Which of the following types of molecules is most likely to be found embedded in plasma membranes to aid in cell-to-cell recognition?
A. Cellulose
B. Glycogen
C. Glycoprotein
D. Nucleic Acid

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables