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 |