Explain how the following organelles ensure that a cell has the proteins it needs: nucleus, rough ER, vesicles, and Golgi apparatus.

Which of these products is formed during the metabolic reactions of cellular respiration?

Why do humans make synthetic resources

When is the net movement of water equal to zero?

Use what you know about fossils to choose the correct answers from the drop-down menus to complete each statement If the same organism appears on two different continents, this is evidence of Fossils show how organisms change, or over time.

How is hepatitis A different from hepatitis B? Would a vaccine against A protect against B?

Competition over resources occurs between organisms

What is the percentage of human guanine

A gram-negative, nonsporulating rod that is highly motile, oxidase negative, facultatively aerobic, ferments glucose, and urease-positive is likely to be of which genus?

3. Explain Peter and Rosemary Grants study of finches. How did this support Darwin's hypothesis.

Can an organ belong to more than one system? Why?