One difference between carbohydrates and lipids is that
a. lipids will dissolve in water but not carbohydrates.
b. carbohydrates will dissolve in water but not lipids.
c. carbohydrates contain hydrogen, carbon, and oxygen and lipids do not.
d. lipids contain hydrogen, carbon, and oxygen and carbohydrates do not.

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons

The pronunciation aid that determines the stress placed upon a syllable is the