You're body replaces blood cells every _______ days.

A group of organs or structures that work together to form a vital body function.

A group of diseases in which cells grow out of control.

The phase of mitosis that is characterized by the lining up of chromosomes along the equator of the cell.

What are the main two types of cells?

A ________ tumor is a mass of cells that interfere with the function of neighboring cells.

The type of cell produced immediately after fertilization occurs.

The type of tissue holds various types of cells together using fibers.

Long thin cells with branches which conduct electricity throughout the body.

_________ occurs when parts of a tumor break away and go to other parts of the body.

The average human is composed of around __________ individual cells .

What is the formula for cellular respiration?

This organelle directs the activities of the cell.

The _______ is the basic unit of life in all living things.

Hard structure made of cellulose that surrounds the cell.

This organ secretes a hormone called insulin directly into the bloodstream. What is its function?

These contain chlorophyll, which gives plants their green color and allows them to absorb light to be used to create sugar in the process of photosynthesis.

Respiratory system location where gas exchange occurs.

All cells need ________, water, and sugar, which must be transferred to and through the cell.