1. Nerve cells have branched connections at each end. These join to other nerve cells, allowing them to pass messages around the body.

2. Photosynthesis takes place in chloroplasts; cell walls allow plants to have strong, upright structures; and vacuoles help regulate how cells handle water and storage of other molecules.

3. Cell differentiation is caused by changes in gene expression. This occurs when different signaling molecules in the environment activate or repress different transcription factors that are necessary to express certain genes in the DNA.

4. Tissue is made when specialised cells with the same function group together. For example, millions of muscle cells make up muscle tissue.

5. These mistakes can underlie disorders such as cystic fibrosis, muscular dystrophy, infertility, and some cancers.

6. Red blood cells are adapted for the transport of oxygen. They are small and flexible so they can fit through narrow vessels, have a bi-concave shape which maximises their surface area to absorb oxygen, have a thin membrane so gases easily diffuse through, and contain haemoglobin which binds to oxygen.

That probably the most nicest thing said to me.

1. Ciliated cells, root hair cell, palisade mesophyll cell, nerve cell, sperm, egg cell, red blood cells.

2. It is responsible for managing the metabolism of neurons as much as possible. In simple words, it is responsible for the healthy metabolism of a neuron.

3. A neuron typically has one axon that connects it with other neurons or with muscle or gland cells.

4. , the structure in a cell that contains the chromosomes. The nucleus has a membrane around it, and is where RNA is made from the DNA in the chromosomes. Enlarge. Parts of a cell.