Unit 6 Infectious Agents

Which of the following best describes bacteria?

A student sets up a compost bin outdoors. Inside the bin, microorganisms convert the student's vegetable and paper scraps into rich fertilizer. Which of the following best describes the role that these microorganisms play in natural habitats?

A photograph of a virus is shown below. The projections on the surface of the virus allow the virus to:

Cold sores are caused by herpes simplex type 1. A company that wants to develop antiviral drugs would need to research:

Fungi are not considered plants because they:

Fungi grow best in:

Most of the genetic material contained in a bacterial cell is in the:

The thick gelatin capsule along with the slime layer that encases a bacterial cell help it to:

Which of the following is NOT a structural feature of bacteria?

Most bacteria obtain their food by:

Strep Throat, Anthrax, and Tetanus are examples of disease-causing bacteria called:

A bacterial toxin found in food is called:

An active virus does which of the following?

Some yogurt companies in the United States have started using probiotics in their yogurt products in order to promote digestive health. Probiotics are single-celled organisms that live in the intestines and aid in the reduction of gas, cramping, and diarrhea. Which microbe represents a probiotic?

One of the benefits derived from bacteria which live in the digestive system is:

Which of the following organelle(s) do viruses lack?

Which of the following is NOT a structural feature of bacteria?

What organisms are responsible for creating holes in Swiss Cheese and giving yogurt its taste and texture?

Medicine, enzymes, and cleansers are made from manufactured ____.

Which of the following is NOT an internal parasite?

One main difference between a bacteria and a virus is that:

How does a virus use a host cell to replicate itself?

Bioremediation is using microbes to clean up or remove toxins from the environment. Which description is an example of bioremediation?

Some bacteria assist in the production of ___, which limit the growth of bacteria.

Schistosomiasis is a disease that occurs when eggs of small flatworms hatch inside the body. The worms can grow in many different tissues. How could schistosomiasis in the intestines interfere with normal body functions?

Using the table, which diseases would spread more rapidly in a densely populated area?

Hand sanitizers with antibacterial agents are marketed as a way to prevent the spread of disease through hand contact. Is this a perfect solution to the problem?

A certain virus causes people to catch colds and other infections more easily. Which body system does the virus affect?

A cold sore is an example of a latent virus because:

Some bacteria are mixed with milk to make yogurt. These bacteria change the lactose in the milk into glucose, which then ferments into lactic acid. The lactic acid causes a protein in the milk to stick together, creating the gelatinous yogurt. The following graph shows the relative lactic acid production of different bacteria. Which of these is a logical conclusion based on the data?

Scientists discovered that some bacteria can be used to clean up oil spills. The following graph shows the results of a study where the oil-cleaning abilities of two groups of bacteria were compared. Which conclusion can be made from these data?

Sean is allergic to mold. Which of these describes how mold affects him?

An example of a viral infection is:

A student has the following symptoms of a cold: coughing, sneezing, headache, and sore throat. Which describes how the student contracted this cold?

How do viruses move from place to place?

Study the table showing symptoms of four diseases affecting humans. Which statement about the diseases is true?

Which of the following represents the relationship between a parasitic worm and its host?

H. pylori is a bacterium that damages the mucous coating in the lining of the stomach and duodenum. A study compared the presence of H. pylori with the incidence of stomach ulcers in humans. The table shows the results of six groups of people who participated in the study. What is the MOST logical conclusion that can be made?

Probiotics are bacteria that provide health benefits to humans when consumed. A researcher is studying the use of probiotic therapy in treating patients with diarrhea. She observed that probiotic bacteria treatment shortens the duration of diarrhea in children. What can be inferred from the researcher's work?