TRUE-FALSE: The following statements are ways to take care of our cells to prevent cancer and conserve the biosphere on a local scale. Write true if the statement is true. If the statement is false, replace the underlined word(s) to make the statement true. Write your answer before the number.

1. Not all substances can cross the plasma membrane. For this reason, the cell membrane is said to be permeable.
2. The cell membrane provides structure and support in plant cells.
3. The organelle that digests molecules, old organelles, and foreign substances is the mitochondrion.
4. The cytoplasm found between the plasma membrane and nucleus is a fluid structure.
5. The nucleus contains the DNA of the organism.
6. All living things are made up of cell.
7. Both plant cell and animal cell have chloroplast.
8. The plant cell can also be larger than the animal cell.
9. The invention of the microscope by Robert Hooke led to the understanding of the cell as the basic unit of life.
10. Only plant cell has cell wall.

II. Instructions: Fill in the blank with the appropriate term. Choose the right answer in the box below.

11. The is often considered to be the cell’s control center.
12. The consists of everything inside the plasma membrane of the cell.
13. The plasma membrane forms a between the inside and outside of the cell.
14. The is essentially a “skeleton” inside the cell.
15. The rough endoplasmic reticulum is covered with .
16. Lysosomes use to break down foreign matter and dead cells.
17. The endoplasmic reticulum is an organelle that helps make and transport and lipids.
18. Mitochondria are sometimes referred to as the of the cell.
19. Centrioles help make sure each daughter cell has the correct number of after the cell divides.
20. Cilia and are extensions of the plasma membrane of many cells.

III. Direction: Choose the letter of the best answer. Write the chosen letter on before the number.
21. Name the organelle that protects and supports the cell, and it is only found in plants?
A. Nucleus
B. Cell Wall
C. Cytoskeleton
D. Cell Membrane
22. Which of the following are NOT found in animal cells
A. chloroplasts and cell wall
B. mitochondria and nucleus
C. chloroplasts and cytoplasm
D. cell wall and cell membrane
23. The nucleus is like the of the cell.
A. brain
B. foot
C. hand
D. stomach
24. Which of the following converts food into energy for the cell?
A. cell membrane
B. cytoplasm
C. mitochondria
D. vacuole
25. Which organelle takes in "sun showers" and helps plants with the process of photosynthesis?
A. Chloroplast
B. Cytoplasm
C. Mitochondria
D. Vacuole

IV- Write the function of each part of the cell.
26. Nucleus- ___________________________
27. Mitochondrion -_
28. Golgi Bodies- _
29. Lysosome-
30. Ribosome- __________________________________

27. Mitochondria are the "powerhouses" of the cell, breaking down fuel molecules and capturing energy in cellular respiration. Chloroplasts are found in plants and algae. They're responsible for capturing light energy to make sugars in photosynthesis.

28.A major function is the modifying, sorting and packaging of proteins for secretion. It is also involved in the transport of lipids around the cell, and the creation of lysosomes. The sacs or folds of the Golgi apparatus are called cisternae.

29.Lysosomes are spherical, membrane bound organelles that are generated by the golgi apparatus. They contain hydrolytic enzymes, and so function as part of the recycling system of the cell.

30.Ribosomes have two main functions — decoding the message and the formation of peptide bonds. These two activities reside in two large ribonucleoprotein particles (RNPs) of unequal size, the ribosomal subunits. Each subunit is made of one or more ribosomal RNAs (rRNAs) and many ribosomal proteins (r-proteins).

Explanation:

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