Q: What do willow trees produce to kill bacteria? Choices: - facultative acid - Posion - bacterial acid - salicylic acid A:
salicylic acid

Q: Sickle cell disease is caused by production of an abnormal type of what? Choices: - fat globule - thrombocyte - leukocyte - hemoglobin A:
hemoglobin

Q: Q: Vertebrates evolved from primitive forms of which creature? Choices: - arthropods - humanoids - cephalopods - chordates A:
A: chordates

Question: Q: What two things collide to cause gas pressure? Choices: - gas particles and an electron - light particles and an object - gas particles and a wave - gas particles and an object A:
Answer: gas particles and an object

*Question*
Q: What is the largest cartilaginous fish? Choices: - dolphin - blue whale - sturgeon - whale shark A:
**Answer**
whale shark

Q: Q: What can be thought of as the fundamental unit of life? Choices: - ion - atom - electron - cell A:
A: cell