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Cell Structure and Function Worksheet

1. Which is a function of microfilaments?
a. Cytoplasmic streaming
b. Formation of the cytoskeleton
c. Movement of flagella
d. Cytoplasmic streaming and formation of cytoskeleton

2. In which organism(s) would you find cell walls?
a. An intestinal bacterium
b. A dandelion
c. A tiger
d. An intestinal bacterium and a tiger

3. Chlamydomonas is a motile, unicellular, photosynthetic organism. It has a membrane nucleus, mitochondria, and chloroplasts, but lacks a cellulose cell wall. Which statement best describes Chlamydomonas?
a. It is a true plant because it is photosynthetic and has a cell wall.
b. It is a eukaryotic animal because it is motile and has mitochondria.
c. It is a prokaryote because it lacks a cellulose cell wall and a nuclear membrane.
d. It is a eukaryotic protist because it has membranous organelles and is unicellular.

4. Which organism has cell walls?
a. A giant kelp
b. A domestic cat
c. A parakeet
d. A rabbit

5. Which does not describe chloroplasts?
a. They are found in plant and animal cells.
b. The internal membrane forms the thylakoids.
c. They contain DNA.
d. They are green because of the pigment chlorophyll.

6. In which of these cells would you expect to find the most chloroplast activity?
a. Growing muscle cells
b. Plant root cells
c. Plant leaf cells
d. Growing muscle cells and plant leaf cells

7. Which organelle is not made of membrane?
a. Ribosome
b. Nucleus
c. Lysosome
d. Golgi body

8. Ribosomes are often attached to the continuous network that allows the distribution of substances throughout the cytoplasm. This network is called the:
a. Nuclear envelope
b. Endoplasmic reticulum
c. Cell membrane
d. Golgi apparatus

9. Which of the following structures contains digestive enzymes?
a. Chromosomes
b. Ribosomes
c. Lysosomes
d. Nucleoli

10. A cytoplasmic organelle that is thought to function in intracellular transport is the:
a. Cell membrane
b. Lysosome
c. Mitochondrion
d. Endoplasmic reticulum

11. The organelle that functions as a storage and packaging site for certain products (such as hormones, enzymes, fats) that are formed elsewhere in the cell is the:
a. Lysosome
b. Golgi apparatus
c. Endoplasmic reticulum
d. Mitochondrion

12. The cell (plasma) membrane is able to regulate the movement of substances in and out of the cell because it consists mainly of:
a. Starch and lipids
b. Amino acids and sugar
c. Protein and lipids
d. Starch and amino acids

13. The cell is considered to be the fundamental living unit because:
a. It contains DNA, RNA and organelles of life.
b. It is composed of a nucleus and cytoplasm.
c. It is the smallest part of an organism that is visible through the light microscope.
d. It is the smallest entity that exhibits growth, metabolism, self-regulation and reproduction.


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