The Price of Train Travel Increases by 10% and the Demand

question 25

Multiple Choice

The price of train travel increases by 10% and the demand for train travel falls by 12.5%. The price elasticity of demand for train travel is:

• A) 1.25
• B) 0.50
• C) 0.75
• D) 1.00

Understand the sequence of human developmental events and their timing.

Understand the concept of genetic inheritance and variability in twins.

Explain cell signaling events in early embryonic development.

Identify different types of embryonic cell movements and their functions.

---

Definitions:

Keratinocyte

The predominant cell type in the outer layer of the skin, responsible for the production of keratin.

Epidermis

The outermost layer of skin, serving as a barrier against environmental damage and pathogens.

Sweat Gland

A gland that produces sweat, found in the skin of mammals, which helps in thermoregulation and excretion.

Sebaceous Gland

A small gland in the skin which secretes a lubricating oily matter (sebum) into the hair follicles to lubricate the skin and hair.