The "X" shaped chromosomal hereditary material can be packaged in this organelle in eukaryotic cells but not in prokaryotic cells. This organelle is the:
A. ribosomes.
B. mitochondria.
C. nucleoid.
D. chloroplast.
E. nucleus.
E
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Being heterozygous for the hemoglobin gene variant that causes the disease sickle-cell anemia can be advantageous in what situation?
A. in areas where malaria is endemic B. when iron intake is too low in the diet C. in elite athletes because it slightly decreases oxygen affinity D. when a person has anemia caused by other factors E. when a person is at high altitude
A blue, white, or yellow flower with pigments that reflect UV light is typically pollinated by ________
a. flies b. wind c. bees d. bats
Most of the carbon dioxide produced by the body is
transported to the lungs a. in gaseous form. b. in blood plasma. c. as carbaminohemoglobin. d. as bicarbonate ions. e. as carbonic acid.
Cellular respiration
oxidizes glucose and reduces oxygen. oxidizes oxygen and reduces glucose. releases energy and reduces water. requires energy and releases NADH. releases energy and oxygen.