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MCQs4All - Biology MCQs for NTS, FPSC, CSS, IELTS, TOEFL

Question. In all arthropods,the body is covered with a chittinous cuticle which is secreted by the____________?
  1. Endodermis
  2. Mesophyll
  3. Chitin
  4. Epidermis
Question. Double fertilization occurs in_________?
  1. All plants
  2. All seed plants
  3. Gymnosperms
  4. Angiosperms
Question. Purines and pyrimidines are in equal ration in DNA. It was indicated by_______________?
  1. F.Miescher
  2. Chargaff
  3. Watson & Crick
  4. Harshay & Chase
Question. Animals obtain carbohydrates mainly from___________?
  1. Glucose
  2. Starch
  3. Sucrose
  4. Glycogen
Question. Excessive increase in temperature of medium causes the enzyme molecule to____________?
  1. Activate
  2. Unaffected
  3. Denatured
  4. None of these
Question. Of the following which one is not found in series proterostomia?
  1. Annelida
  2. Arthropoda
  3. Mollusea
  4. Echinodermata

Biology MCQs for NTS, FPSC, CSS, PPSC, PMS, UTS, FTS, OTS, Teaching, CT, PTC, SST, B.Ed, M.Ed of past papers
Question. Deoxygenated blood first enters in _________ part in fishes?
  1. Sinus venosus
  2. Right atrium
  3. Left atrium
  4. Conus arteriosus
Question. The survival of an animal depends upon its ability to take some from its environment____________?
  1. Chemicals
  2. Hydrocarbons
  3. Organic molecules
  4. Inorganic molecules
Question. The membrane of vacuoles is known as__________?
  1. Vacuoloplast
  2. Tonoplast
  3. Tanoplast
  4. All of these
Question. Gaseous exchange through the skin is known as ______________ respiration?
  1. Cuticular
  2. Cutaneous
  3. Skin
  4. Pulmonary
Question. Ribose is an example of___________?
  1. Trioses
  2. Tetroses
  3. Pentose
  4. Hexose
Question. Example of bacteria requiring low concentration of oxygen is__________?
  1. Campylobactor
  2. spirocheta
  3. E-coli
  4. Pseudomonas
Question. An enzyme which can convert single stranded RNA into double stranded viral DNA is called____________?
  1. DNAase
  2. RNAase
  3. DNA polymerase
  4. Reverse Transcriptase
Important MCQs
Question: Earths most snow covered area (SCA) is located in
Question: Plasma is used in_________________?
Question: It is the discharge of blood from blood vessels?
Question: The first eukarotes appeared about __________ years ago?
Question: How many state owned shipping fleet does Pakistan have?
Question: The Second Pillar of Islam is?
Question: The study of science of population is called :
Question: The resolution for establishing All India Muslim League was passed at
Question: Mahmood breathed his last sigh on 30 April ______
Question: Malaria is associated with___________?
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