Explanation

• Arachidonic acid is converted into three different types of signaling molecules, including prostaglandins, thromboxanes and leukotrienes, all of which are classified as eicosanoids.
• Arachidonic acid is a 20-carbon fatty acid with four carbon-carbon double bonds.

Explanation

Hyper-V employs para-virtualization, where the guest operating system is aware of the virtualization and can communicate with the hypervisor for optimized performance.

Explanation

Amines are of three types, primary, secondary and tertiory.

1. Primary amines are those which directlr attached to one carbon as CH3NH2 or RNH2.
2. Secondary amines are those which attached to two more carbon atoms as C2H5 − NH − C2H5 or R2NH
3. Tertiory amines all valency of nitrogen are satisfied by alkyl groupe R3N.

Explanation

• The administrative distance of OSPF is 110.
• Administrative distance (AD) or route preference is a number assigned to dynamic routes, static routes and directly-connected routes.
• The value is used in routers to rank routes from most preferred (low AD value) to least preferred (high AD value).

Explanation

The given set is a set of sets, also known as a collection of sets. It contains two elements:

1. {1, 2, 3} (a set of three elements)
2. {4, 5} (a set of two elements)

Explanation

• 6^P4 can be expanded as: 6 × 5 × 4 × 3 = 360
• This is a calculation of the factorial of 6, denoted by 6! (6 factorial), but since the question uses the notation 6^P4, it's likely using the notation for permutations, where 6^P4 represents the number of ways to arrange 4 items from a set of 6.

Explanation

• When light enters from a vacuum into glass, its velocity decreases.
• This is because light travels at a speed of approximately 299,792,458 meters per second (m/s) in a vacuum, but it travels at a slower speed in a medium with a higher refractive index, such as glass.

Explanation

• Since the table is round, there is no fixed position or "head" of the table, and therefore, the arrangements are considered to be circular permutations.
• The formula for circular permutations is (n-1)! where n is the number of persons.
• In this case, n = 5, so: (5-1)! = 4! = 24

Explanation

• The condition caused by a deficiency of niacin is called pellagra.
• Pellagra is a systemic disease that affects the skin, mouth, bowels and brain.
• The condition is usually caused by a poor diet, but it can also be caused by other health conditions that prevent the body from absorbing or using niacin.

Explanation

• The idiomatic phrase "not turn a hair" means to remain completely calm and unflappable, even in the face of danger or adversity.
• It describes someone who is fearless, courageous, and unafraid to take risks.