Pits are large and allow movement of large molecules through tracheids.

true or false?

salt ions are smaller than bacteria

true or false?

Describe three events that you cannot explain

According to the process of natural selection, individuals having variations that give them an advantage in obtaining limited resources will likely? A) be preserved B) survive and reproduce C) diverge markedly D) evolve

Motor proteins require energy in the form of ATP. ATP hydrolysis results in a conformational change that allows the protein to move along microtubular tracks (pathways).

Which element accounts for half of the dry weight of cells?

Which concept is demonstrated by a decrease in dull coloring? A. speciation B. biodiversity C. natural selection D. variation

Which of the following will a bacterium produce when a human gene is added to its genome? A) human plasmids that can be isolated from the bacterium B) The human protein coded for by the human gene C) a protein made up of both human and bacterial

Which type of mutation occurs reproductive cells and can be passed to offspring

Describe the main characteristic of a eukaryotic cell? Describe the main characteristic of a prokaryotic cell

The genetic code is based on sequences of three bases called

Explain an important thing to remember as you turn the high power objective into place