Answer:
I took the test the awnser is b
Explanation:
Answer:
b. secondary active transport by a symporter
Explanation:
Glucose is a monosaccharide, one of the digestion products of carbohydrates. Glucose is a polar molecule and can not diffuse through the hydrophobic core of the cell membrane of absorptive cells of the small intestine.
A symporter transports one glucose and two sodium ions from the cavity of the small intestine into the absorptive cells of the villi. Since both Na+ and glucose are transported in the same direction, it is a symport. Here, the energy of the ionic concentration gradient of Na+ serves as a source of energy for glucose transport, the process of glucose transport is secondary active transport.
The average person in the U.S. is exposed to a radiation level of .62 rem
Blue whale is the biggest animal in the world
Earths atmosphere is made up of a mixture of nitrogen (78%), oxygen (21%), and other gases (1%). There are 5 layers to the Earths atmosphere: Exosphere: 700 to 10,000 km, Thermosphere: 80 to 700 km, Mesosphere: 50 to 80 km, Stratosphere: 12 to 50 km, Troposphere: 0 to 12 km.The atmosphere becomes thinner until it gradually reaches space.