Homeostasis and Cell Transport

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms regulate their internal environment to maintain stable, constant conditions despite external changes.

Front

What is thermoregulation?

Back

Thermoregulation is a specific type of homeostasis that involves maintaining an internal body temperature within a certain range.

Front

What type of feedback mechanism is primarily used in homeostasis?

Back

Negative feedback is primarily used in homeostasis to counteract changes and maintain stability.

Front

What is phagocytosis?

Back

Phagocytosis is a type of active transport where a cell engulfs large particles or other cells, forming a food vacuole.

Front

What is the fluid mosaic model?

Back

The fluid mosaic model describes the structure of the plasma membrane as a flexible layer of phospholipids with proteins embedded that can move laterally.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water enters the cell, causing it to swell and potentially burst.

Front

What is osmosis?

Back

Osmosis is the passive movement of water molecules across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What role do Na⁺ and K⁺ ions play in cell transport?

Back

Na⁺ and K⁺ ions are crucial for creating chemical and electrical gradients across the cell membrane, which are essential for various transport processes.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a passive transport process that uses specific proteins to help move substances across the cell membrane without energy.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy (ATP).