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Gizmo Virus Lytic Cycle Student Exploration Sheet | Student Exploration: Virus Lytic Cycle (answered) Latest Summer (GRADED A) $10.99
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Gizmo Virus Lytic Cycle Student Exploration Sheet | Student Exploration: Virus Lytic Cycle (answered) Latest Summer (GRADED A)
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Gizmo Virus Lytic Cycle Student Exploration Sheet | Student Exploration: Virus Lytic Cycle (answered) Latest Summer (GRADED A)

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  • August 18, 2021
  • 7
  • 2021/2022
  • Exam (elaborations)
  • Questions & answers

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  • gizmo virus lytic cycle student exploration sheet

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Virus Lytic Cycle

Vocabulary: bacteriophage, capsid, host cell, lyse, lytic cycle, virus


Prior Knowledge Questions (Do these BEFORE using the Gizmo.)

1. A computer virus is a program that can copy itself and infect a computer without the
permission of the owner. How do you think a computer virus compares to a real virus?

A computer virus infects a computer, and a real virus infects an organism. During an
infection, both types of viruses make copies of themselves so that more infections can
occur. A computer virus often disrupts the functions of a computer, while a real virus
destroys its host cell.


2. Have you ever been infected with a virus, such as the cold virus or flu virus?

No, I’ve never been infected with any virus.


3. If so, how did the virus affect you?

Never been infected with a virus.


Gizmo Warm-up
A virus is a microscopic particle that can infect a cell.
Viruses are primarily composed of a protein coat,
called a capsid, and nucleic acid. In the Virus Lytic
Cycle Gizmo™, you will learn how a virus infects a
cell and uses the cell to produce more viruses.

1. Viruses are extremely small. A typical virus is
about 100 times smaller than a single cell, such
as a bacterium. Label the virus and a bacterial
cell in the image at right.


2. Bacteriophages are
viruses that infect
bacteria. Based on the
diagram at left, label
the head, tail, tail fibers,
and the strand of
nucleic acid in the
image at right.




This study source was downloaded by 100000829957125 from CourseHero.com on 08 -18-2021 02:44:47 GMT -05:00


https://www.coursehero.com/file/15133913/Assignment-XII2-Lytic-Cycle-GIZMO/

, Activity A: Get the Gizmo ready:
• Lytic cycle If necessary, click Reset ( ).

Introduction: Unlike living organisms, viruses cannot reproduce on their own. Instead, viruses
infect host cells, taking over the cell’s machinery to produce more viruses. This process is
called the lytic cycle.

Question: What are the steps of the lytic cycle?

1. Observe: Use the navigation arrows on the DESCRIPTION tab to read about the stages of
the lytic cycle. Using your own words, summarize each step of the cycle.

Step Summary

A lytic bacteriophage virus attaches itself to a bacterial cell. The virus is a
1 very simple structure, composed of a protein capsid, nucleic acid, and a
tail section.


↓
The virus injects its nucleic acid into the cell. The nucleic acid uses the
2 cell’s ribosomes to make virus proteins. The proteins break up the cell’s
DNA.


↓
The virus capsid and tail, now useless, detach from the cell and
3 disintegrate. Inside the cell, the viral nucleic acid takes over and directs
the production of new virus proteins and nucleic acid.


↓
4 The virus proteins and nucleic acid assemble into new viruses.



↓
Special proteins produced by the viral nucleic acid cause the host
5 bacterial cell to lyse (burst), destroying the cell in the process. The
numerous new viruses are now free to infect other cells.


(Activity A continued on next page)



This study source was downloaded by 100000829957125 from CourseHero.com on 08 -18-2021 02:44:47 GMT -05:00


https://www.coursehero.com/file/15133913/Assignment-XII2-Lytic-Cycle-GIZMO/

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