How did Mendeleev arrange the elements in the first periodic table? A. In order of increasing melting points and densities.

B. In order of increasing atomic mass.

C. In order of decreasing atomic mass.

D. In order of increasing atomic number.

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.