The following are parts of the lymphatic system. Which is NOT responsible for making white blood cells?

A. bone marrow

B. lymph nodes

C. thymus

D. spleen

The organelle that facilitates cellular respiration is the

A population ecologist determines the number of oak trees per square unit in a forest. What is he trying to infer by doing so?

The part of the enzyme where the substrate binds is called the

Why would certain substances in the urine be an important diagnostic tool?

Which of these is NOT a stage where water can stay for many years as it travels through the water cycle? A. ice caps B. the ocean C. groundwater D. surface runoff

Describe logistic population growth from a small population to a large one. be sure you talk about the population growth rate (the numbers of individuals added to the population over time) and carrying capacity.

What are the key elements of cell theory? chose all that aply A. All living things are composed of one or more eukaryotic cells. B. Cells arise only from other cells. C. The cell is the basic unit of life. D.

How is polar molecule different from a non polar molecule

Fetures of unwarped mountains

What scientist discovered cells by observing cork with a homemade microscope