Erythrocytes Cell Membrane Lipids.

http://en.wikipedia.org/wiki/Red_blood_cell

The erythrocyte cell membrane comprises a typical lipid bilayer, similar to what can be found in virtually all human cells. Simply put, this lipid bilayer is composed of cholesterol and phospholipids in equal proportions by weight. The lipid composition is important as it defines many physical properties such as membrane permeability and fluidity. Additionally, the activity of many membrane proteins is regulated by interactions with lipids in the bilayer.

Unlike cholesterol, which is evenly distributed between the inner and outer leaflets, the 5 major phospholipids are asymmetrically disposed, as shown below:

Outer monolayer

• Phosphatidylcholine (PC);
• Sphingomyelin (SM).

Inner monolayer

• Phosphatidylethanolamine (PE);
• Phosphoinositol (PI) (small amounts).
• Phosphatidylserine (PS)

Call options have the following three Characteristics.

http://en.wikipedia.org/wiki/Call_option

All call options have the following three characteristics:

1 Strike price: this is the price at which you can buy the stock (if you have bought a call option) or the price at which you must sell your stock (if you have sold a call option).

2 Expiry date: this is the date on which the option expires, or becomes worthless, if the buyer doesn't exercise it.

3 Premium: this is the price you pay when you buy an option and the price you receive when you sell an option.

The initial transaction in this context (buying/selling a call option) is not the supplying of a physical or financial asset (the underlying instrument). Rather it is the granting of the right to buy the underlying asset, in exchange for a fee — the option price or premium.

Exact specifications may differ depending on option style. A European call option allows the holder to exercise the option (i.e., to buy) only on the option expiration date. An American call option allows exercise at any time during the life of the option.

Call options can be purchased on many financial instruments other than stock in a corporation. Options can be purchased on futures or interest rates, for example (see interest rate cap), and on commodities like gold or crude oil. A tradeable call option should not be confused with either Incentive stock options or with a warrant. An incentive stock option, the option to buy stock in a particular company, is a right granted by a corporation to a particular person (typically executives) to purchasetreasury stock. When an incentive stock option is exercised, new shares are issued. Incentive options are not traded on the open market. In contrast, when a call option is exercised, the underlying asset is transferred from one owner to another.

Example of a Call Option.

http://en.wikipedia.org/wiki/Call_option

For example, if a stock trades at $50 right now and you buy its call option with a $50 strike price, you have the right to purchase that stock for $50 regardless of the current stock price as long as it has not expired. Even if the stock rises to $100, you still have the right to buy that stock for $50 as long as the call option has not expired. Since the payoff of purchased call options increases as the stock price rises, buying call options is considered bullish. When the price of the underlying instrument surpasses the strike price, the option is said to be "in the money". On the other hand, If the stock falls to below $50, the buyer will never exercise the option, since he would have to pay $50 per share when he can buy the same stock for less. If this occurs, the option expires worthless and the option seller keeps the premium as profit. Since the payoff for sold, or written call options increases as the stock price falls, selling call options is considered bearish.

Call Option.

http://en.wikipedia.org/wiki/Call_option

A call option, often simply labeled a "call", is a financial contract between two parties, the buyer and the seller of this type of option.The buyer of the call option has the right, but not the obligation to buy an agreed quantity of a particular commodity or financial instrument (the underlying) from the seller of the option at a certain time (the expiration date) for a certain price (the strike price). The seller (or "writer") is obligated to sell the commodity or financial instrument to the buyer if the buyer so decides. The buyer pays a fee (called a premium) for this right.

When you buy a call option, you are buying the right to buy a stock at the strike price, regardless of the stock price in the future before the expiration date. Conversely, you can short or "write" the call option, giving the buyer the right to buy that stock from you anytime before the option expires. To compensate you for that risk taken, the buyer pays you a premium, also known as the price of the call. The seller of the call is said to have shorted the call option, and keeps the premium (the amount the buyer pays to buy the option) whether or not the buyer ever exercises the option.

Investing in 90/10 Strategy.

http://www.investopedia.com/terms/1/90-10-strategy.asp

Definition of '90/10 Strategy'

An investing strategy that involves deploying 90% of one's investment capital in interest-bearing instruments that have a lower degree of risk, and the balance 10% in high-risk investments. This is a relatively conservative investment strategy that aims to generate higher yields on the overall portfolio. Potential losses will typically be limited to the 10% that is invested in the high-risk investments, depending on the quality of bonds purchased.

Investopedia explains '90/10 Strategy'

A common application of the 90/10 strategy involves the use of short-term Treasury Bills for the fixed-income component (90% of the portfolio), with the balance 10% used for higher risk securities such as equity or index options or warrants.

For example, assume an investor with a $100,000 portfolio uses the 90/10 strategy. He or she invests $90,000 in one-year Treasury Bills that yield 4% per annum, with the balance $10,000 deployed in equity in the S&P 500. If the S&P 500 returns 10% at the end of one year, the overall return on the portfolio would be 4.6% (0.90 x 4% + 0.10 x 10%). However, if the S&P 500 declines by 10%, the overall return on the portfolio after one year would be 2.6% (0.90 x 4% + 0.10 x -10%). 

Atom.

http://en.wikipedia.org/wiki/Atom

The atom is a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons. The atomic nucleus contains a mix of positively charged protons and electrically neutral neutrons (except in the case of hydrogen-1, which is the only stable nuclide with no neutrons). The electrons of an atom are bound to the nucleus by the electromagnetic force. Likewise, a group of atoms can remain bound to each other by chemical bonds based on the same force, forming a molecule. An atom containing an equal number of protons and electrons is electrically neutral, otherwise it is positively or negatively charged and is known as an ion. An atom is classified according to the number of protons and neutrons in its nucleus: the number of protons determines the chemical element, and the number of neutrons determines the isotope of the element.

Membrane Composition.

http://en.wikipedia.org/wiki/Red_blood_cell

The membrane of the red blood cell plays many roles that aid in regulating their surface deformability, flexibility, adhesion to other cells and immune recognition. These functions are highly dependent on its composition, which defines its properties. The red blood cell membrane is composed of 3 layers: the glycocalyx on the exterior, which is rich in carbohydrates; the lipid bilayer which contains many transmembrane proteins, besides its lipidic main constituents; and the membrane skeleton, a structural network of proteins located on the inner surface of the lipid bilayer. Half of the membrane mass in human and most mammalian erythrocytes are proteins. The other half are lipids, namely phospholipids and cholesterol.