What is the main need or want the wave technology shown meets?

A. To diagnose health problems more quickly

B. To keep teeth clean and healthy more easily

C. To stay in touch with family more efficiently

D. To see objects surrounding more clearly

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.