Q: Contributing to the blood-brain barrier is one of the jobs of glial cells, which support neurons in what system? A:
OPTIONS:
- peripheral nervous system
- circulatory system
- digestive system
- central nervous system
central nervous system

Q: Characterized by a short lifespan, what begin with production in the bone marrow under the influence of csfs and interleukins? A:
OPTIONS:
- solutes
- pathogens
- erythrocytes
- leukocytes

Answer: leukocytes

Question: Q: Deer ticks are vectors for the bacteria that cause what disease? A:
OPTIONS:
- Dengue fever
- malaria
- mad cow
- lyme
Answer: lyme

input with options: Q: What term describes motion that repeats itself at regular time intervals, such as exhibited by a vibrating guitar string? A:
OPTIONS:
- gravitational pull
- specific speed
- apparent motion
- periodic motion
output: periodic motion

Q: Q: According to collision theory, particles that lack what kind of energy may collide, but the particles will simply bounce off one another unchanged? A:

OPTIONS:
- elastic energy
- residual energy
- viscosity energy
- kinetic energy

A: kinetic energy

Q: Land could not be colonized by other organisms until what became established? A:
OPTIONS:
- gases
- carbon dioxide
- oxygen
- plants
plants