A. Examine the codon chart provided above (for #s 3-5), and determine what mutation likely occurred to cause the change from glutamic acid (GLU) to valine (VAL). To help get you started,
it is helpful to know that a person with NO sickle cell at amino acid #6 has a DNA code of CTC.
(4pts)
Normal RNA:
Normal amino acid made:
Mutated RNA:
Mutated amino acid made:
What type of mutation is this?

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.

1. in what ways have non-native species been beneficial? 2. what are some of the hypotheses for the collapse of honeybee colonies? 3. distinguish between regional and functional extinction. 4. why is it difficult to measure background extinction rates? 5. what three factors are most important in causing extinction rates to climb?