Biology MCQs Online Quiz Test 27

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In every year MCAT and MDCAT new admissions are announced in all over the world. But here you will learn entry test Preparation MCQS for Biology. These MCAT and MDCAT MCQs Preparation question answers are important for upcoming jobs tests. You have to need learn these entry tests Multilple Choice Objective type quiz questions with answers online. Many of these MCQs are also repeated mostly in every year and you will easily learn here all MCQs online.
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Online MDCAT Biology MCQs With Solved Answers

Q.1: Which of the following statements is incorrect about skeletal muscle fibers?

  1. They are multinucleated.
  2. They are 10 – 100 ?m in diameter And surrounded by sarcolemma
  3. They contain O2 storing molecules called hemoglobin.
  4. Their cytoplasm contains high concentration of carbohydrates

C

Q.2: Gibberellins is an example of———?

  1. Growth inhibitor
  2. Growth stimulator
  3. Growth hormone
  4. None of these

B

Q.3: A smallest contractile unit of muscle contraction called sarcomere is the area between two:?

  1. H- zone
  2. M- Line
  3. Z- Line
  4. A band

C

Q.4: Which of the following animal has a hydrostatic skeleton?

  1. Earthworm
  2. Round worm
  3. Tape worm
  4. Pin worm

A

Q.5: Diameter of thick filament is——?

  1. 7 nm.
  2. 8 nm
  3. 16nm
  4. 10-100 ?m.

C

Q.6: In an annelids, the contraction of circular muscle results in——?

  1. Lengthening of the body.
  2. Shortening of the body.
  3. Widening of body
  4. Thinning of body

D

Q.7: It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect:?

  1. Older sediment layers have equal amount of these reaioactive isotopes as that of the young ones
  2. Older sediment layers have less amount of these reaioactive isotopes as that of the young ones.
  3. Older sediment layers have greater amount of these radioactive isotopes as that of the young ones.
  4. Older sediment layers did not have these radioactive isotopes

B

Q.8: Reverse transcriptase is present in——?

  1. All RNA viruses
  2. All DNA viruses
  3. All retroviruses
  4. All viruses

C

Q.9: Destruction of all life forms is called——?

  1. Sterilization
  2. Disinfection
  3. Antisepsis
  4. Preservation

A

Q.10: Pox viruses are—–?

  1. RNA non-enveloped
  2. RNA enveloped
  3. DNA non-enveloped
  4. DNA enveloped

D