The region of the open ocean where the north and south equatorial currents meet is deficient in nutrients and supports little life
Indicate whether the statement is true or false
FALSE
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How does sickle cell anemia reduce the blood’s ability to deliver oxygen to tissues?
a. The plasma membrane is too thick to allow oxygen to diffuse into sickle-shaped red blood cells. b. Sickle-shaped red blood cells puncture normal red blood cells, causing them to rupture and lose hemoglobin. c. Deformed red blood cells clog capillaries, preventing other red blood cells from passing through. d. Sickle cells contain a mutated form of hemoglobin that binds to half as many oxygen molecules.
Lipids, proteins, DNA, RNA, and complex carbohydrates are all ____
a. minerals b. atoms c. cells d. molecules e. elements
P elements cause which phenomenon responsible for sterility in Drosophila?
What will be an ideal response?
Therapeutic cloning successfully addresses the key problem of ________, which must be solved before embryonic stem cells can be used to repair damaged human organs.
A. producing a viable vector B. shortened life span C. intra-species transfer of specific genes D. immune acceptance