A Common Trick to Open the Lid of a Jar

question 124

Multiple Choice

A common trick to open the lid of a jar that is stuck is to put the lid under hot running water. Suppose the diameter of the lid of a jar of strawberry jam is 6 cm. By how much does the circumference change if the temperature is increased by 30°C? Assume the lid is made of steel.

• A) 2.0 × 10^-3 cm
• B) 3.1 × 10^-3 cm
• C) 4.1 × 10^-3 cm
• D) 6.2 × 10^-3 cm
• E) 5.2 × 10^-3 cm

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Definitions:

Cell

The basic structural and functional unit of life, which consists of living material enclosed by a membrane.

Acetyl CoA

A molecule that plays a central role in metabolism, linking the glycolysis and citric acid cycle pathways.

Citric Acid Cycle

Series of chemical reactions in aerobic cellular respiration in which acetyl coenzyme A is completely degraded to carbon dioxide and water with the release of metabolic energy that is used to produce ATP; also known as the Krebs cycle and the tricarboxylic acid (TCA) cycle.

Glycolysis

The first stage of cellular respiration as well as fermentation; literally the “splitting of sugar.” The metabolic conversion of glucose into pyruvate, accompanied by the production of ATP