Recall Pasteur's Experiment on Spontaneous Generation

question 29

Multiple Choice

Recall Pasteur's experiment on spontaneous generation.If he had just warmed the nutrient-rich broth,rather than boiled it,what would have been the likely outcome of his experiment?

• A)Cells would not have appeared in either flask.
• B)Cells would have appeared in both flasks.
• C)Cells would have appeared in the swan-neck,but not the straight-neck flask.
• D)Cells would have appeared in the straight-neck,but not the swan-neck flask.

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Definitions:

Paracrine Chemical Messengers

Substances released by cells that affect other nearby cells, allowing for local cell communication.

Placental LH-like Hormone

A hormone produced by the placenta that is structurally similar to luteinizing hormone (LH) and supports the corpus luteum, maintaining the production of progesterone during early pregnancy.

Trimester

A term describing a period of three months, often used to divide the nine months of pregnancy into three stages, each with its own developmental milestones.

Melatonin Secretion

The release of melatonin, a hormone regulated by the pineal gland, which influences sleep-wake cycles and circadian rhythms.