Free dowload biology Solved mcqs on Coordination

Schedule test                     FSc. 1st Year                     Time Allowed: 20 min

BIOLOGY (objective)        Chapter 17                   Total Marks: 17 

                                                     ANSWER KEY                          

Note: Attempt all questions.

Q .No.1: Four possible answers are given. Encircle the best option. (17)

1. Behaviour of plants depend on variation in:
   a) Growth rates        b) Turgidity of cells       c) Both a & b           d) None of these
2. Chlorosis is due to:

a)      Accumulation of waste products           b) Deficiency of chlorophyll

b)      Short supply of mineral nutrients          d) All of these

3. Detection of vibration in vertebrates is achieved by receptors in:

a)      Brain                           b)Skin                      c)Joints                d)None of these

4. Neuroglia cells are present in:

a)      Lower animals             b) Higher animals

b)      Both a and b               d) None of these

5. Nissl’s granules are group of:

a)      Microtubules               b) Neurofilaments       c) Ribosomes      d)Neurotransmitters

6. In motor neurons many granules are present in:

a)      Cell body                    b) Axon                       c) Dendrites         d) Both a & b

7. Hypophysis cerebri is an ovoid structure of about:

a)      0.3cm                          b) 0.4cm                      c) 0.5cm                d) 0.6cm

8. Hormone that affects the process of metamorphosis in amphibians:

a)      Thyroxin                      b) Tri-idothyronine      c) Both a and b       d) None of these

9. The promoter of leaf senescence is:

a)      Auxins                         b) Gibberellins             c) Cytokinins           d) Abscisic acid

10. Which of the following neuron has single dendron?

a)      Sensory dendron         b) Motory dendron     c) Both a and b        d) None of these

11. Myelin Sheath surrounding neuron fibers is made of:

a)      Carbohydrates             b) Protiens                   c) Lipids                      d) Fats

12. Hydra has no

a)      Glandular cells            b) True muscles           c) Nerve cells              d) All of these

13. Which of the following is not related to neurons?

a)      Conduction                 b) Regeneration            c) Reflex                    d) Movement

14. Intelligence is under control of:

a)      Cerebrum                    b) Cerebellum              c) Thalamus            d) Hypothalamus

15. Epinephrine and Thyronine are:

a)      proteins                       b) Steroids                   c) Amino acid        d) Polypeptides

xvi.            Acetylcholine is neurotransmitter that lies in:

a) Outside the nervous system     b) Inside the nervous system  

c) inside brain                               d)  None of these

xvii.          Nissl’s granules are present in:

a)      Axoplasm                     b) Mylien sheath                     c) Dendrite        d) Soma
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Free download Biology mcqs on cell

Schedule test                     FSc. 1st Year                             Time Allowed: 20 min

BIOLOGY (objective)        Chapter (The Cell)         Total Marks: 17 

                                                                               

Note: Attempt all questions.

Q .No.1: Four possible answers are given. Encircle the best option. (17)

i.            The structural and functional unit of the life is:

           a) Amino acid       b) mRNA      c) DNA     d) Cell

ii.            Study of cell biology began with:

     a) Discovery of cell                  b) Discovery of Nucleus  

c) Establishment of cell theory       d) “a” & “b”

iii.   Lorenz Oken believed that:

    a) All living beings originate from or consist of vesicles or cells.

    b) No body can have life if its constituent parts are not cellular tissue or are not formed by cellular tissue.

     c) All of these       d) None of these

iv.      Lorenz Oken was:

           a)German biologist/Scientist.    b) French biologist/Scientist.

           c) American biologist/Scientist.        d) None of these

v.      “All presently living cells have a common origin” was said by:

            a) Lamarck 1809      b) Lorenz Oken 1805       c) Louis Pasteur 1862

            d) August Weismann 1880

vi.                                                                              Working definition of living things that living things are chemical

           organization composed of cells and capable of reproducing  

           themselves” was given by:

            a) August Weismann      b) Louis Pasteur     c) Robert Brown

            d) Original cell theory and Virchow’s hypothesis

vii.      --------------- is an important unifing concept:

           a) Cell theory     b) Cell         c) mRNA        d) DNA

viii.      Cells of plants & animals are distinguished by presence or absence of:

          a) Cell Wall        b) Embryo        c) Nucleus         d) Cytoplasm

ix.      Cells of plants and algae are distinguished on the basis of:

           a) Cell wall       b) Chloroplast       c) Embryo         d) Habitat  

x.      Cells of plants and algae are similar on the basis of:

           a) Chloroplast & Photosynthesis         b) Cell wall          c)  both“a” & “b”

