Thursday, 4 April 2019

Biology MCQs Solved Answers Online Quiz Exams Tests Dogar Book

Biology based mcq online test quiz for MBBS jobs through PPSC. Here solved MCQs of biology for bsc students also MCAT exams. All biology mcqs of biomolecules and biology mcqs for tests preparations. All biology mcq question bank online solved notes. Biology MCQs With Answers PDF Free Download In Quiz free. Dogar sons Books MCQs of Biology solved answers. Dogar Sons biology mcqs questions and answers for Exams and Medical Tests.

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Biology Solved MCQs Quiz

Q.1: The chlorophyll molecule is embedded in the core of thylakoid membrane which acts as------- ?

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

A

Q.2: Breaking of terminal phosphate of ATP releases about ----------- Kcal of energy ?

  1. 6.1
  2. 6.3
  3. 7.1
  4. 7.3

D

Q.3: The maximum amount of oxygen which normal human blood absorbs and carries at sea level is -------- per 100 ml of blood ?

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

D

Q.4: There are --------- stomata per square cm of leaf surface in Tobacco plants ?

  1. 1200
  2. 12000
  3. 100,000
  4. 1000

C

Q.5: Active site of Rubisco is evolved to bind ?

  1. CO2
  2. O2
  3. H2O
  4. All of these

D

Q.6: All of the following contain cartilage except:-------- ?

  1. Larynx
  2. Trachea
  3. Bronchi
  4. Bronchioles

D

Q.7: Vocal cords are stretched across------ ?

  1. Larynx
  2. Pharynx
  3. Golttis
  4. None of these

C

Q.8: Higher turgor pressure in a plant cell is maintained by-------- ?

  1. Large number of vacoules in a plant cell.
  2. Higher ionic concentration inside vacuoles resulting from active pumping of ions at their tonoplastic membrane
  3. Higher osmotic pressure of the cell vacuole
  4. both b and c

D

Q.9: Which of the following statement about osteoporosis is incorrect ?

  1. It results from estrogen deficiency.
  2. Bone eating process takes over bone formation process.
  3. There is reduction of bone mass and change in chemical composition of the matrix
  4. It is common in old age.

C

Q.10: Bony callus formation completes in--------- ?

  1. 2-3 weeks
  2. 3-4 weeks.
  3. 2-3 months.
  4. 3-4 months.

C

Q.11: The contraction of which of the following muscle fibers, is controlled by hormones ?

  1. A smooth muscle
  2. A cardiac muscle
  3. A skeletal muscle.
  4. All of these

A

Q.12: Gibberellins is an example of---------- ?

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

B

Q.13: 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.14: Which of the following step occurs immediately after binding of Ca2+ with troponin molecule during muscle contraction ?

  1. Binding sites of actin get attached to the myosin head.
  2. Troponin uncovers the actin binding sites.
  3. Tropomyosin gets removed from the binding sites of actin filaments.
  4. Ca2+ goes back inside sarcoplasmic reticulum.

C

Q.15: Which type of motions are present in solid ?

  1. translational
  2. rotational
  3. vibrational
  4. all of these

C

Q.16: branches of biology and medicine concerned with the structure and function of plant and animal cells is called------- ?

  1. Nephrology
  2. Semiology
  3. Orology
  4. Cytology

D

Q.17: Adult human brain is about---------% of the total body weight ?

  1. 2%
  2. 3%
  3. 7%
  4. 8%

A

Q.18: which of the following gas discovered by Scheele ?

  1. chlorine
  2. hydrogen
  3. oxygen
  4. carbon dioxide

A

Q.19: The light microscope can make the object---------times bigger ?

  1. 10 times
  2. 100 times
  3. 1000 times
  4. 10000 times

C

Q.20: Which of the following organ is responsible for blood filtration ?

  1. Liver
  2. Kidney
  3. Lungs
  4. Heart

B

Q.21: Locomotion in diatoms is carried out with the help of-------- ?

  1. Valve
  2. Raphe
  3. Pseudopodium
  4. Cilia or flagella

B

Q.22: Which of the following organ is responsible for body metabolism ?

  1. Liver
  2. Kidney
  3. Lungs
  4. Heart

A

Q.23: which of the following is called protein synthesizing machine ?

  1. mitochondria
  2. nucleus
  3. chromosomes
  4. ribosomes

D

Q.24: The chloroplasts of diatoms and chrysophycean algae do not possess------ ?

  1. Chloryphyllpigments
  2. Enzymes for photolysis
  3. Defined grana and stroma
  4. Carotenes with chlorophylls

C

Q.25: Diatomaceous earth is used for making -------- ?

