Answer:
The answer to the question: Predict the effect of fatty acid saturation on the ease with which a membrane can be split by freeze fracturing, would be: just like high temperature and cholesterol presence will ensure the fluidity, or lack of it, of a plasma membrane, the presence of saturated and unsaturated fatty acids on the tail ends of phospholipids will increase the fluidity, or make it possible for the union between phospholipids to be broken up.
Thus, a phospholipid bilayer that is clustered with saturated fatty acids will shorten the distance between phospholipid molecules until they become like a rock wall and can be broken easily, because the tail ends tend to cluster together. This happens when temperature drops too low, especially under testing conditions like freezing them.
Under normal circumstances this will not happen because of cholesterol molecules and also because the presence of unsaturated fatty acids inside the lipid middle of the bilayer, where the tail ends are, prevent clustering of the tail ends and keep them moving.
The right option is; A. Compounds can be separated by physical methods.
Compounds can be separated by physical methods is the statement about compounds that is false.
A compound is a molecule that is formed from the combination of two or more different chemical elements. The atoms of the different elements that form a compound are held together by chemical bonds (covalent and ionic) that are not easy to break. The component of a compound can only be separated by chemical means and not by physical methods. An example of a compound is water (H2O) which is composed of hydrogen (H) and oxygen (O) atoms.
Answer:
This is INERTIA. Heavier objects (objects with more mass) are more difficult to move and stop. Heavier objects (greater mass) resist change more than lighter objects. Example: Pushing a bicycle or a Cadillac, or stopping them once moving.
Explanation:
Answer:
Involuntary respiration is controlled by the respiratory centers of the upper brainstem (sometimes termed the lower brain, along with the cerebellum). This region of the brain controls many involuntary and metabolic functions besides the respiratory system, including certain aspects of cardiovascular function and involuntary muscle movements (in the cerebellum).
Explanation:
The respiratory centers contain chemoreceptors that detect pH levels in the blood and send signals to the respiratory centers of the brain to adjust the ventilation rate to change acidity by increasing or decreasing the removal of carbon dioxide (since carbon dioxide is linked to higher levels of hydrogen ions in blood).
A.Energy,Water,Sunshine, Protection
