What is cancer? Explain what a doctor means when he or she says the cancer has “metastasized.” (Provide examples)

What are some natural processes that represent physical and chemical changes?

What are the pros and cons of transect sampling?

True or false: (a) the strings of little red dots represent carbohydrates. (b) the model is called a bilayer because there are two main types of molecules present, lipids and proteins. (c) the many black lines represent amino acid tails. (d) this model shows membrane transport. (e) the blue ovals are hydrophobic. (f) the blue ovals represent phospholipid heads.