Which of the Following Substances Would Have the Most Trouble

question 27

Multiple Choice

Which of the following substances would have the most trouble crossing a biological membrane by diffusing through the lipid bilayer?

• A)a small,nonpolar molecule such as butane (C4H10)
• B)CO2
• C)Na+
• D)O2

---

Definitions:

Sex Hormones

Chemical substances produced by the body that regulate sexual functions and characteristics, including estrogen, testosterone, and progesterone.

Genetic Linkage Studies

Studies in which researchers examine families that have a high incidence of a particular psychiatric disorder. Within these extended families the researchers look for the presence of particular traits (called genetic markers) that can be linked to the occurrence of the disorder.

Psychiatric Disorder

A mental disorder or illness that significantly interferes with an individual’s cognitive, emotional, or social abilities, often diagnosed and treated within the field of psychiatry.

Genetic Markers

Specific sequences of DNA or RNA that can be used to identify individuals or species and are often used to study the relationship between an inherited disease and its genetic cause.