The final step in the viral replication cycle (the lytic cycle) not shown in the diagrams is

the destruction of the host cell by lysing the cell and releasing the new viruses

the release of viral toxins by the new viruses inside the host cell

the creation of new viruses through cell division

the interference of the cell’s life functions by the new viruses which cause cell death

Many plant-eating organisms, including humans and grazing animals, are unable to digest the cellulose that makes up plant cell walls. Most plant-eaters have a symbiotic relationship with a microorganism that actually digest the cellulose releasing the nutrients for the herbivore’s use. Which organism lives in many herbivore intestine and aids in the digestive process?

The protozoan Entamoeba histolytica

Many plant-eating organisms, including humans and grazing animals, are unable to digest the cellulose that makes up plant cell walls. Most plant-eaters have a symbiotic relationship with a microorganism that actually digest the cellulose releasing the nutrients for the herbivore’s use. If a grazing animal unable to digest cellulose did not have this symbiotic microorganism, what might happen to the animal?

The grazer would probably not be able to get enough nutrients to survive.

The grazer would realize that it needed to find another food source besides plants.

Over time, evolution would occur and the grazer would adapt to new food.

The grazer would find a plant to eat that did not have cellulose cell walls.

The algal bloom called red tide

produces toxins that can harm fish and humans

causes a tremendous increase in oxygen content

forms a mutualistic relationship with shellfish

results in nitrogen-fixation in marine waters

The tetanus vaccine is a liquid containing an inactivated toxin from the tetanus bacteria. Vaccinated individuals become protected against tetanus because the inactivated toxin

promotes production of antibodies

prevents any future viral invasions

causes an inflammatory response

causes illness but not fatalities

Milk that you purchase in the grocery store has gone through a process where it has been heated and then cooled. The most probable reason for heating the milk would be to –

control pathogen growth in the milk

improve the flavor and color of the milk

reduce the amount of fat in the milk

Certain white blood cells use phagocytosis to

secrete toxins to destroy pathogens

Memory cells are responsible for the secondary response being

faster than the primary response

slower than the primary response

the same speed as the primary response

none of these. Memory cells are not part of the secondary response

When invaded with a pathogen, macrophages:

send chemical messages to the lymph nodes

send for T-cells to guide the attack against the antigen

What is the role of antibodies in fighting a virus?

they recognize and neutralize the virus

What is the role of the Helper T-cell?

they direct the other immune cells

As a defense against infection, a fever is created by the body in order to --

all of the answer choices are correct

raise body temperature to combat pathogens

increase the production of Helper T-cells

HIV attacks our immune system by:

releasing toxins which destroy macrophages

The difference between the primary and secondary immune response is:

In the secondary response the antigen is disabled in a shorter amount of time

The primary immune response is much faster

The numbers of antibodies produced in the primary response is greater

There is no difference between the two immune responses

The immune response is especially compromised by an HIV infection because

the HIV attaches to and destroys Helper T cells (CD4’s)

the HIV multiplies faster than any other virus

the HIV has an extra layer of protection that prevents the immune system from detecting the virus

the HIV is transmitted from one person to another through casual contact, like holding hands

Defense & Immune System

Authored by Mikel Salsgiver

Biology

9th - 10th Grade

Used 33+ times

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MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Health-care workers are exposed to many different types of pathogenic and nonpathogenic microorganisms. Which body systems work together to protect the body from pathogens?

Digestive and excretory

Endocrine and reproductive

Circulatory and immune

Muscular and skeletal

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The only characteristic shared by a virus and a living cell is that they both --

store genetic information in nucleic acids

are primitive prokaryotes without nuclei

perform respiration to obtain energy

have a cell membrane and cytoplasm

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

An electron microscope photograph of a virus is shown.
The projections on the surface of this virus allow the virus to —

engulf a host cell

attach to a host cell

control a host cell’s DNA

signal other viruses to infect a host cell

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which cell does the human immunodeficiency virus (HIV) directly attack that impairs the functioning of the immune system?

Helper T-cells

Killer T-cells

Memory B-cells

Macrophages

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Viruses, unlike bacteria,

cause diseases only in animals

can be destroyed by antibiotics

are eukaryotic, with a nucleus

can reproduce only in living cells

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The major destructive result of an infection from invading viruses such as the influenza virus is --

release of viral toxins in the bloodstream.

destruction of cells by viral enzymes

destruction of cells by viral replication

interfering with the cell’s life functions

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cold sores are caused by the herpes simplex virus type 1. A company that wants to develop antiviral drugs would ask a research immunologist to study —

the mechanism used by the virus to infect cells

how closely related the virus is to cold viruses

the metabolism of the virus

meiosis in the virus

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Defense & Immune System

Health-care workers are exposed to many different types of pathogenic and nonpathogenic microorganisms. Which body systems work together to protect the body from pathogens?

The only characteristic shared by a virus and a living cell is that they both --

An electron microscope photograph of a virus is shown.The projections on the surface of this virus allow the virus to —

Which cell does the human immunodeficiency virus (HIV) directly attack that impairs the functioning of the immune system?

Viruses, unlike bacteria,

The major destructive result of an infection from invading viruses such as the influenza virus is --

Cold sores are caused by the herpes simplex virus type 1. A company that wants to develop antiviral drugs would ask a research immunologist to study —

The steps involved in viral replication are shown on the diagrams.Place the steps in the correct order by listing the letters in the proper sequence:

The final step in the viral replication cycle (the lytic cycle) not shown in the diagrams is

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Biology

An electron microscope photograph of a virus is shown.
The projections on the surface of this virus allow the virus to —

The steps involved in viral replication are shown on the diagrams.
Place the steps in the correct order by listing the letters in the proper sequence: