[Q] Which of the following affects neurons?
Options:
- (A) nerves
- (B) voltage
- (C) Dehydration
- (D) electrically
- (E) heat
- (F) Botulism
- (G) fever
- (H) temperature
[A] Here's my solution: Neurons are the structural and functional units of the nervous system. Botulism affects the nervous system. Botulism affects neurons. The answer is (F).

[Q] What lacks walls and membranes?
Options:
- (A) deserts
- (B) flower cells
- (C) viruses
- (D) fungi
- (E) tree cells
- (F) bacteria
- (G) plant cells
- (H) alpacas
[A] Here's my solution: Viruses are not cells. Plant cells are surrounded by a cell membrane and a cell wall. Viruses do not have walls and membranes. The answer is (C).

[Q] Where does the energy to evaporate perspiration come from?
Options:
- (A) heat produced
- (B) The Sun
- (C) goosebumps
- (D) electrical energy
- (E) kinetic force
- (F) body heat
- (G) heat energy
- (H) energy
[A] Here's my solution: Evaporation of sweat uses energy, and the energy comes from body heat. Sweat glands pump perspiration through pores. Perspiration comes through pores and is evaporated by energy from body heat. The answer is (F).

[Q] What is the evolution over a geologic time in a specific kind of organism called?
Options:
- (A) solid, liquid, gas
- (B) peachleaf willow
- (C) Plants growth
- (D) macroevolution
- (E) barnacles
- (F) permineralization
- (G) animals
- (H) graptolites
[A]
Here's my solution: Macroevolution is evolution over geologic time above the level of the species. Species are the different kinds of organisms. Macroevolution is evolution over geologic time above the level of the kind of organism. The answer is (D).