Which of the following processes takes place during prophase?

A. Nuclear membranes form around two sets of chromosomes.

B. Spindle fibers pull the sister chromatids apart.

C. Chromosomes condense.

D. Chromosomes are copied.

What are some characteristics of a free enterprise economy?

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.

Match each phylum or class to its correct characteristic