what are the main jobs of 1. sweat glands 2. epidermis 3. iris 4. sensory neuron 5. optic nerve 6. lens

Explanation:

1.regulates body temperature.

2.regulate fluid and protect the body from mechanical injury.

barrier that protects the body from ultraviolet (UV) radiation, harmful chemicals, and pathogens such as bacteria, viruses, and fungi.

3.responsible for regulating the amount of light that gets into the eye.

4.responsible for converting external stimuli from the environment into corresponding internal stimuli;send projections to other elements of the nervous system, ultimately conveying sensory information to the brain or spinal cord.

5.job of the optic nerve is to transfer visual information from the retina to the vision centers of the brain via electrical impulses.

6. lens focuses the light rays that pass through it in order to create clear images of objects that are positioned at various distances

q: compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city,

a:

comparing this to the inside of a food building/company.

all cells are surrounded by a plasma membrane, which protects the cell from its environment, keeping toxic substances out of the cell. it regulates which molecules are allowed to enter and exit the cell.

regulates all cell activity such as cellular metabolism, and growth in addition to storing and maintaining the cell's dna for transcription and replication. determines what proteins to make.

contains the organelles; site of most cell activity

the place where ribosomes do their working activity.

builds the proteins.

prepares proteins for use or export.

responsible for breaking down and absorbing materials taken in by the cell.

maintains cell shape.

transforms one form of energy into another.