Biology: Infectious disease 3 Assignment

Which of the following pathogens causes mad cow disease?

A Prion

Which of the following is still necessary to eradicate cholera?

intergovernmental cooperation Submit

A degenerative brain disorder transmitted by cannibalism is called ________.

kuru

The ______is a viral life cycle that results in bursting of the host cell.

lytic cycle

Some viral diseases are dangerous only when a person is infected for the first time; subsequent infections produce only mild symptoms or go entirely unnoticed. This pattern can be explained by the action of _____.

memory cells that trigger a secondary immune response

Viruses are

not alive because they are not made of cells and require a host cell for reproduction.

a__is a small circular molecule of DNA that reproduces independently of the larger bacterial chromosome.

plasmid

You are a doctor working in Cambodia. A patient presents with cholera. Which of the following would likely be best for you to do first?

rehydrate

Which of these sub-cellular structures is found in both eukaryotes and prokaryotes? See Section 3.1 (Page) .

ribosomes

Antibodies are _____.

specialized proteins that attach to pathogens and disable them or mark them for destruction by immune cells Submit

Assuming COVID-19 is like cholera, which of the following will be the largest factor motivating those in charge to get it under control?

the economy

Following an injury to your hand, the injured area appears red and swollen. It feels painful and warm to the touch. What is the cause of these symptoms? See Section 11.12 (Page) .

the inflammatory response

Following an injury to your hand, the injured area appears red and swollen. It feels painful and warm to the touch. What is the cause of these symptoms?

the inflammatory system

The process of___involves the transfer of DNA from one bacterium to another by a virus.

transduction

The process of ____occurs when a bacterium internalized bits of DNA from its environment.

transformation

Binary fission produces __________.

two genetically identical bacterial cells

2. Although generally not considered to be alive, a _____, is studied alongside other microbes such as bacteria.

virus

Most bacteria (and many other single-celled organisms) reproduce via _____, the process of dividing a cell in half, yielding two genetically identical offspring cells.

Binary Fission

By what means do prokaryotes typically divide?

Binary fission

1. The protein coat that surrounds the nucleic acid of a virus is called a ____

Capsid

What is the most common STD that is caused by bacteria?

Chlamydia

Why is cholera much more prevalent in the developing world?

Contaminated water is more common in the developing world.

___defenses are always at the ready and are the same whether a particular infectious agent has been encountered before or not.

External

Patients with advanced AIDS often die from infections that do little harm to healthy people. Why?

HIV infects and destroys the helper T cells of the immune system.

The___system is a collection of cells and organs that protect an organism's body from agents that can cause disease.

Immune

The_____is a viral life cycle in which the virus inserts its genome into the genome of its host, where it may remain dormant for long periods.

Lysogenic cycle

How do vaccines convey long-term immunity to some pathogens?

Memory Cells

The ____is an agent in the environment that has the potential to cause disease.

Pathogen

___describes the process of engulfing and destroying a foreign particle.

Phagocytosis

A____is a viral genome that has inserted itself into the genome of its host.

Prophage

Which of these sub-cellular structures is found in both eukaryotes and prokaryotes?

Ribosomes

A virus enters your system and successfully invades and infects a cell. At this point it is vulnerable to recognition or attack by _____.

T Cells

There are many organs and glands of the endocrine system, but which one is the master controller?

The hypothalamus

Which of the following statements about viruses is FALSE?

The widespread use of antibiotics has led to resistant strains of viruses.

Which medication prevents viral infections by priming the immune system against a specific virus?

Vaccine

Which of the following can be found in bacteria, but not viruses?

a cell membrane Submit

Suppose you were in charge of sending an unmanned space probe to a new planet in search of life. The probe would be able to collect and test samples and make observations, but the planet is too far away for the probe to be able to bring samples back to Earth. The probe is small and would only be able to run a few tests, so you want to pick a test for evidence of life that is broad enough to incorporate all forms of life as we know it. Which one of the following tests would be the best to use in this situation?

a test for the presence of cells that contain DNA Submit

Homeostasis is a living organism's

ability to maintain constant internal conditions even when environmental conditions change.

The___system is a set of proteins that circulate in the blood, stimulating other defenses to help destroy an invader.

complement

The process _____ involves the building of a physical bridge between two bacteria. DNA then moves across this bridge from a donor cell to a recipient cell.

conjugation

Which of the following is NOT a characteristic of living things?

creating energy Submit

___describes a set of defenses that is customized to each infectious agent, providing a stronger response when an agent has been encountered before.

Adaptive Community

What is the condition called when your body's immune system overreacts to an otherwise harmless foreign particle?

Allergy

Which of the following is true regarding cholera and COVID-19?

At the time of this article, both are in a state of pandemic.

In the immune response, the end goal is to disable or kill pathogens that invade the body. But first, antibody proteins or proteins in immune cell membranes must recognize and bind to invaders. This is a challenge, given the vast diversity of pathogensthat can infect us. To meet this challenge, immune proteins _____.

are diverse: each immune protein can bind to only one or a few pathogens, but immune proteins are tremendously diverse, so the system is likely to possess a "match" to nearly any pathogen

is a virus that specifically infects bacteria.

bacteriophage

When a B cell binds to a virus or other pathogen, it _____.

becomes activated, divides rapidly, and thereby mounts a specialized response against the pathogen. Submit