Sperm Cannot Fertilize an Ovum Unless It Has Been in the Female

question 15

Multiple Choice

Sperm cannot fertilize an ovum unless it has been in the female reproductive tract for several hours. This enhanced ability of the sperm to fertilize the ovum is called capacitation. In vitro studies indicate that freshly ejaculated sperm can fertilize the ovum if they are first rinsed in salt solution before being introduced to the ovum. These observations suggest that

• A) the process of capacitation involves the removal of some inhibiting substances from the sperm.
• B) pH is an important factor in the process of capacitation.
• C) in capacitation, secretions of the female reproductive tract are taken up by the sperm.
• D) the process of capacitation is temperature dependent.
• E) only sperm that come into contact with vaginal secretions are capable of fertilizing an ovum.

Understand the relationship between price changes and demand elasticity.

Grasp how production levels correlate with current and desired margins.

Recognize the characteristics of perfectly elastic and inelastic demand curves.

Determine the effects of income changes on the demand for normal and inferior goods.

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Definitions:

Diagnose

The process of identifying a disease, condition, or injury from its symptoms and signs through examination and testing.

Autopsy

A post-mortem examination of a body to determine the cause of death or the extent of disease, performed by a pathologist.

Delirium

A serious disturbance in mental abilities that results in confused thinking and reduced awareness of the environment.

Undetected

Pertains to something not being discovered or noticed, often used in medical or psychological contexts.