Describe the structure of hemoglobin
What will be an ideal response?
Hemoglobin is a protein found in erythrocytes that consists of four polypeptide subunits: two alpha chains and two beta chains. Each chain is bound to an iron-containing compound called a heme group. The iron ion in each heme binds to oxygen and becomes oxidized.
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A condition in which the brain is substantially missing is
A. spina bifida. B. muscular dystrophy. C. amyotrophic lateral sclerosis. D. anencephaly. E. cerebral palsy.
An acid:
a. has a pH greater than 7 b. has a pH less than 7 c. has more OH– ions than H+ ions in solution d. both A and C above
The right hypochondriac region contains the majority of the stomach
Indicate whether this statement is true or false?
In this figure showing an anterior view of the heart, what is depicted by number 7?
A. Pulmonary semilunar valve B. Aortic semilunar valve C. Right atrioventricular valve D. Right atrium E. Left ventricle