Amoebas have a nucleus and food vacuole. They reproduce by dividing into two new cells.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
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Bacterial cells are smaller than plant or animal cells.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
Ciliates, such as this paramecium, use cilia to propel themselves through water.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
Euglena are single-celled, plant-like protists that can make food from the sun's energy. They can also act as heterotrophs and obtain food from the environment in the absence of sun.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
Flagellates are a group of protozoans that move through water by waving a whip-like flagellum back and forth.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
Monerans are microorganisms that consist of a single small cell.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
There are three main shapes of monerans: cocci (spherical), bacilli (rod-shaped), and spirilla (spiral-shaped).
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
Bacterial cells are referred to as prokaryotes. Prokaryotic cells do not contain a nucleus or other internal structures common in plant or animal cells.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
Areas near the equator receive the sun's rays more directly throughout the year, resulting in an overall warmer climate.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
Latitude is the measure of distance north or south of the equator. The equator has a latitude of 0 degrees, and the north and south poles have latitudes of 90 degrees.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
Areas near the north pole receive the sun's rays indirectly, causing them to be cooler than areas near the equator.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
There are millions of carbon compounds, ranging from simple compounds containing two atoms to more complex compounds involving thousands of atoms.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
Hydrocarbons are organic compounds that contain only hydrogen and carbon atoms.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
A compound containing carbon is often referred to as an organic compound.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
Saturated hydrocarbons, such as propane and methane, contain carbon atoms connected by a single covalent bond.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
Unsaturated hydrocarbons form long chains consisting of at least one double or triple covalent bond.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
A pH scale is used to measure the pH of a substance. Ranging from 1-14, 7 represents a neutral point. Anything below 7 is considered an acid and anything above 7 is considered a base.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
Alternating current reverses or alternates direction in a pattern.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
In direct current, the current flows in one direction through a wire.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010
A current consists of flowing electrons, which are commonly conducted in a wire, such as the wire of this lamp.
- Subject:
- Science
- Provider:
- Utah Education Network
- Author:
- Visual Learning Company
- Date Added:
- 02/28/2010