Biology Cells, Cell Definition, Discovery of Cells, Characteristics of Cells, Types of Cells.
The essence of living organisms is embodied by Biology cells, the basic units of life. Cells have a rich history, with their discovery representing an important moment in biology by defining them as the underlying structures and functional units of all life forms. Initially observed by Robert Hooke in 1665 through a rudimentary microscope, cells were further elucidated by Anton van Leeuwenhoek’s microscopic observations of microorganisms. See more of the intriguing topics at Nokryan.com and explore them further.
1. Prokaryotic cell wall is formed of ?
- All of abovecorrect
- Peptidoglycan
- Polysaccharide plus shorterr chains of amino acids
- Murein
2. Contraction and relaxation are the characteristics of ?
- Muscle cellscorrect
- Nerve cells
- Tendons
- Gland cells
3. The photosynthetic cells of green plants are also called ?
- Chlorenchymatous cellscorrect
- Meristematic cells
- Sclerenchymatous cells
- Parenchymatous cells
4. The rough surfaced endoplasmic reticulum is involved in the synthesis of ?
- Glycolipids
- Proteinscorrect
- Lipids
- Carbohydrates
5. The free floating cell organelles move about in cytoplasm due to cytoplasmic ?
- Wavy movement
- Streaming movementcorrect
- To and fro movement
- Oceanic movement
6. Detoxification of harmful drugs is the function ?
- BOTH RER AND SER
- Mitochondria
- SERcorrect
- RER
7. The cell nucleus was discovered by ?
- Robert Browncorrect
- Robert Hooke
- Schwann
- Virchow
8. Prokaryotic cell wall lacks ?
- Cellulose
- All of thesecorrect
- Lignin
- Hemicellulose
9. Fungal cell wall is made up of ?
- Cutin
- Cellulose
- Pectin
- Chitincorrect
10. The surplus food is stored in ?
- Parenchymatous cellscorrect
- Chlorenchymatous cells
- Photosynthetic cells
- Meristemetic cells
11. All the living content of a eukaryote cell is called ?
- Nucleoplasm
- Protoplasmcorrect
- Cytosol
- Cytoplasm
12. Growth and development of plant is the function of ?
- Meristematic cellscorrect
- Chlorenchymatous
- Parenchymatous cells
- Sclerenchymatous cells
13. SER also helps in metabolism of a number of different types of molecules, particularly ?
- None of these
- Proteins
- Lipidscorrect
- Carbohydrates
14. Cellulose molecules are arranged in a ?
- Criss-cross arrangementcorrect
- Peculiar arrangement
- Straight fibres arrangement
- Random arrangement
15. The cell theory was formulated by ?
- Pasteur and Schwann
- Schleiden and Weismann
- Schleiden and Schwanncorrect
- Schleiden and Shan
16. The intake of materials by the animal cells by forming vacuoles is called ?
- Mitosis
- Pinocytosis
- Endocytosiscorrect
- Phagocytes
17. The biggest cell in the world is the egg of ?
- Ostrichcorrect
- Kiwi
- Elephant
- Turtle
18. Palade was the first person to study the ?
- Peroxisomes
- Lysosomes
- Polysomes
- Ribosomescorrect
19. Ribosomes are chemically composed of ?
- RNA and proteincorrect
- Ribonucleoprotein
- Ribonucleoprotein, RNA and Protein
- Only protein
20. In electron microscope the resolution of microscope ranges between ?
- 1-4 Angstrom
- 2-6 Angstrom
- 2-4 Angstromcorrect
- 3-6 Angstrom
21. 60-80% of the chemical component of the cell membrane is the ?
- Carbohydrate
- Nucleic acid
- Proteincorrect
- Lipid
22. Cytoplasm is a site for certain metabolic processes such as ?
- Glyoxylate cyclecorrect
- Calvin cycle
- Kreb’s cycle
- Glyoxylate cycle
23. The cell was discovered by ?
- Robert Hookecorrect
- Lamarck
- Lorenz Oken
- Robert Brown
24. Omnis cellula-e-cellula was hypothesized by ?
- Rudolph Virchowcorrect
- Louis Pasteur
- Schleiden
- Lorenz Oken
25. The primary cell wall is composed of cellulose and some deposition of pectin and ?
- Silica
- Hemicellulosecorrect
- Chitin
- Lignin