Q: The presence of what in leaf cells makes most leaves appear green? Choices: - hydrogen - sodium - carbonate - chlorophyll A:
chlorophyll

Q: What are the basic building blocks of the human body? Choices: - proteins - minerals - vitamins - cells A:
cells

Q: Q: Does blood flow increase or decrease when blood vessels constrict? Choices: - it's not affected - increases - it stops - decrease A:
A: decrease

Question: Q: What is a silver-colored alkaline earth metal that is even softer than calcium? Choices: - mercury - magnesium - lithium - strontium A:
Answer: strontium

*Question*
Q: What do you call the fragments of cells involved in the clotting process that are suspended in blood plasma? Choices: - hematocrit - ironites - hemoglobin - platelets A:
**Answer**
platelets

Q: Q: Receptor clustering happens when what binds to the receptors? Choices: - enzymes - lipid molecules - carbohydrates - fas molecules A:
A: fas molecules