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SCSHS Yr 9 Sci - Lines of Defence in the Human Body Flashcards | StudBud
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SCSHS Yr 9 Sci - Lines of Defence in the Human Body
SCSHS Yr 9 Sci - Lines of Defence in the Human Body
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Lines of Defence in the Human Body (1st, 2nd, 3rd & Vaccination) #biology #highschool #science
Flashcards
29 cards
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Practice quiz
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Host live
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Questions
29
Answers
1
What allowed the antibody count on the graph to increase so quickly after the 2nd infection?
more WBCs were present
memory B-cells for the antigen existed
antibodies were already in the blood
memory T-cells with pre-made antibodies existed
2
Which level of defence is specific?
1st
4th
2nd
3rd
3
Which type of cell creates antibodies in the 3rd line of defence?
T-cells
B-cells
macrophages
red blood cells
4
The body's non-specific defence (1st line) against invading pathogens includes...
antibiotics
T-cells
skin
antibodies
5
The spreading of microbes occurs by transmission through which of the following modes?
air, water, animals, contact
air, water, contact
air, animals
air, water, animals
6
The body's non-specific 2nd level of defence includes...
increased blood flow, fever & inflammatory response
increased blood flow, inflammatory response & shivering
fever, decreased blood flow & blood clotting
shivering & antibody production
7
True or False. Any antibody produced will recognise an antigen on any pathogen.
False
True
8
If you don't take all the antibiotics prescribed correctly the bacteria might mutate and form
bigger bacteria
viruses
bacterial resistance
more bacteria
9
Cells of the immune system are able to respond to invading organisms because they recognise the
antibodies present in invading pathogens
antigens present on the invaders
antibiotics released from microbes
DNA patterns in the nuclei of the viruses
10
The 1st line of defence against microbes consists of...
physical & chemical barriers including tears & saliva
chemical barrier of hormones
physical barrier of hair & chemical barrier of stomach acid
chemical barrier of antibiotics
11
If pathogens enter your nose which line of defence will activate first?
fever (2nd line)
stomach acid (1st line)
mucous membranes (1st line)
antibodies (3rd line)
12
Which of the following can best be compared to soldiers?
capillaries
white blood cells
lungs
red blood cells
13
What line of defence is represented in the following picture?
1st
2nd
no line
3rd
14
The skin, mucous membranes and cilia are part of the Immune system's...
Fourth line of defense
First line of defense
Third line of defense
Second line of defense
15
True or False. It takes a few days for enough antibodies to be produced to kill off a pathogen.
False
True
16
Term to represent the majority of the population being immunised to protect vulnerable members.
herd immunity
majority immunised
population immunity
vaccination overload
17
If a person has memory B-cells against a certain pathogen, the person is...
more contagious to other people
less likely to get the disease
still sick with the disease
able to spread the disease
18
When getting a vaccination, which substance is injected into the body?
bacteria to combat a pathogen
dead or weakened form of the virus
antibiotics to kill a virus
white blood cells to engulf a pathogen
19
Vaccines are used to help prevent you from getting ______ infections.
viral
bacterial
protist
fungal
20
True or False. Pathogens cause illness in 3 main ways: toxins, reproduction and immune response
True
False
21
What disease was the first vaccine trying to prevent?
cowpox
chickenpox
smallpox
measles
22
True or False. Organisms that cause disease are known as pathogens.
False
True
23
True or False. Pathogens make toxins that destroy a person's cells and make them feel unwell.
False
True
24
Which blood component protects the body by engulfing and digesting the bacteria?
plasma
WBCs e.g. macrophages
red blood cells
WBCs e.g. T-cells and B-cells
25
Microorganisms that live in and on the human body...
are only pathogenic
are only beneficial
have no effect
are beneficial or pathogenic
26
The job of the Immune System is to
fight pathogens
spread oxygen
help exercise
break down food
27
Is the correct order for stages of fighting an infection with the 3rd line of defence shown?
Yes
No
28
True or False. The whole of a body cell is destroyed when it becomes infected by a pathogen.
True
False
29
The human body's response to a bacterium/virus is controlled by...
T-cells and B-cells
phagocytes, macrophages, T-cells and B-cells
red blood cells and phagocytes
T-cells, B-cells and platelets
