

d. All of these

494. Carbohydrates, fats & proteins are essential for ________ ?

a. Metabolic processes of an organism

b. Providing energy

c. Formation of structures

d. All of these

495. Dipeptides into amino acids are converted through _______ ?

a. Amino peptidase

b. Erypsin

c. Pepsin

d. Trypsin

496. Magnesium is present in which of the following ________ ?

a. Cytochromes

b. ATP

c. Chlorophyll

d. Haemoglobin

497. Deficiency of which of the following causes chlorosis _________ ?

a. Nitrogen

b. Magnesium

c. Iron

d. Both A and B

498. Mastication is carried out by ________ ?

a. Teeth

b. Tongue

c. Smooth muscles

d. All of these

499. Deficiency of K+ causes ________ ?

a. Stunted growth & strong chlorosis

b. No electron transport chains

c. Premature death of leaves

d. Stunted growth of roots

500. Masses of dilated tortuous veins in the anorectal mucosa are known as _______ ?

a. Bulimia

b. Ulcer

c. Adipose tissue

d. Hemorrhoids