20. Which of the basic parts of the animal cell functions like a classroom door with entrance and exit points to controls students from coming in and out of the room? *
A. Cell Membrane
B. Cytoplasm
C. Cytoplasm
D. Protoplasm

21. How do you call an organism with only one cell? *
A. Cellula
B. Dominant
C. Multicellular
D. Unicellular

22. . Biologists arrived at a conclusion that formulated the cell theory. Which among the statements below are parts of the cell theory? I. All living things are made up of cells. II. All living cells come from pre-existing cells. III. All plants and animals are composed of cells. IV. Cells are the basic structural and functional unit of all organisms. *
A. I and II only
B. I and III only
C. I, II and IV only
D. II, III and IV only

23. What part of the cell controls the activity of the other parts?
A. Nucleus
B. Cell wall
C. Cell wall
D. Plasma membrane

24. Read the statement carefully. I. Chloroplast is the green pigment of plants. II. Chromoplast is the colored pigment of plants *
A. Statements I and II are TRUE.
B. Statements I and II are FALSE.
C. Statements I and II are FALSE.
D. Statement I is TRUE while statement II is FALSE.

25. Read the statement carefully. I. All multicellular organisms like plants and animals are eukaryotes. II-All prokaryotes like archaea and bacteria are unicellular *
A. Statements I and II are TRUE.
B. Statements I and II are FALSE.
C. Statement I is FALSE while statement II is TRUE.
D. Statement I is TRUE while statement II is FALSE

– Within cells, special structures are responsible for particular functions, and the cell membrane forms the boundary that controls what enters and leaves the cell.

21. D. unicellular

– Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms include bacteria, protists, and yeast.

22. C. I, II, and IV only

23. A. nucleus

– The nucleus contains genetic information that regulates the functioning of the various components of the cell.

24. D. Statement I is TRUE while statement II is FALSE.

25. A. Statements I and II are TRUE.

– Eukaryotes are organisms whose cells contain a nucleus and other membrane-bound organelles. There is a wide range of eukaryotic organisms, including all animals, plants, fungi, and protists, as well as most algae. Eukaryotes may be either single-celled or multicellular.

– A prokaryotic cell is a simple, single-celled (unicellular) organism that lacks a nucleus, or any other membrane-bound organelle

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