If a molecule has opposite charge distributions, resulting in partial negative and partial positive charges at opposite ends; that molecule is said to be

In DNA, which base pairs with T?

The net products of photosynthesis are [1] and [2]

Which is the accurate description of a phospholipid bilayer?

The net effect of transporting electrons through the electron transport chain from the electron donor to the electron acceptor is to

Hydrocarbons such as methane, propane and butane have lots of C–H bonds which give them which two properties

The chemical symbol for Sodium is

Which condition guarantees a process is spontaneous?

Which statement best sums up the flow of energy through living systems?

Darwin observed that the finches on one of the islands of the Galapagos had beaks that were large and strong and used for cracking open the hard exterior of nuts to get to the nutrients inside. He postulated that long ago, the finches had weak beaks like those of neighboring islands, but those finches with slightly stronger beaks could eat more nuts, have more food and have a better chance of surviving long enough to produce offspring. Their offspring would inherit the genes for strong beaks, and they in turn would be more likely to reproduce. Over time all the finches would have beaks that were strong as they would out compete those finches with weaker beaks.  This is an example of