About 225 million years ago, North America and South American were part of one huge landmass, Pangaea.

Which blood vessel directly carries blood into the capillaries?

What is critical to the synthesis of thyroxin, the hormone that controls the rate of oxygen use by cells, and whose deficiency causes the condition known as goiter?

Which of the following statements about the import of protein to the nucleus is correct? Choose all that apply. a. An NLS can be a monopartite or bipartite signal which includes a significant number of basic amino acids. b.

9 The diffusion of water through a cell membrane

What specific naming system did Carolus Linnaeus develop? A.) polynomial nomenclature B.) binomial nomenclature C.) taxonomy D.) classification

What is a called when organisms that cannot make their own energy-rich molecules?

How did Mendel make the F1 generation for his experiments?

Write a paragraph about an insects habitat.

Because most leaves have two sides, do you think you have to double your calculation to obtain the surface area of one leaf? Why or why not?

Which of the following intermediary metabolites enters the Krebs cycle and is formed, in part, by the removal of CO2 from a molecule of pyruvate? A) lactate B) glyceraldehyde phosphate C) oxaloacetic acid D) acetyl CoA E) citric acid