In general, lipids are water insoluble.
Answer the following statement true (T) or false (F)
True
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The ventral part of the medulla oblongata near the origin of the vagus nerve is the location of
A. peripheral chemoreceptors. B. central chemoreceptors. C. mechanoreceptors. D. baroreceptors.
Arrange the following events in protein secretion in the proper sequence.
1. The polypeptide chain enters the lumen of the endoplasmic reticulum. 2. A secretory vesicle is formed. 3. A transport vesicle is formed. 4. The polypeptide chain enters the lumen of the Golgi complex. A) 3, 1, 4, 2 B) 1, 3, 4, 2 C) 1, 3, 2, 4 D) 1, 2, 3, 4 E) 4, 3, 1, 2
Identify the following
More than one sperm is prevented from fertilizing an egg by all of the following mechanisms except:
A. Opening sodium channels in the plasma membrane causes a change in the electrical charge of the membrane. B. Secretion of material from cortical granules pushes sperm away from the already fertilized egg. C. A slow block to polyspermy occurs. D. Meiosis II is completed by the egg. E. A fast block to polyspermy occurs.