Biological Science MCQ 2: Basic Examination Quiz for NET Aspirants

1. The heart is made up of

  • Nonstriated muscle
  • cardiac muscle
  • adipose tissue
  • striated muscle

2. Har Gobind Khorana’s work relates to

  •  Reduction of Mutation
  •  Synthesis of RNA from Bacterial cell
  •  Understanding the Genetic code
  •  Synthesis of simple DNA

3. The erythrocytes originate from

  •  Chondroblasts
  •  Neuroblasts
  •  Scleroblasts
  •  Hemocytoblasts

4. The thin layer that forms a common boundary for any two adjacent cells is

  •  none of the above
  •  secondary wall
  •  primary wall
  •  middle lamella

5. The cytoplasm of a cell refers to

  •  protoplasm outside the cell nucleus
  •  protoplasm within the cell nucleus
  •  protoplasm within and outside the nucleus
  •  peripheral protoplasm

6. The meristematic tissues are composed of

  •  None of these
  •  permanent cells
  •  immature cells
  •  Mature cells

7. The cells that make up the neurilemma in nerve tissue are

  •  Schwann cells
  •  Connective tissue
  •  Epithelial cells
  •  Erythrocytes

8. The function of connective tissue is

  • Protection
  • to help with the transportation of dissolved material from capillaries to epithelial cells.
  • to facilitate diffusion.
  • to hold the other tissues together.

9. Protein synthesis takes place in

  • DNA
  • Chromosomes
  • Ribosomes
  • None of these

10. Total number of amino acids in plants

  •  20
  •  10
  •  Plenty
  •  30

11. Monocytes are formed in

  •  Liver
  •  Spleen
  •  Bone marrow
  • all the above

12. An acrosome in a sperm is secreted by

  •  Centrioles
  •  Endoplasmic reticulum
  •  Mitochondria
  •  Golgi bodies

13. The first person to observe the bacteria, protozoa, and spermatozoa under the microscope was

  •  Leeuwenhoek
  •  Robert Hooke
  •  Matthias Schleiden
  •  Theodor Schwann

14. The function of a cell wall is

  • To give a definite shape to the cell.
  • To provide mechanical strength and protection to the cell.
  • To control the entry and exit of materials.
  • All the above

15. A mitochondrion possesses a

  • Two types
  • One type only.
  • Three types
  • There are four types.

16. Important metabolic reactions, both  in the nucleus and in the cytoplasm, marked by DNA replication as well as effective duplication of the chromosome in a mitotic cell, occur during

  •  anaphase
  •  prophase
  •  metaphase
  •  interphase

17. Who was the first to observe the plasma membrane?

  •  William Seifriz
  •  Schwann
  •  Palade
  •  None of the above

18. Which one of the following tissues in plants is responsible for forming various other types of cells?

  •  Conducting tissue
  •  Storage tissue
  •  Mechanical tissue
  •  Meristematic tissue

19. During protein synthesis, a particular kind of RNA acts as an intermediary between DNA and ribosomes. This is.

  •  rRNA
  •  tRNA
  •  mRNA
  •  cytoplasmic RNA

20. The DNA is composed of nitrogen bases.

  •  Guanine, Thymine, Uracil, Adenine
  •  Uracil, Adenine, Cytosine, Thymine
  •  Adenine, Cytosine, Guanine, Thymine
  •  Adenine, Cytosine, Uracil, Guanine

21. The period between two nuclear divisions, i.e., the resting phase of a cell, is referred to as

  •  interphase
  •  metaphase
  •  prophase
  •  telophase

22. Cells could arise only from pre-existing cells: this was proposed by

  •  Virchow
  •  Purkinje
  •  Matthias Schleiden and Theodore Schwann
  •  Robert Hooke

23. The nuclear membrane is absent in

  •  Prokaryotes
  •  Eukaryotes
  •  Protozoans
  •  All the above

24. Who designed the electron microscope?

  •  C.P.Swanson
  •  Robert Hooke
  •  Rudolf and Kolliker
  •  Knoll and Ruska

25. DNA is found

  •  Only in cytoplasm
  •  only in nucleus
  •  in hybrid form only
  •  in both cytoplasm and nucleus

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