Tuesday, 2 April 2019

All Biology Quiz Tests Online MCQs Solved MCAT Test Here

MCQ Quiz Test of Biology Here Learning Biology through MCQs Online Quiz Tests. All Biology Multiple Choice Questions and Answers for Different Competitive Exams Home Biology MCQs Practice Here with Solved Excercise. All Solved biology mcqs for MCAT test preparations Online With Quiz tests. All Classes 9th, 10th, 11th, 12th, MCAT, MBBS Jobs tests for PPSC Tests of Biology Preparation With Online Quiz.


All Solved MCQs Biology
Solved MCAT Quiz


Question 1: The branch of Biology which deals with the use of data and techniques of engineering & technology concerning living organisms is ?

  1. Human Biology
  2. Environmental Biology
  3. Genetics
  4. Bio-technology

D

Question 2: On the basis of collected facts and figures, a scientist formulates a factitive statement called ?

  1. Observation
  2. Research work
  3. Hypothesis
  4. Inductive Reasoning

C

Question 3: Immunization by vaccination was first introduced by ?

  1. Fleming in 1945
  2. Florey & Chain in 1975
  3. Flore & Chain in 1795
  4. Edward Jenner in 1795

D

Question 4: The branch of biology which deals with the study of social behavior and communal life of human beings living in any environment is called ?

  1. Environmental biology
  2. Social biology
  3. Human biology
  4. Both b and c

B

Question 5: Group of living organisms of the same species living in the same place at the same time is called ?

  1. Community
  2. Population
  3. Ecosystem
  4. Biome

B

Question 6: Starch is converted into maltose by ?

  1. diastase
  2. invertase
  3. maltase
  4. amylase

A

Question 7: Fungi resemble plants because they lack---------- ?

  1. Cell wall
  2. Cytoplasm
  3. Centriole
  4. Nucleus

C

Question 8: Nitrogen is present in---------- ?

  1. carbohydrates
  2. proteins
  3. lipids
  4. carbonates

B

Question 9: The term biology was introduced in---------- in 1800 ?

  1. Germany
  2. Turkey
  3. Italy
  4. Japan

A

Question 10: Density gradient centrifugation separates the materials on the basis of-------- ?

  1. Size alone
  2. Density alone
  3. Both a & b
  4. Velocity of movement

C

Question 11: The study of nature is called--------- ?

  1. Science
  2. Atom
  3. Molecule
  4. Element

A

Question 12: In 1831, the presence of nucleus in the cells was reported by-------- ?

  1. Robert Koch
  2. Robert Hooke
  3. Robert Mug Abe
  4. Robert Brown

D

Question 13: A chemical substance that reacts with enzyme but is not transformed into product and thus blocking active site is called-------- ?

  1. Substrate
  2. Co-factor
  3. Inhibitor
  4. Promotor

C

Question 14: ---------- is the potential surce of chemical energy for cellular activities ?

  1. C-H bond
  2. C-O bond
  3. C-N bond
  4. P-O-C bond

A

Question 15: Reverse transcriptase is present in----------- ?

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

C

Question 16: Red to orange pigments are------------ ?

  1. Carotenes
  2. Carotenoids
  3. Xanthophylls
  4. Chlorophyll

A

Question 17: Which of the following is most constant abiotic component of ecosystem---------- ?

  1. Air
  2. Water
  3. Land
  4. Gravity

D

Question 18: Yellowish glandular structure which produces progesterone is---------- ?

  1. Graffian follicle
  2. Ovary
  3. Corpus luteum
  4. Placenta

C

Question 19: Lock and Key model was proposed by------------ ?

  1. Emil Fischer
  2. Koshland
  3. Robin Williams
  4. Rudolph Virchow

A

Question 20: A cofactor made of inorganic ion which is detachable is called-------------- ?

  1. Prosthetic group
  2. Coenzyme
  3. Activator
  4. Cofactor

C

Question 21: In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon------- ?

  1. Their physical properties like size & weight.
  2. Physical properties of the medium like its density.
  3. Their electrical properties like their charges
  4. Both a and b

D

Question 22: Optimal temperature of enzymes present in human body is---------- ?

  1. 27?C
  2. 37?C
  3. 47?C
  4. 30?C

B

Question 23: The property of water due to which it works as a temperature stabilizer and hence protect living organisms from sudden thermal changes is--------- ?

  1. High specific heat of vaporization
  2. High specific heat capacity
  3. Its Dipole nature
  4. Its liquid state

B

Question 24: Which of the statement is not true for compounds like glycoprotein and glycolipids--------- ?

