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BIOLOGY MDCAT

UHS TOPIC WISE TEST (UNIT–5)




TOPICS: -

P  Introduction to Biology

P  Cell Biology

Q.1    whai is the structural and functional unit of LIFE

                A) ORGANELLE                B) CELL

                C)organism                        d) community

Q.2              Life cycle of tapeworm and liver fluke can be studied under:

A) Microbiology                                          C) Ecology

                B) Parasitology                                           D) Morphology

Q.3              The branch which deals with study of viruses is known as:

A) Toxicology                                                                    C) Microbiology

                B) Virology                                                                       D) Oncology

Q.4              Which of the following cell structures contains highest concentration of RNA?

A) Centriole                                                                          C) Lysosome

B) Chromosome                                                                  D) Nucleolus

Q.5              It is an artificial method by which identical copies of organisms are obtained:

A) Parthenocarpy                                                                C) Parthenogenesis

B) Cloning                                                                             D) PCR

Q.6              Which of the following correctly shows structures that are found in a eukaryotic cell?

(P = Present; O = Absent)

 

Nuclear

 

 

 

Membranes

Mesosomes

Ribosomes

A)

O

P

O

B)

P

O

O

C)

P

O

P

D)

P

P

P

Q.7              The absence of centrioles from higher plant cells means that during karyokinesis of somatic cells there is:

A) No spindle formed                                                        

B) No equatorial arrangement of chromosomes at metaphase

C) No apparent organizer of mitotic spindles

D) No true mitosis but an amitotic division

Q.8              Which one of the following possesses the most prominent Golgi apparatus?

A) An islet of Langerhans cell                                           C) A spermatogonium

B) A retinal rod cell                                                             D) A striated muscle

Q.9              Study of structure of organism, cell and its organelles at molecular level is called:

A) Microbiology                                                                   C) Biochemistry

B) Molecular biology                                                                          D) Biotechnology

Q.10           Microbiology is study of living organisms which includes all except:

A) Viruses                                                                              C) Protozoans

B) Bacteria                                                                           D) Plants 

Q.11           It is an effective method to control viral hepatitis:

A) Gene therapy                                                                  C) Antiseptics

B) Antibiotics                                                                                       D) Vaccination

Q.12           The major cause of hepatitis B is:

A) Blood transfusion                                                                           C) Absence of fibrinogen

B) Blood clotting                                                                                 D) Contaminated soil

Q.13           Vaccination is an example of:

A) Preventive measure                                                                       C) Drug treatment

B) Gene therapy                                                                                  D) Biological control

Q.14           Antibiotics are effective against:

A) Poliomyelitis                                                                    C) Histoplasmosis

                B) Typhoid                                                                           D) Genital herpes

Q.15           Administration of certain anticancer drugs to the patient to cure cancer is:

A) IDM                                                                                  C) Radiotherapy

B) Immunization                                                                 D) Chemotherapy

Q.16           Lichens are used for all of the following except:

A) Bioremediation                                                               C) Biological control

               B) Bioindication                                                                    D) Bioabsorption

Q.17           Echinoderms can be studied under:

                                A) Parasitology                                                                    C) Marine water biology 

B) Microbiology                                                                                   D) Fresh water biology

Q.18           Which of the following is an exception to cell theory?

                A) E. coli                                                                               C) Retroviruses

                B) Taxus baccata                                                                D) Homo sapiens

Q.19           It is true about Golgi apparatus:

                A) Its convex face is present far from cell membrane                                                                                  

                B) Its forming face is located towards cell membrane

            C) Its maturing face is present close to nucleus

            D) Its concave face is present far from cell membrane

Q.20           Pick a correct statement about composition of eukaryotic cell membrane:

                A) Lipids are present in least amount than protein and carbohydrates   

                B) Lipids, proteins and carbohydrates are present in equal amounts      

                C) Carbohydrates are present in least amount than proteins and lipids

                D) Proteins are more than lipids but lesser than carbohydrates

Q.21           Lysosomes are single membranous organelles that mainly contain:

A) Oxidative enzymes                                                        C) Hydrolytic enzymes

B) Photosynthetic enzymes                                               D) Respiratory enzymes

Q.22           Surplus food of plant is stored in:

                A) Sclerenchyma cells                                                        C) Chlorenchyma cells      

B) Parenchyma cells                                                                           D) Phloem cells

Q.23                         In prokaryotic cells, polysaccharide chains bound covalently to peptide fragments to form:

A) Chitin                                                                                C) Peptidoglycan

                B) Cellulose                                                                          D) Cell membrane

Q.24           The most distinctive feature of a prokaryotic cell is its:

A) Cell membrane                                                               C) Ribosome

                B) Cell wall                                                                           D) Mitochondria

Q.25           Cholesterol is absent in the cell membrane of:

A) Paramecium                                                                    C) Sycon

                B) E. coli                                                                               D) Rhizopus

Q.26           Organelles found only in animal cells as compared to plant cells are:

A) Vacuole & Golgi apparatus                                          C) Centriole & Lysosome

                B) Mitochondria & Chloroplast                                        D) Ribosome & Peroxisome

Q.27           Process that is absent in plant cell:

A) Cytokinesis                                                                      C) Karyokinesis

B) Osmosis                                                                                          D) Phagocytosis

Q.28           Respiration in prokaryotic cells is associated with:

A) Mitochondria                                                                C) Cell membrane

                B) Cristae                                                                          D) Cell wall

Q.29           According to fluid mosaic model, proteins in cell membrane:

A) Are fibrous                                                                                       C) Form bilayer

B) Are embedded in lipid bilayer                                                         D) Are absent

Q.30           All of the following functions are related with cell membrane except:

A) Regulation of materials                                                C) Protection from osmotic lysis

B) Conduction of nerve impulse                                      D) Transport of substances

Q.31           The process by which simple substances enter the cell without the use of cell energy along the concentration gradient is:

A) Active transport                                                              C) Exocytosis

               B) Passive transport                                                            D) Endocytosis

Q.32           Which of the followings is not cytoplasmic organelle?
A) Centriole                                                                          C) SER
B) Nucleolus                                                                         D) Ribosome

Q.33           Which one of the following is an example of sub cellular structures?

