Logic of a solution: *Viruses infect and live inside the cells of living organisms. If the virus is nonenveloped it is released by lysing the host cell. Infection by viruses leads to lysing and release.*
*(D)*
The original question: *Viruses first infect, then they release into the host by doing what?
Options:
- (A) Cooking
- (B) kill them
- (C) harm them
- (D) lysing
- (E) illness
- (F) fever
- (G) migrate
- (H) propagate*

Logic of a solution: *Thyroid hormones increase the rate of metabolism in cells throughout the body. Thyroxine, a thyroid hormone, is an aryl iodide. Thyroxine increase the rate of metabolism in cells throughout the body.*
*(A)*
The original question: *What increases the rate of metabolism in cells throughout the body?
Options:
- (A) Thyroxine
- (B) Smoking
- (C) fever
- (D) bioaerosols
- (E) acetic acid
- (F) sweating
- (G) Power plants
- (H) heat produced*

Logic of a solution: *Invertebrates are animals that lack a vertebral column, or backbone. Snails and slugs are invertebrates. Snails and slugs lack a backbone.*
*(G)*
The original question:
*What do snails and slugs lack?
Options:
- (A) eyes
- (B) a nervous system
- (C) kinetic energy
- (D) Chlorophyll
- (E) Energy.
- (F) life
- (G) a backbone
- (H) Energy*