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MCQs on the Structure and Functions of a Cell

Updated on August 15, 2015

Cell

1. Each section of the chromosomal DNA that carries the information necessary for the synthesis of a single polypeptide is

Chromosome

DNA

Gene

Genome

2. The component of the cell composed of the cytosol and organelles

Cytoplasm

Nucleus

Nucleolus

Mitochondria

3. A highly coiled, condensed form of chromatin formed in the cell nucleus during meiosis and mitosis

Chromosome

DNA

Gene

Genome

4. The sum of all the chromosomal genes of a cell

Chromosome

DNA

Gene

Genome

5. A double helical molecule, consisting of two strands of four different nucleotides containing genetic information

Chromosome

DNA

Gene

Genome


6. A small accessory DNA molecule used for DNA cloning

Lysosome

Mitochondrion

Plasmid

Ribosomes

7. The site of ATP production through the process of aerobic respiration

Lysosome

Mitochondrion

Plasmid

Ribosomes

8. Proteins are synthesised in

Lysosome

Mitochondrion

Plasmid

Ribosomes

9. Digestion centre of the cell is

Lysosome

Mitochondrion

Plasmid

Ribosomes

10. The process by which cytoplasm divides, each half taking with it one of the two nuclei to form a new cell

Cytokinesis

Exocytosis

Mitosis

Phagocytosis

11. A special form of endocytosis involving internalisation of particulate matter

Cytokinesis

Exocytosis

Mitosis

Phagocytosis

12. A process of cell division where each of the two daughter cells receives a complete set of chromosomes

Cytokinesis

Exocytosis

Mitosis

Phagocytosis

13. A process in which a secretory vesicle fuses with the plasma membrane and materials are expelled into the extra cellular fluid

Cytokinesis

Exocytosis

Mitosis

Phagocytosis


14. A specialised protein that binds to DNA and organises its structure in the nucleus

Chromosome

Histone

Hormone

Peroxisome

15. A small membrane bound bag that is involved in digestion and food waste in a cell

Chromosome

Histone

Hormone

Peroxisome

16. A chemical messenger that helps regulate the activity of other tissues and organs

Chromosome

Histone

Hormone

Peroxisome

17. Three base sequence in a polynucleotide of DNA or mRNA that specifies the location of a single amino acid in a polypeptide chain:

Codon

Exon

Intron

Polysomes


18. A structure composed of ribosomes attached to a single strand of mRNA and helps in peptide synthesis

Codon

Exon

Intron

Polysomes

19. Segment of eukaryotic gene that consists of DNA coding for a sequence of nucleotides in a specific molecule of messenger RNA

Codon

Exon

Intron

Polysomes

20. Noncoding region of a eukaryotic gene that is transcribed into RNA but removed by splicing during production of messenger RNA

Codon

Exon

Intron

Polysomes

21. One of the most common types of fatty acids found in phospholipids

Palmitic acid

Cholesterol

Glycophorin

Spectrin

22. The most abundantly found steroid located in cell membranes

Palmitic acid

Cholesterol

Glycophorin

Spectrin

23. An intrinsic glycoprotein in the red blood cell membrane

Palmitic acid

Cholesterol

Glycophorin

Spectrin


24. An extrinsic protein found only on the cytoplasmic side of the red blood cell membrane

Palmitic acid

Cholesterol

Glycophorin

Spectrin

25. Any compound that binds with a high degree of specificity to a receptor

Agonist

Antagonist

Exon

Ligand

26. A ligand that binds with high affinity to a receptor but evokes no response

Agonist

Antagonist

Exon

Ligand

27. A ligand capable of binding to a plasma membrane receptor and evoking response

Agonist

Antagonist

Exon

Ligand

Another Hub on Cells and Cell Organelles

Answers

  1. Gene
  2. Cytoplasm
  3. Chromosome
  4. Genome
  5. DNA
  6. Plasmid
  7. Mitochondrion
  8. Ribosomes
  9. Lysosome
  10. Cytokinesis
  11. Phagocytosis
  12. Mitosis
  13. Exocytosis
  14. Histone
  15. Peroxisome
  16. Hormone
  17. Codon
  18. Polysomes
  19. Exon
  20. Intron
  21. Palmitic acid
  22. Cholesterol
  23. Glycophorin
  24. Spectrin
  25. Ligand
  26. Antagonist
  27. Agonist

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    • profile image

      DR OMARI MIKAYE SAM 

      5 years ago

      VERY VERY VERY NICE PRESENTATION MAY GOD BLESS THE AUTHOR

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