Answer:
Because they are hydrophilic
Explanation:
The cell membrane is made up of a phospholipid bilayer. The phospholipid bilayer is made up of an arrangement of phosphate heads, which are (attracted to water) hydrophilic, and fatty acid tails, which are hydrophobic. (repelled by water).
Because they are attracted to water, the phosphate heads face the outside of the cell, where the water is
<span>Antibodies. A. k.a. immunoglobulins. They are produced by a group of white blood cells called B lymphocytes (or B cells). There are 5 classes of immunoglobulins; IgM,IgA,IgE,IgG and IgD.The classes of antibody diifferent both in their constant region and in their activity.IgG, the most common antibody, and is found mostly in the blood and tissue fluids, and IgA is localized in the mucous membranes which line the respiratory and gastrointestinal tracts.</span>
Answer:
<h2>
Liver
</h2>
Explanation:
1. Glucagon: it control the glucose levels in the blood.
2. Glucagon is produced by the alpha cells, in the pancreas.
3. It prevent dropping of blood glucose levels too low. so, it acts on the liver in many ways:
4. It stimulates the breakdown of glycogen which is stored in the liver into glucose, which finally released into the bloodstream, this process is known as glycogenolysis.
5. It also stimulates the production of glucose from amino acid molecules and some other non carbohydrate pre-cursors, by the process known as gluconeogenesis.
Correct Answer: Ratio
Determining a person’s reaction time would involve measurement on a
ratio scale that is expressed in milliseconds. It is a point where none of the quality being measured
exists and its scale has an absolute zero. In ratio scale, it allows comparisons
such as being twice as high or one-half as much. Additionally, in the case of a
person’s reaction time, it can be state that a response of 25 milliseconds is
twice as fast as a response time of 50 milliseconds.
