biology-Transport in cells

What Is active transport?

Active transport is a cellular process that moves molecules from an area of low concentration to an area of high concentration against the concentration gradient.

What is diffusion?

Diffusion is the passive process of movement of molecules from an area of high concentration to an area of low concentration, down the concentration gradient.

What factors affect the rate of diffusion?

Factors affecting diffusion rate include temperature, concentration gradient, particle size, and surface area.

what are substances used in diffusion?

Substances used in diffusion include gases like oxygen and carbon dioxide, as well as small molecules such as water and nutrients.

What are adaptations of diffusion?

Adaptations of diffusion include increased surface area in alveoli and plant roots, thin membranes for shorter diffusion distances, and maintaining steep concentration gradients through ventilation and circulation.

What is passive diffusion?

Passive diffusion is the movement of substances across a cell membrane without the need for energy input.

What is osmosis?

Osmosis is the special case of diffusion involving water molecules moving across a semipermeable membrane from an area of high water potential concentration to an area of low water potential concentration, down the water potential gradient.

What is osmosis in plant tissues?

Osmosis in plant tissues refers to the movement of water into or out of plant cells through a semipermeable membrane, affecting pressure and overall plant health.