MDCAT Biology Online Test With Answers

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MDCAT Biology Online Test

Sr. # Questions Answers Choice
1 Lumen of the cristae is the part of Inner membrane Outer membrane Inner compartment Outer compartment
2 In mitochondria, small knob like structure called FI particles are found in Outer membrane Inner membrane Outer compartment Inner compartment
3 Which component of the cell is mainly concerned with production of cell secretions? Ribosome Cytoskeleton Mitochondria Golgi
4 Chlorophyll molecules resemble with which part of hemoglobin? Polypeptide chains Globin part Non-Protein All
5 Cells recycle their dead parts with the help of Centrioles Vacuoles Lysosomes Golgi apparatus
6 On an average, there are 50 or more thylakoids piled to form one Intergranum Crista Granum F<sub>_1 </sub>particle
7 Which one of the following acts as a site for storage of water and cells products or metabolic Intermediates? Chloroplast Mitochondrion Vacuole Endoplasmic reticulum
8 All of the following are present in mitochondria, EXCEPT Cristae Ribosomes DNA Thylakoids
9 Which one of the following always contains DNA? Centriole Lysosome Golgi apparatus Mitochondrion
10 The rough endoplasmic reticulum is involved in Synthesis of proteins Storage Of Ca+<sub>2</sub> ions Synthesis of lipids Detoxification of drugs
11 Which region of the nucleolus has DNA? Central fibrillar region Central granular region Peripheral granular region Peripheral fibrillar region
12 A Crista is made of -------- membrane Lipoprotein Glycoprotein Nucleoprotein Phospholipids
13 Methylation of proteins occur in Transport vesicles of endoplasmic reticulum Lysosomes Golgi apparatus Transport vesicles of Golgi bodies
14 --------------- and --------------- have same number of chromosome Man, Chimpanzee Chimpanzee, Potato Man, Potato Potato, Tomato
15 A group of ribosomes attached with same mRNA form polysome for Better expression of Gene Rapid production of protein Increased production of protein Protein export
16 The organelle that protect the cell from invading organisms is Centriole Lysosome Mitochondrion Vacuole
17 Digestive vacuoles are also called as Primary Lysosomes Secondary Lysosomes Phagocytic Vacuoles Pinocytic Vacuoles
18 Capability of extra nuclear inheritance is found in Ribosomes Lysosomes Mitochondria Chromosomes
19 Traffic of substance between nucleoplasm and cytoplasm is controlled by Nuclear Envelope Nuclear membrane Nuclear pores Endoplasmic reticulum
20 Which one of the following is associated with intracellular transport of material? Golgi apparatus Centriole Endoplasmic reticulum Lysosome
21 --------- Develop the basic formwork of plasma membrane: Phospholipids Glycoproteins Glycolipids
22 Pick up the correct statement about the following figure: 2.Nucleolus, 4.Golgi apparatus, 10.cytoplasm, 7.Mitochondria 2.Nucleolus, 7.cell membrane, 9.cytoplasm, 7.Mitochondria 2.Nucleolus, 4.Golgi apparatus, 5.cytoplasm, 7.Mitochondria 2.Nucleolus, 4.Golgi apparatus, 10.cytoplasm, 7.Centriole
23 Endocytosis of an apoptotic body is termed as Pinocytosis Exocytosis Phagocytosis Apoptosis
24 A Cell interacts with its external environment through Cell Wall Nuclear membrane Plasma membrane Cytoplasm
25 Most of the plant cells lack following organelles EXCEPT Flagellum Lysosome Centriole Mitochondria
26 Pick up the correct sequence of path followed by a testosterone molecule till its export SER&gt;RER&gt;Transport vesicle&gt;Golgi apparatus&gt;secretory vesicle&gt;cell membrane SER&gt;Golgi apparatus&gt;Transport vesicle&gt; secretory vesicle&gt;cell membrane SER&gt;RER&gt;Golgi apparatus&gt; Transport vesicle&gt;secretory vesicle&gt;cell membrane SER&gt;Transport vesicle&gt;Golgi apparatus&gt;secretory vesicle&gt;cell membrane
27 According to fluid mosaic model of cell membrane The most common type of molecules in the membrane are proteins Basic membrane structure results from how proteins interact with water The membrane is highly mobile mixture of phospholipids and proteins The unique properties of cell types are determined by their phospholipids
28 Eukaryotic ribosomes are composed of an almost equal amount of _____ and proteins DNA RNA Carbohydrates Lipids
29 Substances cross the cell membrane more easily when they are water soluble protein soluble alcohol soluble lipid soluble
30 Most unifying characteristics of all types of cells is Cell membrane Nucleus Ribosomes S.E.R
31 Animal cells differ from plant cells in having 80 S ribosome Chloroplasts Mitochondria Centrioles
32 Which of the following features is not shared by prokaryotic and eukaryotic cells Ribosome Cytoplasm Cell membrane Nuclear membrane
33 The intake of liquid material across the cell membrane is called as Phagocytosis Pinocytosis Endocytosis Exocytosis
34 Peptidoglycan or murine is a special or distinctive feature of cell wall in Algae Bacteria Fungi Plants
35 In deoxyribose, oxygen is removed from carbon number 1 2 3 4
36 Which of the following bond is not present in tertiary structure of proteins Peptide Hydrogen Ionic Ester
