Using an electron microscope, a scientist identified these cell structures in an unknown organism: mitochondrion, nucleus, cell wall, and chloroplast. What kind of organism did the scientist find?

Why is the metric system easier to use than the English system?

Which of the following is a disadvantage of an in vitro experiment? O A. Results can be misleading. O B. A living cell is a complex chemical mixture. O C. Observations are easy to make. O D. An enzyme is never affected by other cellular components.

The peripheral nervous system includes the brain and spinal cord. A. True. B. False

What I'd the safest way to carry a microscope

One of the biggest problems facing underseas exploration is: A. lack of interest B. underwater pressure C. extreme cold temperatures D. lack of light on the ocean floor

Which of the following could describe a population that is decreasing in size

Which creature cannot survive in the presence of oxygen? Give Examples. What does the creature need to survive instead of oxygen?

Why nitrogen must cycle through an ecosystem

How many cell types are present in your groups set of organisms?

Which of the following is the functional unit of a myofibril? a. sarcomere b. myofilament c. sarcolemma d. endomysium