Why is a uranium isotope often used rather the 14C in radiometric dating to determine the age of Earth?

Mutations that can affect the offspring of an organism occur in what cell type?

Where do anaerobic bacteria live?

What are the two major parts of a eukaryotic cell?

Which medical procedure involves liquid nitrogen being sprayed or painted onto a small malignant lesion to freeze and destroy the tissue?

Explain the role of calcium ions (Ca2+) in the sliding filament theory of muscle contraction? Explain the importance of the proper function of ATP in this process. Theorize what may happen if there were a breakdown of ATP production.

Polydactylism is a dominant trait that results in extra fingers and toes in humans. A polydactyl man marries a woman with 10 fingers and toes. They have a child that has a normal number of digits.

Why are some sediments smaller than others

Ethanol is produced during what cycle or fermentation

Explain briefly why there is a limitation on how big a cell can be. Include in your explanation the relationship between a cell's size and its surface area and how this affects what the cell can do.

Which effect is most likely caused by nondisjunction during meiosis? A. an extra chromosome B. an increase in nuclei C. increased survival benefits from traits D. only two types of nitrogenous bases