  1. Fertilizers
  2. Weedicides
  3. Insecticides
  4. Fire proof bricks

D

Q.26: In condition of high temperature, following does not occur or occurs at low level------ ?

  1. Vasodilation
  2. Activation of sweat glands
  3. Thermogenesis
  4. Evaporative cooling

C

Q.27: Protein coat the capsid of adenovirus is-------- ?

  1. Surrounding genome
  2. Surrounded by genome
  3. Surrounding the envelope
  4. Both B and C

A

Q.28: Which of the following is an RNA virus ?

  1. Influenza virus
  2. Herpes virus
  3. HBV
  4. Pox virus

A

Q.29: The liquid that escapes during defrosting frozen meat contains ----- bacteria ?

  1. Campylobacter
  2. Nitrobacter
  3. Azobacter
  4. Salmonella

D

Q.30: Which one is not correct for a productive theory------ ?

  1. It is predictive
  2. It has explanatory power
  3. It discourages suggestion of different hypotheses
  4. None of these

C

Q.31: Parasites capable of living independently of its host at times is called as ----------- parasite ?

  1. Obligate
  2. Strict
  3. Facultative
  4. Endoparasite

C

Q.32: Which of the following statement is incorrect about antibiotics ?

  1. They are used against microorganisms
  2. They are always effective against bacteria
  3. They are used in diseases like tuberculosis and pneumonia
  4. They are derived from bacteria only

D

Q.33: Cell wall is extremely well preserved in fossil specimens in------- ?

  1. Diatoms
  2. Dinoflagellates
  3. Slime moulds
  4. None of these

A

Q.34: Constricting ring around nematode is formed by-------- ?

  1. Arthrobotrys
  2. Pleurotus ostreatus
  3. Mildews
  4. All of these

A

Q.35: In which of the following example of fungi dikaryotic hyphae exist for long period ?

  1. Deuteromycota
  2. Basidiomycota
  3. Zygomycota
  4. All of these

B

Q.36: In slime molds spores develop into------- ?

  1. Swarm cells
  2. Biflagellated cells
  3. Amoeboid reproductive cells
  4. All of these

D

Q.37: Kingdom protista includes-------------phyla ?

  1. 27
  2. 28
  3. 26
  4. 29

A

Q.38: The Kingdom of recyclers is known as kingdom---------- ?

  1. Algae
  2. Bacteria
  3. Fungi
  4. Embryophata

C

Q.39: An association in which fungal hyphae penetrate the outer cells of the plant root forming coils swellings and minute branches and also extend out into surrounding soil is called-------- ?

  1. Mycorrizael association
  2. Endomycorrhizae
  3. Ectomycorrhizae
  4. Lichen

B

Q.40: Lime stone deposits are formed from------- ?

  1. Zooflagellates
  2. Foraminferans
  3. Aetinopods
  4. Apicomplexans

B

Q.41: One of the commonest cause of food poisoning are the toxins produced by------ ?

  1. Azobacter
  2. Nitrosomonas
  3. Campylobacter
  4. Nitrobacter

C

Q.42: Which of the following group represent pathological fungi-------- ?

  1. Mushrooms morels and truffles
  2. Rusts smuts and molds
  3. Penicillium
  4. All of these

B

Q.43: Anus is surrounded by ----- types of muscles ?

  1. 2
  2. 3
  3. 1
  4. 4

A

Q.44: Radiolarians belong to which of the following protozoal group----------- ?

  1. Zooflagellates
  2. Foraminifera
  3. Actinopods
  4. Apicomplexans

B

Q.45: Complex specialized flagellates living symbiotically in the gut of termites are------- ?

  1. Trichonymphas
  2. Trypanosoma
  3. Euglena
  4. Radiolarians

A

Q.46: Brown algae are also known as---------- ?

  1. Phaeophyta
  2. Rhodophyta
  3. Pyrrophyta
  4. Chrysophyta

A

Q.47: Who discovered the bacteria causing tuberculosis and also developed various techniques of media preparation and maintenance of pure culture------- ?

  1. Robert Koch
  2. Louis Pasteur
  3. Alexander Fleming
  4. Leeuwenhoek

D

Q.48: The first bacterium isolated was---------- ?

  1. Coccus
  2. Bacillus
  3. Vibrio
  4. Spirochete

B

Q.49: Some bacteria ranging occasionally a size of 500 ?m in length are-------- ?

  1. Escherichia coli
  2. Spirochetes
  3. Mycoplasma
  4. Epulopiscuim

B

Q.50: Puccinia commonly destroys------------ ?

  1. Corn
  2. Tomato
  3. Dodder
  4. Wheat

D