           d) Not similar at all

xi.   Cells of plants and Fungus like protists are similar on the basis of:

           a) Photosynthesis        b) Cell wall      c) Reproduction      d) Centriole

xii.   Cells of animals and Myxomycets, Oomycets are similar on the basis of:

           a) Centriole     b) Being heterotrophs    c) embryo       d) “a” & “b”

xiii.   Cells of plants and Myxomycota are different on the basis of:  

           a) Cell wall       b) Centriol        c) Embryo       d) “b” & “c”

xiv.   Cells of Eukaryotes and Prokaryotes are different on the basis of:

           a) Ribosomes       b) Cell wall       c) Nucleus        d) All of these

xv.   In electron microscope, the source of illumination is:

           a) Solar energy       b) Beam of light        c) Beam of electron    

            d) None of these

xvi.   A typical compound microscope has the resolution:

           a) 2.0mm      b) 0.2μm      c) 2.0μm        d) 0.02μm

xvii.The resolution of electron microscope ranges between:

           a) 1—2 Angstrom      b) 2—3 Angstrom

           c) 2—4 Angstrom       d) 1—4 Angstrom

xviii.                                                                        Ground substance of cytoplasm:

          a) Organelles      b) Cytosol       c) All of these     d) None of these

xix.      In cytosol small molecules form:

           a) Colliodal solution     b) Sol       c) Gel       d) None of these

xx.   In cytosol large molecules form:

           a) True solution    b) Colliodal solution     c) Sol       d) Gel      

xxi.  No. of chromosomes in frog cell is:

             a) 23 pair       b) 23       c) 26        d) 46

xxii.  The colloidal solution of cytosol may be sol or gel; peripheral parts of cell

 are often like:

   a) Sol        b) Gel      c) All of these        d) None of these

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Free download Biology Paper Chapter 3

Schedule test                     FSc. 1st Year                     Time Allowed: 20 min

BIOLOGY (objective)        Chapter (3)                    Total Marks: 17 

                                                                               

Note: Attempt all questions.

Q .No.1: Four possible answers are given. Encircle the best option. (17)

1.            An activated enzyme consisting of polypeptide chain and a cofactor is called:

              a) Apoenzyme   b) Holoenzyme    c) Alloenzyme   d) None of these

    2.     The reactant called---------is attached to the active site of enzyme:

            a) Co-enzyme   b) Cofactor   c) Substrate    d) Prosthetic group

    3.     For enzymes of human body, the optimum temperature is:

            a) 37˚C    b) 98.6˚C    c) a & b    d) None of these

   4.      Lock and key model of enzymes was proposed by:

            a) Koshland    b) Emil Fisher    c) L. Pauling   d) Altman

   5.      ----------- acts as inhibitor of succinate dehydrogenase:

            a) Malonic acid    b) Fumeric acid     c) Succinic acid  d) Fumerate

   6.      An enzyme and its substrate react with each other through definite

             charge bearing site called ………. Site.

            a) Catalytic    b) Passive   c) Binding    d) Active

  7.       An enzyme is a three dimensional:

            a) Fibrous protein    b) Straight protein   c) Branched protein

            d) Globular protein

  8.       The optimum pH of Arginase is:

            a) 7.70     b) 9.70    c) 5.60      d) 4.25

  9.       The activation energy of reaction is lowered by:

            a) Coenzyme    b) Substrate     c) enzyme     d) Product

  10.     Some metal ions are used by enzymes as:

            a) Prosthetic group   b) Cofactor   c) a & b    d) None of these

  11.     Reversible inhibitors form weak linkage with the:

            a) Enzyme     b) Reactant    c) Product     d) Substrate

  12.     The detachable cofactor is known as an activator if it is:

             a) Organic ion       b) Non-ionic    c) Inorganic ion   d) None of these

  13.     Chemical reaction can be accelerated by an enzyme even in:

             a) Small amount   b) Moderate amount   c) Large amount  

            d) All of these

  14.     Enzyme without cofactor is called:

            a) Passive enzyme   b) Allosteric enzyme     c) Holoenzyme

             d) Apoenzyme

  15.      If non-protein portion is loosely attached to protein part it is called:

              a) Co-protein      b) Coenzyme    c) Co-molecule     d) None of these

  16.       Induce Fit Model was put forward by:

              a) Robert Koch     b) Louis Pasteur    c) Emil Fischer   d) Koshland

17.         Reversible inhibitor forms:

             a) Weak linkage with enzyme          b) Strong linkage with enzyme

             c) Either “a” or “b”              d) none of these