Consider a beaker that is separated into two parts by a biological membrane, and some type of molecule is dissolved in water on both sides. At the beginning of an experiment, the molecule is present in equal concentrations on both sides of the membrane (as shown in the figure on the left) and at the end of the experiment, the molecule is present at a higher concentration on one side than the other (as shown in the figure on the right). Which of these statements about this experiment MUST be true?

Which of the following statements about proteins that facilitate transport across a membrane is true?

The cilia in human cells and the cilia in tetrahymena (a protozoan) are very similar in their structure and function. The best explanation for this is that

In order to eliminate domestic violence against women, a feminist would propose ______.

Enzymes are specific for particular reactions because 

Sugars, like glucose, are ______.

What does it mean that hypotheses are “falsifiable”? 

The category of biological macromolecules that has the greatest diversity of shape/structure and also the greatest diversity of function is which of these?

What kinds of molecules can pass through a phospholipid bilayer most easily? 

Which of the following represents a polar bond?