Quiz Viruses
True/False
Indicate whether the sentence or statement is true ' + 'or false.
'; instructionText[1] = '
Completion
Complete each sentence or ' + 'statement.
'; instructionIndex[0] = 0; instructionIndex[1] = 9; numberText[0] = '1.'; questionText[0] = '
Although viruses do not consist of cells, biologists consider them to be living because ' + 'they are capable of reproduction.
'; answerText[0] = '
F
'; numberText[1] = '2.'; questionText[1] = '
Wendell Stanley made the important discovery that viruses are not ' + 'cellular.
'; answerText[1] = '
T
'; numberText[2] = '3.'; questionText[2] = '
Viruses consist of RNA or DNA surrounded by a coat of protein.
'; answerText[2] = '
T
'; numberText[3] = '4.'; questionText[3] = '
Prions are ' + 'the smallest known particles that are able to replicate.
'; answerText[3] = '
F
'; numberText[4] = '5.'; questionText[4] = '
A virus can ' + 'only reproduce by controlling a cell.
'; answerText[4] = '
T
'; numberText[5] = '6.'; questionText[5] = '
People can ' + 'contract the influenza virus more than once because the virus tends to mutate rapidly, avoiding the ' + 'actions of the immune system.
'; answerText[5] = '
T
'; numberText[6] = '7.'; questionText[6] = '
Smallpox is caused by bacteria.
'; answerText[6] = '
F
'; numberText[7] = '8.'; questionText[7] = '
Chickenpox and shingles are caused by the same virus.
'; answerText[7] = '
T
'; numberText[8] = '9.'; questionText[8] = '
The viruses ' + 'that have been linked to human cancers are usually transmitted through the air.
'; answerText[8] = '
F
'; numberText[9] = '10.'; questionText[9] = '
The protein ' + 'coat of a virus is called a(n) ____________________.
'; answerText[9] = '
capsid
'; numberText[10] = '11.'; questionText[10] = '
Most viruses ' + 'occur in the shape of a(n) ____________________ or a(n) ____________________.
'; answerText[10] = '
icosahedron; helix
'; numberText[11] = '12.'; questionText[11] = '
A virus that ' + 'transcribes DNA from an RNA template is called a(n) ____________________.
'; answerText[11] = '
retrovirus
'; numberText[12] = '13.'; questionText[12] = '
An enzyme called ' + '____________________ manufactures DNA that is complementary to a virus’s RNA.
'; answerText[12] = '
reverse transcriptase
'; numberText[13] = '14.'; questionText[13] = '
____________________ are bacterial viruses with a polyhedral head and a helical ' + 'tail.
'; answerText[13] = '
Bacteriophages
'; numberText[14] = '15.'; questionText[14] = '
All viruses ' + 'reproduce by taking over the reproductive machinery of a ____________________.
'; answerText[14] = '
cell
'; numberText[15] = '16.'; questionText[15] = '
Viruses that infect a host cell and have their nucleic acid replicated but do not harm ' + 'the host cell are in a ____________________ cycle.
'; answerText[15] = '
lysogenic
'; numberText[16] = '17.'; questionText[16] = '
A viral DNA ' + 'molecule formed from an RNA virus is called a(n) ____________________.
'; answerText[16] = '
provirus
'; numberText[17] = '18.'; questionText[17] = '
The virus that ' + 'causes AIDS is called ____________________.
'; answerText[17] = '
human immunodeficiency virus or HIV
'; numberText[18] = '19.'; questionText[18] = '
Some viruses ' + 'are thought to induce ____________________, a disease characterized by uncontrolled cell ' + 'division.
'; answerText[18] = '
cancer
'; numberText[19] = '20.'; questionText[19] = '
An example ' + 'of an emerging virus is the ____________________ virus.
'; answerText[19] = '
Ebola
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| Name: Viruses |
| True/False Indicate whether the sentence or statement is true or false. | ||
| 1. | Although viruses do not consist of cells, biologists consider them to be living because they are capable of reproduction. | |
| 2. | Wendell Stanley made the important discovery that viruses are not cellular. | |
| 3. | Viruses consist of RNA or DNA surrounded by a coat of protein. | |
| 4. | Prions are the smallest known particles that are able to replicate. | |
| 5. | A virus can only reproduce by controlling a cell. | |
| 6. | People can contract the influenza virus more than once because the virus tends to mutate rapidly, avoiding the actions of the immune system. | |
| 7. | Smallpox is caused by bacteria. | |
| 8. | Chickenpox and shingles are caused by the same virus. | |
| 9. | The viruses that have been linked to human cancers are usually transmitted through the air. | |
| Completion Complete each sentence or statement. | ||
| 10. | The protein coat of a virus is called a(n) ____________________. | |
| 11. | Most viruses occur in the shape of a(n) ____________________ or a(n) ____________________. | |
| 12. | A virus that transcribes DNA from an RNA template is called a(n) ____________________. | |
| 13. | An enzyme called ____________________ manufactures DNA that is complementary to a virus’s RNA. | |
| 14. | ____________________ are bacterial viruses with a polyhedral head and a helical tail. | |
| 15. | All viruses reproduce by taking over the reproductive machinery of a ____________________. | |
| 16. | Viruses that infect a host cell and have their nucleic acid replicated but do not harm the host cell are in a ____________________ cycle. | |
| 17. | A viral DNA molecule formed from an RNA virus is called a(n) ____________________. | |
| 18. | The virus that causes AIDS is called ____________________. | |
| 19. | Some viruses are thought to induce ____________________, a disease characterized by uncontrolled cell division. | |
| 20. | An example of an emerging virus is the ____________________ virus. | |
  | |