This body system maintains homeostasis by using blood to carry nutrients to cells and taking away carbon dioxide

True or False: Meiosis halves the chromosome number, whereas mitosis maintains the same chromosome number.

Where is the tundra biome located? A. near the Tropic of Cancer B. near the Tropic of Capricorn C. just below the Arctic circle D. just above Antarctica

The phase in which killer t cells strike at foreign cells and at cells of the body that have been invaded and infected is called

A boy cuts his hand while playing in the park. The stimulus reaches the interneurons. What nerve pathway will this stimulus signal continue to follow in order to lift his hand from the sharp object?

Which level of organization refers to all the type of environments in which organisms can be found?

Why are most plants thin with a broad surface

A lab technician observes a unicellular organism with two long flagella and two nuclei in the blood smear of a person. To which phylum does this protozoan belong? A. Zooflagellata B. Ciliata C. Sarcodina

Which is an example of a chemical defense in your skin? growing long hair shredding dead skin sweating palms developing calluses

Why is DNA ligase so Important in recombinant DNA technology

What is the diffrence of pulmanary artery and pulmanary veins?