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List TWO differences between the structure of DNA and the structure of RNA.

List TWO roles of lipids in living organisms.

Even a tiny stimulus that does not reach threshold will generate an action potential?

A reaction in which two molecules combine (like glucose and fructose, to make sucrose) and water is produced as a byproduct, is called a(n) ______________ reaction.

3. Pulmonary artery pressure _______mmHg at rest signifies pulmonary hypertension

A trait inherited on chromosome #4 is present in the phenotype of people with two copies of the recessive allele, but not in anyone else. What type of inheritance does this trait have?

A thyroidectomized rat will still be able to produce triiodothyronine, but unable to convert it into thyroxine.

Where do most steps of aerobic respiration occur?

The benefit of a relative refractory period in a sensory neuron axon is that it is easier to modify the intensity of the sensation by altering the frequency of the stimulus.

A graph plotted with the radius on the X-axis and blood flow rate on the Y-axis will be linear.