Cell Specialisation (1.1.3)

<p>Long axon (B)</p> Signup and view all the answers

<p>Specialized to contract quickly (D)</p> Signup and view all the answers

<p>They retain the ability to differentiate throughout life. (A)</p> Signup and view all the answers

<p>Supply energy for contraction (C)</p> Signup and view all the answers

<p>Nerve cells (A)</p> Signup and view all the answers

<p>Stem cells (A)</p> Signup and view all the answers

<p>They slide over each other to facilitate contraction. (C)</p> Signup and view all the answers

<p>A large surface area due to root hairs (A)</p> Signup and view all the answers

<p>To transport water and mineral ions (C)</p> Signup and view all the answers

<p>By respiration in mitochondria (A)</p> Signup and view all the answers

<p>Spirals of lignin (D)</p> Signup and view all the answers

<p>To assist in water movement into the cell (D)</p> Signup and view all the answers

<p>Differentiation (C)</p> Signup and view all the answers

Cells change and develop specialized structures to fulfill specific roles or functions in an organism.

Cells that retain the ability to differentiate into various cell types throughout their life.

The process by which a cell changes to become specialized, gaining new sub-cellular structures for its specific role.

Muscle cells contain specialized proteins, myosin and actin, that slide over each other to cause contraction and movement.

Muscle cells have a high concentration of mitochondria to provide energy for contraction through respiration.

Root hair cells have a large surface area due to root hairs, allowing efficient absorption of water by osmosis and mineral ions by active transport from the soil.

Xylem cells are specialized for water and mineral ion transport from the roots to the shoots, forming a continuous tube due to lignin deposition and cell death.

Lignin, a chemical deposited in xylem cells, strengthens them and allows them to withstand the pressure of water movement.

A process where cells develop specialized structures and functions, becoming suited for a specific role in the body.

The streamlined head of a sperm cell containing digestive enzymes that break down the egg's outer layers.

Cells that transmit electrical signals quickly throughout the body.

The long extension of a nerve cell that carries the electrical impulse along distances.

Short, branched extensions of a nerve cell that receive signals from other neurons.

Special chemicals released at the nerve endings to transmit the impulse to the next cell.