Which of the following can be considered fossils?

a. a 1 billion year-old rock.

b. a 1 billion year-old piece of amber.

c. a 1 billion year-old piece of amber with a primitive insect inside.

d. all of the above

The substances in cells are built up and broken down during development and metabolism. These processes are examples of what?

Hummus is not an example of a melting pot food, but an? Culture Staple foods Celebrated Traditional

Which of the followings will move fastest in an electrophoresis gel? ctga gtaacg tcg atcgact?

Why is stomach acid important?

Draw a graph about important steps in making a protein

Interesting facts about index fossils

What three steps can you take to insure both accurate and precise measurement

Plant cells have unique characteristics which distinguish them from other cells. Which of the following is characteristic of plant cells, but not animal cells? a. Vacuoles c. Nucleus b. Mitochondria d. Cell walls

What is the function of the nervous system?

5. Tactile receptors are especially abundant A. in the feet. B. in the face. C. in the lips. D. around the heart.