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FIGURE 12-6
-A 3.00-kg ball rests in a frictionless groove as shown in Fig. 12-6.
(a) What is the normal force between the left side of the groove and the ball?
(b) What is the normal force between the right side of the groove and the ball?
Extracellular Matrix
A complex network of proteins, glycoproteins, and other molecules outside cells, providing structural and biochemical support to surrounding cells.
Smooth ER
A type of endoplasmic reticulum in cells, lacking ribosomes, involved in lipid synthesis, detoxification, and calcium ion storage.
Cholesterol
A waxy, fat-like substance found in all cells of the body, necessary for the production of hormones, vitamin D, and bile acids.
Basal Body
Structure involved in the organization and anchorage of a cilium or flagellum. Structurally similar to a centriole; each is in the form of a cylinder composed of nine triplets of microtubules (9 × 3 structure).
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