  1. They are conjugated molecules of carbohydrates
  2. Both have role in the extra cellular matrix of animals and bacterial cell wall
  3. They are components of biological membranes.
  4. Both are produced and secreted by endoplasmic reticulum

D

Question 25: Lipid molecules can store double amount of energy as compared to same amount of carbohydrate because of high number of----------- ?

  1. C-C bonds
  2. C-H bonds
  3. C-N bonds
  4. C-O bonds

B

Question 26: In an aqueous environment the most stable tertiary conformation is that in which --------- amino acids are buried inside the conformation ?

  1. Hydrophobic
  2. Hydrophilic
  3. Basic
  4. None of these

A

Question 27: In Glycin an amino acid R group is replaced by---------- ?

  1. H
  2. CH3
  3. COOH
  4. C = O

A

Question 28: The trioses which are intermediate in respiration and photosynthesis are---------- ?

  1. Glyceraldehydes
  2. Dihydroxy acetone
  3. Both of these
  4. None of these

C

Question 29: Which one of the following stage preceeds mitosis during cell cycle ?

  1. G1 phase
  2. S phase
  3. G2 phase
  4. M phase

C

Question 30: Which of the Euglenas (a Protoctista) character resembles that of animals---------- ?

  1. They can move
  2. They lack cell wall
  3. They do not have chlorophyll
  4. Both a and b

D

Question 31: What is the characteristic feature of consumers ?

  1. Autotroph
  2. Heterotroph
  3. Parasite
  4. Saprophyte

B

Question 32: The size of smallest virus is----------- ?

  1. 10 nm
  2. 20 nm
  3. 30 nm
  4. 40 nm

B

Question 33: Mode of transmission of hepatitis A is-------- ?

  1. Serum
  2. Faeco-oral
  3. Sexual contact
  4. All of these

B

Question 34: All of the insectivorous plants are true--------- ?

  1. Heterotrophs
  2. Carnivores
  3. Saprotrophs
  4. Autotrophes

D

Question 35: Midgut in cockroach is a short narrow tube called--------- ?

  1. Hepatic caeca
  2. Gizzard
  3. Stomach
  4. Rectum

C

Question 36: How many species of ascomycota occur in lichen symbiotic association ?

  1. 30%
  2. 40%
  3. 50%
  4. 60%

C

Question 37: Of the following which one is not the characteristic of green algae ?

  1. Some green algae possess cell wall with cellulose
  2. They are generally accepted as the ancestors of green plants
  3. Chlorella is unicellular non-motile green algae
  4. None of these

A

Question 38: The drfinite shape to ciliates is given by---------- ?

  1. Pellicle
  2. Penicle
  3. Calcium
  4. Cell wall

A

Question 39: A group of 8 cocci is called------------ ?

  1. Diplococci
  2. Octococci
  3. Tetrad
  4. Sarcina

D

Question 40: Which of the following structure provides greater pathogenicity to the bacteria------- ?

  1. Capsule
  2. Slime
  3. Cell Wall
  4. Cell membrane

B

Question 41: Aquatic arthropods respire through-------- ?

  1. Spiracles
  2. Gills
  3. Book lungs
  4. Both b and c

D

Question 42: Of the following which one is not found in series proterostomia ?

  1. Annelida
  2. Echinodermata
  3. Arthropoda
  4. Mollusea

B

Question 43: Second largest phylum of invertebrates is--------- ?

  1. Porifera
  2. Arthropoda
  3. Mollusca
  4. Chordata

C

Question 44: Free living example of Platyhelminthes is---------- ?

  1. Dugesia
  2. Fasciola
  3. Taenia
  4. None of these

A

Question 45: Hornwarts are included in sub-class of --------- ?

  1. Anthoceropsida
  2. Bryopsida
  3. Hepaticopsida
  4. Psilopsida

A

Question 46: Protonema is---------- ?

  1. Thallus like
  2. Algae like
  3. Fungus like
  4. Plant like

B

Question 47: Stem of Psilophyton an example of psilogsida is differentiated into an underground rhizome and an aerial part both of which are--------- branched ?

  1. Isotomous
  2. Trichotomously
  3. Dichotomously
  4. Multichotomously

C

Question 48: Maximum speed of nerve impulse transmission is--------- ?

  1. 100 m/sec
  2. 110 m/sec
  3. 120m/sec
  4. 130 m/sec.

C

Question 49: Intelligence is under the control of--------- ?

  1. Cerebrum
  2. Cerebellum
  3. Thalamus
  4. Hypothalamus

A

Question 50: The percentage of light absorbed by the leaf is --------- ?

  1. 20%
  2. 15%
  3. 10%
  4. 1%

D