Recall Pasteur's Experiment on Spontaneous Generation

question 28

Multiple Choice

Recall Pasteur's experiment on spontaneous generation. Originally, he used sealed and unsealed flasks instead of swan- necked and unsealed flasks. Critics claimed that the experiment was inconclusive. Which of the following criticisms would be addressed by using a swan- necked flask instead of the sealed flask?

• A) Fresh air is required for spontaneous generation.
• B) The broth was not nutritious enough.
• C) There had not been enough time for spontaneous generation to occur.
• D) The broth was heated too intensively.

---

Definitions:

Glomerular Capsule

A double-layered structure surrounding each glomerulus in the nephron of the kidney, involved in the filtration of blood to form urine.

Renal Tubule

A tiny tube in the kidney where reabsorption of water, ions, and nutrients occurs, and waste products are secreted.

Capsular Space

The cavity or space between the inner and outer layers of a capsule, often referring to the space within the capsule of the glomerulus in the kidney.

Basement Membrane

A thin, fibrous, extracellular matrix of tissue that separates the lining of an internal or external body surface from underlying connective tissue.