37 Glycine can be converted to alanine by Addition of carbon and 2 hydrogens Removal of carbon and 2 hydrogens Addition of Methyl group Removal of hydrogen and 2 carbons
38 Which of the following nitrogenous base have methyl group Adenine Guanine Uracil Thymine
39 What is the theoretical number of chemically different dipeptide that can be made from 2 different amino acids 1 2 4 8
40 Monosaccharides are major component of DNA, ATP, RuBP, Lecithin DNA, NAD, Insulin DNA, NAD, ATP, RuBP DNA, RNA, Myosin
41 Which of the following is dimer of glucose Sucrose Fructose Maltose Cellulose
42 Most of the proteins are composed of _____ types of amino acids 170 150 25 20
43 When Fructose form ring structure, It is 6 Cornered 5 cornered 4 cornered 3 cornered
44 Nucleotide is to ___ as amino acid is to ___ Nucleic acids, Lipids Nucleic acids, Proteins Proteins, Lipids Lipids, proteins
45 Chemical formula of pentose sugar present in DNA C<sub>5</sub>H<sub>9</sub>O<sub>5</sub> C<sub>5</sub>H<sub>10</sub>O<sub>5</sub> C<sub>5</sub>H<sub>10</sub>O<sub>4</sub> None
46 In tertiary structure, presence of hydrophilic amino acids at the surface of proteins and hydrophobic amino acids buried inside, indicate Nature of bonding Function of protein Nature of medium Shape of protein
47 Which of the following does not contain peptide bond Hemoglobin Myoglobin Insulin Cutin
48 How many nitrogen atoms are found in lecithin 1 2 3 4
49 The bond formed between glucose and fructose to form sucrose α 1 , 4 Glycosidic bond β 1 , 4 Glycosidic bond α 1 , 2 Glycosidic bond β 1 , 2 Glycosidic bond
50 Pick up the wrong statement from the following Oils are lighter than water Animal fats are solid at room temperature Specific gravity of fats is higher than water Fats containing saturated fatty acids are solid
51 Pick up the example of a dinucleotide: ATP GTP ADP NAD
52 All carbon atoms in a monosaccharide ____ have hydroxyl group Except one Except Two <span style="white-space: normal;">Without Exception</span> Except last
53 In free state Glucose is present in: Grapes Dates Figs All Fruits
54 The compound formed by the combination of a base and a pentose sugar is called: Nucleoside Nucleic acid Nucleotide Nuclein
55 The amount of DNA in _____ is one half to that of_____: Somatic cells, Germ cells Osteocytes, Somatic cells Germ cells, Somatic cells Somatic cells, Gametocytes
56 Which of the following sugar is abundant in muscle fibres Myoglobin Starch Glycogen Oxygen
57 In a DNA duplex , what will be distance in between two consecutive base pairs: 3.4 Angstrom 34 Angstrom 0.34 Angstrom 340 Angstrom
58 Lipids store double amount of energy as compared to same amount of carbohydrates, because of Higher proportion of C-H bonds Higher proportion of C-N bonds Higher proportion of C-O bonds Lower proportion of C-O-P bonds
59 Which level of protein structure is responsible for maintenance of helix shape of an enzyme Primary Secondary Tertiary Quaternary
60 Pick out the phospholipid from the following Phosphatidylserine Lecithin Phosphatidylcholine All
61 F. Sanger was the first scientist who determined the ___ structure of a protein molecule Primary Secondary Tertiary Quaternary
62 Both Glycoprotein and glycolipids are components of Plant Cell walls Algal Cell Walls Fungal Cell Wall Biological Membranes
63 Highest number of carbons are present in Butyric acid Acetic acid Palmitic acid Oleic acid
64 Which part of amino acid give its physical and chemical properties Amino group Carboxylic group Alpha carbon Alkyl group
65 Insulin is a/an: Osmotic Protein Transport Protein Regulatory Protein Catalytic Protein
66 The next to simplest amino acid is Alanine Glycine Serine Glutamine
67 Secondary structure is the ultimate structural level of which of the following proteins? Trypsin Insulin Keratin Glucose
68 In a phospholipid molecule, fatty acid is attached to the carbon number_____ of glycerol. 1 2 Both 3
69 ______ are important components of brain and plasma membrane: Nucleoproteins Glycolipids Lipoproteins Phospholipids
70 Glycerol, fatty acids and phosphoric acid give rise to: Phospholipid Phosphatidic acid Phosphatidyl choline Phosphatidylethnoline
71 Which of the following is correct option Nucleoside does not contain phosphate Nucleotide has three sub-units Ester bond is present in acylglycerols All
72 Pick up ester bond present in nucleotide P-O-C C-O-C N-O-C S-O-C
73 Pick the odd one Cellulose Galactose Agar<span style="white-space:pre"> </span> Pectin
74 RNA and Proteins are components of Chromosomes<span style="white-space:pre"> </span> Receptors Secretions Ribosome
75 Which of the following is not a homopolysccharide? Starch Chitin Pectin Glycogen
76 Which of the following sugar does not form a ring structure in a solution Glyceraldehyde Ribose Glucose Fructose
77 ___ gives blue color with iodine Glycogen Dextrin Cellulose Starches
78 Which of the following reaction is reverse of others Hydrolysis Decondensation Decomposition Condensation
79 Pick a non-reducing sugar Lactose Sucrose Glucose Fructose
80 The simplest mono saccharide containing keto group is: Glyceraldehyde<span style="white-space:pre"> </span> Glucose Dihydroxyacetone Ribose
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