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Mr. Olson 6th Grade Science Chapter 3A
| Question | Answer |
|---|---|
| What is usually given to prevent a person from contracting a disease? | vaccine |
| What is a one-celled organism that does not have a nucleus? | moneran |
| What monerans can carry out photosynthesis? | blue-green bacteria |
| What are medicanes that can stop the growth and reproduction of bacteria? | antibiotics |
| The dependency that two organisms nave on each other for survival is called _________. | symbiosis |
| In a communicable disease, what passes from one host to another? | disease-causing organisms |
| Chemical poisons produced by bacteria are called ________. | toxins |
| The body's main line of defense against infection are the white blood cells of the _________. | immune system |
| What is the process by which monerans reprodue by splitting into idential cells? | fission |
| What are proteins produced by white blood cells that can attach to bacteria and viruses and destroy them? | antibodies |
| What cannot obtain or use energy on their own? | viruses |
| What feed on dead organic matter and on living things? | bacteria |
| What causes colds, AIDS, and measles? | virsues |
| What causes cholera, tetanus, and whooping cough? | bacteria |
| What reproduce through fission? | bacteria |
| What can reproduce only within a cell of a host organism? | viruses |
| What are made of genetic material wrapped inside a capsule of protein? | viruses |
| What have cell walls but don't have a nucleus? | bacteria |
| What are divided into three groups according to shape? | bacteria |