A) Xylem                                                                               C) Nucleus

                B) Epithelium                                                                       D) Cuticle

Q.34           Endoplasmic reticulum contains a system of flattened membrane-bounded sacs which are named as: 

A) Cristae                                                                              C) Cisternae

B) Marks                                                                               D) Tubules

Q.35           Lipids synthesis/metabolism takes place in which of the following organelle?

A) Mitochondria                                                                  C) Rough endoplasmic reticulum

B) Vacuoles                                                                          D) Smooth endoplasmic reticulum

Q.36           Golgi apparatus consist of:

A) Golgi Body + SER                                                          C) Golgi bodies + Golgi vesicles       

                B) SER + RER                                                                      D) Golgi bodies + SER vesicles

Q.37           All are self-replicating organelles except:

A) Nucleus                                                                            C) Golgi bodies

                B) Chloroplast                                                                      D) Mitochondria

Q.38           Circular DNA is found in:

A) Bacteria                                                                           C) Bacteria & chloroplast

                B) All viruses                                                                        D) Chloroplast, bacteria & mitochondria

Q.39           Which one of the following is the site of oxidative phosphorylation in mitochondria?

A) Cristae                                                                              C) Outer membrane

B) Matrix                                                                                              D) Ribosomes

Q.40           The size and number of mitochondria depends on cell’s:

A) Physical activity                                                             C) Structural activity

B) Physiological activity                                                                    D) Photosynthetic activity

Q.41           All of the following occur in mitochondria except:

A) Aerobic respiration                                                                         C) Fatty acid metabolism

B) Glycolysis                                                                                        D) Kreb’s cycle

Q.42           Formation of cilia is the function of:

A) Vacuole                                                                            C) Centriole

B) Lysosome                                                                                        D) Peroxisome

Q.43           Total number of microtubule triplets in two centrioles are:

                A) 3                                                                                        C) 9

B) 27      D) 18

Q.44           During translation, ribosomes are attached to mRNA through:

A) tRNA                                                                                C) Smaller subunit

B) Mg++                                                                                 D) Larger subunit

Q.45           A group of ribosomes attached to mRNA is known as:

A) Lysosome                                                                        C) Peroxisome

B) Initiation complex                                                                         D) Polysome

Q.46           Non-disjunction in first meiotic division produces abnormal gametes:

A) 50 %                                                                                 C) 100%

                B) 25%                                                                                  D) 10%

Q.47           In Jacob’s syndrome the sex chromosomes are:

A) XXX                                                                                  C) XXY                 

                B) XYY                                                                                  D) XO

Q.48           An individual with Down’s syndrome has chromosomes:

                A) n +1                                                                              B) 2n + 1               

                 C) n – 1                                                                             D) 2n - 1

Q.49           Non disjunction in most of autosomes results in:
A) Syndromes                                                                      C) Abortion
B) Mongolism                                                                      D) Infertility 
 

Q.50           Non disjunction may occur in_______ autosome(s):
A) 13th                                                                                    C) 21st
B) 6th                                                                                      D) Any 

Q.51           This is not a similarity between Turner’s and Jacob’s syndrome:
A) Both have only one X chromosome                          C) Aneuploidy of sex chromosomes
B) Both result in male phenotypes                   D) Result of non disjunction in 23rd pair   

Q.52           Defective CNS can be observed in:
A) Jacob’s syndrome                                                          C) Down’s syndrome
B) Metafemale                                                                    D) Klinefelter’s syndrome  
 

Q.53           Disjunction of chromosomes can occur during:
A) Anaphase I                                                                      C) Telophase II
B) Telophase I                                                                     D) All A, B, C

Q.54           The concentration of potassium ions in a red blood cell is much higher than it is in the surrounding blood plasma, yet potassium ions continue to move into the cell. The process by which potassium ions move into the cell is called:

A) Osmosis                                                                            C) Facilitated diffusion

                B) Simple diffusion                                                             D) Active transport

Q.55           The only way in which a very large molecule such as a protein could cross a cell membrane is:

                A) Active transport                                                              C) Simple diffusion

                B) Endocytosis                                                                     D) Facilitated diffusion

Q.56           Which of the following would be least likely to diffuse through a lipid bilayer?

A) Water                                                                                C) Carbon dioxide

B) Oxygen                                                                             D) Sodium ions

Q.57           Which one of the following is not a constituent of cell membrane?

                A) Glycolipids                                                                       C) Phospholipids

B) Nucleic acid                                                                     D) Cholesterol

Q.58           Which of the following is a logical hierarchy of organization?

                A) Tissue, organ, organism, population, individual

                B) Atom, molecule, organelle, cell, organ

C) Species, phylum, order, family, kingdom

D) Cell, molecule, tissue, organ, organism

Q.59           Where are you least likely to find ribosomes in a cell?

                A) Inside the vacuole                                                          C) Inside a mitochondrion

                B) In the cytoplasm                                                            D) Inside a chloroplast

Q.60           A mature human red blood cell has no nucleus and a lifespan of 120 days. Based on this information alone, it can be inferred that mature human red blood cells must:

                A) Be metabolically inactive                                             C) Not be able to replicate

                B) Have ribosomes to compensate                                  D) Contain haemoglobin

 

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