Cell structure and function Worksheet-2

Cell structure and function Worksheet-2

Fill in the blanks:

1. Robert Hooke coined the term _____.

2. ­­­­_____ is the smallest cell organelle.

3. ______ is the cell organelle which generates energy rich compound called ATP.

4. Nucleus was first discovered by ______.

5. _____ is known as the smallest bacteria.

6. _____ is present around the nucleus, which is limited by plasma membrane.

7. The ______ of cell allows or permits the entry and exit of some materials.

8. The organisms, whose cells lack a nuclear membrane, are called ______.

9. _____ is a site for biochemical reactions to occur.

10. Mycoplasma is a smallest _____.

11. Rough Endoplasmic Reticulum is rough due to presence of _____.

12. Mitochondria are known as the _____ of the cell.

13. _____ contains thread-like structures called chromosomes, which carry genes.

14. _____ develop spindle fiber during cell division.

15. Chloroplasts are sites for ______.

16. Green coloured plastids are called ______.

17. Chloroplast contains green pigment called ______.

18. The outer layer of the vacuole is called ______.

19. Nucleus is separated from the cytoplasm by a membrane called the ______.

20. Cells → tissues → _____ system.

21. The smallest known cell is ________.

22. Mitochondria are found in all ____ cell.

23. The ____ is the boundary between a animal cell and its environment.

24. The main controlling centre of the cell is the ______.

25. The cytoplasm and nucleus are enclosed within the cell membrane, also called the ____ membrane.

26. The cell of a ____ carries out all the life processes.

27. The membrane found around a vacuole in a plant cell is called _____.

28. ______ is the basic unit of life.

29. Cell wall is made up of ______.

30. All organisms other than bacteria and blue green algae are called _____.

Answer:

1. Cell/cella/cells

2. Ribosome/ribosomes

3. Mitochondria/mitochondrion

4. Robert brown/Robertbrown

5. PPLO/pplo/pleuro pneumonia like organism

6. Cytoplasm

7. plasma membrane/ plasmamembrane

8. Prokaryotes/ prokaryote

9. Cytoplasm

10. Cell/cells

11. Ribosome/ ribosomes

12. Powerhouse/ power house

13. Nucleus

14. Centrioles/ centriole

15. Photosynthesis

16. Chloroplasts

17. Chlorophyll

18. Tonoplast

19. Nuclear membrane

20. Organ

21. PPLO

22. Eukaryotic

23. Plasma membrane

24. Nucleus

25. Plasma

26. Unicellular

27. Tonoplast

28. Cell

29. Cellulose

30. Eukaryotes