A (very small) sample of yeast DNA contains 100 bases total. 31 of the bases are adenine (A). Predict the number of Thymine, guanine and cytosine molecules. (Hint: think about base pairing rules!)
Number of:
A= 31
T=

helicase, i think thats it

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

voluntary muscles are controlled by the cerebellum.