Solved Past Papers MCQs of MDCAT for the preparation of Medical and Dental College Admission Test and other medical tests.
Q.126 In antibody molecule, two heavy and two light chains are bonded by:
A) Disulphide Bond C) Hydrogen Bond
B) Monosulphide Bond D) Ionic Bond
Q.127 Variable amino acid sequences in antibody molecule are found in ________.
A) Both light chains only C) One heavy and one light chain
B) Both heavy chains only D) Both heavy and light chains
Q.128 Each ________ consists of a light gathering antenna complex and reaction center.
A) Chlorophyll C) Photon
B) Photosystem D) Electron
Q.129 Photosystem I has chlorophyll a molecules which absorb maximum light of:
A) 680 nm C) 700 nm
B) 780 nm D) 580 nm
Q.130 Cyclic flow or C4 photosynthesis produces:
A) ATP and CO2 C) Only CO2
B) ATP D) Only Oxygen
Q.131 Immediate product formed after CO2 fixation in Calvin Cycle is:
A) Unstable 6-carbon compound C) Unstable 4-carbon compound
B) Unstable 5-carbon compound D) Unstable 3-carbon compound m
Q.132 Functional group of chlorophyll a is:
A) —CH3 C) —COOH
B) —CHO D) —OH
Q.133 The modified plasmid or phage DNA is called:
A) Clone DNA C) cDNA
B) Recombinant DNA D) rDNA
Q.134 The rapid exchange of materials through carrier proteins across the plasma membrane is called:
A) Passive Diffusion C) Endocytosis
B) Active Transport D) Facilitated Diffusion
Q.135 The inner membrane of mitochondria form extensive infoldings called:
A) Cristae C) Lamella
B) Cisternae D) Bifidae
Q.136 Which one of the following organelle is found in both prokaryotic and eukaryotic cells?
A) Centriole C) Nucleus
B) Endoplasmic Reticulum D) Ribosome
Q.137 The compounds which on hydrolysis yield polyhydroxy aldehyde or ketone subunits are:
A) Lipids C) Polynucleotides
B) Proteins D) Carbohydrates
Q.138 Secondary structure of protein is found in:
A) Trypsin C) Insulin
B) Keratin D) Glucagon
Q.139 Waxes are formed by combination of fatty acids with:
A) Alcohol C) Serine
B) Glycerol D) Cysteine
Q.140 Phosphodiester bond is:
A) P—O—C—P—O—C C) C—O—P—O—C
B) C—O—P D) C—C—O—P
Q.141 An enzyme required Mg++ to catalyze the substrate. The Mg++ is best identified as:
A) Prosthetic group C) Co-enzyme
B) Activator D) Inhibitor
Q.142 According to _________ model the active site of enzyme is modified as the substrate interacts with enzyme.
A) Induced fit C) Emil Fischer
B) Lock and Key D) Fluid Mosaic
Q.143 All viruses can reproduce within living organisms only, so they are known as:
A) Ectoparasites C) Obligative Intracellular Parasites
B) Endoparasites D) Facultative Intracellular Parasites
Q.144 Many bacteria are motile due to presence of:
A) Flagella C) Cilia
B) Pilli D) Microtubules
Q.145 _________ is an invagination of cell membrane which helps in cell division.
A) Fimbriae C) Mesosome
B) Nucleoid D) Endospore
Q.146 _________ is the yeast that grows in the mucous membrane of mouth or vagina.
A) Candida albicans C) Aspergillus fumigatus
B) Saccharomyces cerevisiae D) Aspergillus flavus
Q.147 Taenia is an endoparasite of human, pig and cattle which belongs to phylum.
A) Cnidaria C) Annelida
B) Aschelminthes D) Platyhelminthes
Q.148 Body of _________ consists of segments called proglottis which contains mainly sex organs.
A) Planaria C) Fasciola
B) Ascaris D) Tapeworm
Q.149 __________ is a common parasite of the intestine of human and pig which belongs to phylum nematode.
A) Taenia solanum C) Ascaris lumbriocoides
B) Schistosoma D) Fasciola hepatica
Q.150 In radial symmetry all body parts are arranged around the central axis. Radial symmetry represents __________ mode of life.
A) Sessile C) Active
B) Streamlined D) Parasitic
READ MORE:
- Solved Past Papers MCQs of MDCAT 1
- Solved Past Papers MCQs of MDCAT 3
- Solved Past Papers MCQs of MDCAT 4
