The DNA molecule is described as a double helix. Describe the meaning of this expression and the general structure of a DNA molecule.

What statement best summarizes Gregor Mendel's contribute to science? A. Mendel invented the green pea by cross breeding thousands of pea plants. B. Mendel discovered green peas and yellow peas. C. Mendel is considered the "Father of genetics." D.

What is the proper organizatio of muscle tissue large to small?

List three reasons that snow predictions made by meteorologists are sometimes incorrect

What is the smallest particle representing water? A. Hydrogen Atom B. Molecule C. Diatomic Oxygen D. Oxygen Atom

How would you classify the relationship between the different species of coral?

Why is it possible for a liquid to take the shape of its container? A. Molecules of a liquid don't move at all. B. Molecules in any liquid are very far apart. C. All the particles in a liquid are round and smooth. D.

Which of the following is correctly matched with its tissue system? 1) cortex/dermal tissue system 2) cuticle/vascular tissue system 3) phloem/dermal tissue system 4) stele/vascular tissue system

Sickle cell anemia is an inherited disorder. Which of the following is a true statement about sickle cell anemia?

In a species of dogs, a black coat is dominant over a white coat. The offspring from a black dog and a white dog all have gray coats. This is an example of 1) incomplete dominance 2) complete dominance 3) codominanc 4) sex-lined genes

This is produced when the liver converts the carbon skeleton of an amino acid.