Stem cells in human bone marrow divide and differentiate to form various A) neurons. B) hormones. C) osteocytes. D) blood cells.

Which of these items would be a renewable resource? A) fish B) gold C) oil D) gasoline

What is the name of the five carbon acceptor molecule of the Calvin cycle? What enzyme catalyzes the Calvin Cycle?

What happens to the chromosomes during the second division?

Which of the following is not a cause of water pollution

According to the climate zone map, a desert may be either hot or cold, but is always characterized by dry conditions. true or false

Plant growth is dependent on the amount of fertilizer applied. That was the hypothesis Mel and Bill decided on for their science project. They planted identical seeds in the same potting mix, in similar pots.

Explain why the process of mitosis is important in cells

Corn smut is a fungus that grows in the ears of corn and changes corn kernels into black, powdery balls of fungus tissue. What would you hypothesize is the significance of the relationship between corn smut and corn?

Can the water cycle ever end?

Robert leaves a chocolate bar in his car while attending school all day. When he goes to his car in the afternoon, the bar has changed into a gooey liquid.