Cells and Viruses STAAR Review

A student groups different types of cells as shown.

Which table headings should the student use for the two groups?

• 1. Animal cells

  2. Plant cells

• 1. Prokaryotic cells

  2. Eukaryotic cells

• 1. Mobile cells

  2. Motile cells

• 1. Fungal cells

  2. Bacterial cells

Tags

NGSS.MS-LS1-1

Materials are provided to students to build modes of a prokaryotic cell, a eukaryotic cell, and a virus. The material and the structures they represent are listed in the table shown. Which materials would be used in all three models?

• Yellow paper oval

• Gray paper hexagon

• Blue yarn

• Purple buttons

Tags

NGSS.MS-LS1-2

Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. Once a virus gains entry to the body, it invades a host cell in order to -

• deactivate the host cell's defenses

• synthesize antibodies for defense

• metabolize host proteins and grow

• access cellular process for replication

Students use a microscope to look for structures present in four different cells. The students placed an X for each structure that was viewed for each cell on the table shown.

Which cell that was viewed is most likely a prokaryote?

• Cell W

• Cell X

• Cell Y

• Cell Z

Tags

NGSS.MS-LS1-1

Severe acute respiratory syndrome (SARS) is an illness caused by a coronavirus. Symptoms including a high fever, headaches, and body aches typically occur two to seven days after infection by the virus. SARS is more serious in elderly patients. This information suggests that the reproductive cycle of the SARS virus is -

• lysogenic, because the virus is a coronavisus

• lytic, because the virus causes respiratory illness

• lysogenic, because the virus primarily affects older people

• lytic, because of the quick onset of symptoms after infection

A table comparing the characteristics of four samples is shown.

Which sample most likely contains viruses?

• Sample 1

• Sample 2

• Sample 3

• Sample 4