Prior to the union of the nuclei of the egg and sperm, meiosis II is completed by the ovum
Indicate whether the statement is true or false
TRUE
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Mixed venous blood samples can be taken from which of the following blood vessels?
A) pulmonary vein B) inferior vena cava C) pulmonary artery D) aorta E) superior vena cava
Which one of the following statements CORRECTLY describes the architecture of a plasma membrane?
A) Proteins line the internal, cytoplasmic surface, and phospholipids cover the external surface. B) Proteins, phospholipids, and cholesterol are joined by strong covalent bonds that give the membrane strength. C) Phospholipids line the internal cytoplasmic surface, and proteins cover the external surface, sandwiching cholesterol in the middle. D) Proteins and cholesterol are embedded in the phospholipid bilayer, forming a fluid mosaic.
In DNA,
a. G pairs with T and A pairs with C. b. G pairs with A and C pairs with T. c. G pairs with C and A pairs with T. d. G pairs with C and U pairs with A.
Which of these events leads to all of the others in a pyrogenic (fever) response?
A) The hypothalamus releases prostaglandins. B) Endotoxin is released from the cell wall of gram-negative bacteria. C) The body's thermostat is set to a higher level, and fever occurs. D) IL-1 is released by macrophages. E) IL-1 travels via the blood to the hypothalamus.