Which organism first appeared during the Cenozoic era? A. cyanobacteria B. trilobite C. wolf D. dinosaur

is it b or a or d? i know its not wolf

Suppose that you have a particular S. cerevisiae mutant strain that cannot make the amino acid leucine. Will the strain grow on a YPD plate? What about a SD plate? How could you modify the SD plate to allow this strain to grow?

How many calories per gram does fat release

Explain the value of testing and retesting ideas scientificly

Why does salt melt frogs

DNA is a nucleic acid found in all living cells. What is one reason DNA is linked to all body functions? A DNA secretes the proteins that cells need to work. B DNA produces five-carbon sugars that can be used for energy.

How does efficiency and conservation work together?

A nurse is administering medications to a client diagnosed with hepatitis b. when the nurse hands the client his/her medications, the client says, "i would rather not take that pill or any others. i know there is no cure for hepatitis b.

Differences between an artificial and a "normal" heart.

The receptive surface for pollen on an angiosperm flower is the (A) anther (B) corolla (C) ovary (D) style (E) stigma

Both liquids and ___ exert a buoyant force