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Are saturated or unsaturated fats generally solids at room temperature? Explain why there is a difference in the fluidity of these two related molecules.

Which of the following is a positively charged ion? 

List the three principles of the cell theory.

In DNA and RNA, there are four nitrogen bases that complement each other through base pairing. Which nitrogen base bonds with a different base in each nucleic acid.

Observe the structures of glucose and fructose below. These two molecules differ in the  G & F.JPG 

A trace element is one found in specific organisms in _____ quantities and is _____ for normal biological functions.

Which are some conditions that can denature proteins?

All cells have a nucleus with DNA to carry genetic information, a plasma membrane which serves as a selective barrier, and mitochondria for the generation of energy.

Which of the following statements most correctly represents the organization of living systems from smallest to largest?

Organelles(s) found in plant cells, but not in animal cells