The image shows that the cell membrane consists of a double layer of lipid molecules. Its primary role is to regulate the movement of substances into and out of the cell, helping the cell maintain a stable internal environment.

Which biomolecule makes up the majority of the cell membrane?

Disinfectants are chemicals used to kill harmful microorganisms on surfaces. Some disinfectants work by breaking down the cell membrane of bacteria.

What effect would destroying the cell membrane of a bacterium have?

Some students used information they gathered from lab investigations to prepare a table. They entered the table in their lab notebooks.

Which of these correctly identifies the two cells described in the table above?

Using the structures shown in the table, identify the four pathogens being described.

(Make sure to scroll over to get to the Virus option)

Water is the most abundant molecule inside of a cell, however too much water entering a cell can cause the cell to burst (pop).

Which cell organelle is responsible for maintaining homeostasis by controlling how molecules, such as water, enter and leave the cell?

A researcher is comparing the DNA in prokaryotic and eukaryotic cells. Which statement accurately describes the difference?

Steven finished with his Tiger Tutorials and heads to the cafeteria for his lunch. Once he eats, his body will digest his quick carbohydrates!

Which organelle will help Steven produce energy?

Two students were observing an organism under a microscope and he noticed that it had the following characteristics:

• Cytoplasm

• DNA protected by a nucleus

• Ribosomes

• Cell Wall

• Large Central Vacuole

• Mitochondria

Student A claims that the organism is a plant cell, and Student B claims that the organism is an animal cell.

Which student is correct AND why? (2 points)

Think about this information carefully, and enter your response in the space provided below.

Below is a picture of SARS-CoV-2, the virus that causes COVID-19.

Match each structure to its name.

Below is a picture of SARS-CoV-2, the virus that causes COVID-19.

Match each structure with its function (job).

Avian influenza is a highly infectious virus that affects birds. Between April and July of 2024, the United States Department of Agriculture (USDA) and the Food and Drug Administration (FDA) reported a total of 18.37 million bird deaths and 0 human deaths.

Which of the following best explains why avian influenza affects birds but not humans?

Pathogens such as bacteria and viruses have extensions as shown in the diagrams below.

In bacterial cells, these extensions are used for motion. What are the extensions from a pathogenic virus used for?

A typical virus consists of glycoproteins on the outside (keys) that match receptor proteins (locks) on host cells.

The role of these glycoproteins is to…

What does a virus need from the host cell in order to reproduce?

Select TWO correct answers.

Which of the following best describes what happens once a virus enters the host cell?

Which statement is true of both viruses and cells?

A student is making a Venn diagram comparing eukaryotic cells, prokaryotic cells, and viruses

What will be in the middle of the venn diagram?

Four students responded to a question regarding characteristics of viruses. Their responses were recorded in the table below.

Based on their responses, which student correctly describes the characteristics of viruses?

Which of the following best explains why plants can be affected by TMV while humans are unaffected?