Answer:
D. Type II alveolar cells
Explanation:
Three layers together make the diffusion membrane or respiratory membrane, which make the total thickness of less than a millimeter i.e. about 0.2 micrometer. The three layers are as follows:
1. The squamous epithelium of alveoli. There are two types of alveolar cells called type I and type II. Type I makes the exchange surface of alveolar membrane and type II cells are responsible for secreting the lung surfactant that reduces the surface tension.
2. Endothelial lining of blood capillaries. These is rich network of blood capillaries near the wall of alveoli.
3. In between the squamous epithelium and the endothelium of blood capillaries fused basement membrane is present.
a) Natural Selection
The moths that were lighter stood out on the dark bark, becoming easy targets for pray and eliminated light gene pools.
Answer:
The answer to your question is: Active transportation
Explanation:
Cell can move molecules in or out of it by two processes: Active or Passive transport.
Active transport: is the movement of molecules against a concentration gradient. Use proteins or enzymes to happen.
Passive transport: is the movement of molecules or ions from a higher concentration to a lower concentration.
Starches are known as polysaccharides. If we look at the word "polysaccharide" poly means "many" and saccharide means "sugar" so we can infer that a polysaccharide is a molecule composed of many sugars. We can also refer to starches as complex meaning that they are composed of simpler subunits. Those subunits are simple sugars (AKA monosaccharides) such as glucose, fructose, and galactose. When we hydrolyze a compound, we break it down into smaller components. Based on all of this information, hydrolyzed starches breaks it down into simple sugars such as glucose, fructose, etc. I hope the explanation is helpful.
