You might wonder why, if the doctor was so worried about pulmonary hypertension in this client, she did not just measure it. the answer is simple - where would she have put the blood pressure cuff? she could hardly open the patient's chest to put a cuff around one of his pulmonary arteries.

Astudent observes a star from two positions of earth in its orbit, in summer and winter, and measures the change in the position of the star. which of these can be best calculated by this method?

Did you know that a single bee would have to go to over 2 million flowers to make a single pound of honey?

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.