Q: Fact 1: Plasma cells are activated B cells that secrete antibodies. Fact 2: Antibodies are produced by plasma cells. Given the two facts above, what secrete antibodies?

OPTIONS:
- parasites
- barnacles
- the body's largest organ
- major threat to health
- activated b cells
- resistance activities
- fur seals
- it keeps an organism warm

A: activated b cells

Q: Fact 1: Invertebrates are animals that lack a vertebral column, or backbone. Fact 2: Insects are the most common invertebrates. Given the two facts above, what do insects lack?

OPTIONS:
- sensory neurons
- the body's largest organ
- a vertebral column
- wings
- legs
- Chlorophyll
- a cuticle
- reproductive system

A: a vertebral column

Q: Fact 1: Roundworms make up the phylum Nematoda. Fact 2: Nematodes are simple roundworms. Given the two facts above, what phylum are Nematodes in?

OPTIONS:
- Most plants
- ferns
- parasites
- Epidermis
- white
- insects
- graptolites
- Nematoda

A: Nematoda

Q: Fact 1: Vesicle transport requires energy, so it is also a form of active transport. Fact 2: Neurotransmitters are released from vesicles. Given the two facts above, the transport of what requires energy?

OPTIONS:
- communication
- microorganisms
- colors of the spectrum
- Something to move
- salamanders
- Neurotransmitters
- an object
- Veins and arteries.

A:
Neurotransmitters