Answer:
The first layer is the crust, a skin of rock covering the planet. The core that Lehman had found was the Earth's inner core. The core that Richard Oldem had discovered turned out to be the Earth's outer core.
Explanation:
Answer:
The polarity of membrane phospholipids
Explanation:
The inner core of membranes is made of nonpolar tails of phospholipids which in turn makes the membranes impermeable for polar, large and charged substances since these substances cannot cross the non-polar inner core. The saturated hydrocarbon tails pack tightly and make membrane less permeable while cholesterol affects the membrane permeability by interacting with non-polar tails.
Higher temperatures make the membrane more fluid and more permeable while at lower temperatures, membranes are more rigid due to tight packing of hydrocarbon tails and less permeable. The polar heads of phospholipids make the inner and outer surface of the membrane. Therefore, the polarity of phospholipids does not affect the membrane permeability.
Answer:
<h2>Striated, smooth, and cardiac muscle cells contain vast numbers of cytoplasmic filaments that function during the contraction of these cells. ... The contraction of striated muscle cells shortens the muscle, which then moves the skeleton.</h2>
Answer:
B
Explanation:
In fact, mRNA's bases are directly copied from DNA. However mRNA's bases are complimentary to DNA's .!
