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Revision-Homeostasis and Immunity

Total questions: 20

Worksheet time: 11mins

Name
Class
Date
1.
If the environment gets cold, we will often shiver in order to:
a)
keep body temperature the same as the external temperature
b)
decrease body temperature
c)
increase body temperature
d)
regulate blood pressure
2.
Homeostasis in the human body is often maintained by a: 
a)
neutral feedback loop 
b)
solar feedback loop
c)
positive feedback loop
d)
negative feedback loop
3.
The "cause" for something to happen is the
a)
response
b)
effect
c)
stimulus
d)
homeostasis
4.
a body system that controls growth and homeostasis by secreting hormones from glands.
a)
skeletal system
b)
nervous system
c)
endocrine sytem
d)
integumentary system
5.
Homeostasis
a)
allows for a wildly fluctuating internal environment
b)
is impossible in vertebrates
c)
is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation
d)
is the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation
6.

Anti-diuretic hormone (ADH) affects the permeability of which section of the nephron tubules

a)

Proximal (first) convoluted/coiled tubual

b)

Loop of Henle

c)

Distal (second) convoluted/coiled tubual

d)

Collecting duct

7.

Which area of the brain contains the receptors responsible for detecting changes in water potential

a)

Hypothalamus

b)

Medulla Oblongata

c)

Amygdala

d)

Hippocampus

8.

If you are dehydrated (low water potential in the blood), the body must conserve water. To do so, the brain triggers the pituitary gland to ...

a)

release MORE ADH, making the collecting duct MORE permeable

b)

release LESS ADH, making the collecting duct LESS permeable

c)

release MORE ADH, making the collecting duct LESS permeable

d)

release LESS ADH, making the collecting duct MORE permeable

9.

In which of the following, do blood vessels near the surface of the body loosen up to release heat?

a)

Vasoconstriction

b)

Vasodilation

10.

Excess glucose in the bloodstream is converted to which other substance when stored in the liver and muscle cells?

a)

glygogen

b)

glucagon

c)

glycerin

d)

glycerol

11.
The gland that stimulates body metabolism
a)
Thyroid
b)
testes
c)
ovary
d)
adrenal
12.
What is a protective protein produced by the immune system?
a)
Antibody
b)
Antibiotic
c)
Antigen
d)
Antimicrobial
13.
What do antibodies attach to on the pathogen?
a)
Anti inflammatory
b)
Antigens
c)
Antiseptic
d)
Antibodies
14.

How do T cells differ from B cells?

a)

T cells fight pathogens by killing pathogens directly, while B cells fight pathogens by making antibodies.

b)

T cells only make memory cells, and B cells only make antigens

c)

T cells fight pathogens by making antibodies, while B cells fight pathogens by killing pathogens directly.

d)

T cells can only fight off pathogens the body has encountered once, and B cells can fight off any pathogen the body comes across.

15.
What function does mucus play in the immune system?
a)
traps foreign particles from entering the body
b)
moistens food
c)
produces WBCs
d)
acts as a lubricant
16.
White blood cells are an important part of the human immune response. Two types of white blood cells, neutrophils and macrophages, act as phagocytes. Phagocytes perform which of the following functions in the human body? 
a)
They produce antibodies.
b)
They bind to antigens and develop into plasma cells.
c)
They form a barrier against pathogens.
d)
They engulf and destroy bacteria.
17.

Passive immunity is when

a)

You produce your own antibodies to a disease

b)

You are given antibodies to a disease

c)

You are immune to any type of disease

d)

Macrophages invade your lymphatic system and shield you from ever falling sick

18.

A vaccination

a)

Is a type of white blood cell that eats bacteria

b)

Protects your body via needle or capsule

c)

Causes your body to react as if it had met a pathogen

d)

Is made up of collagen, and can be in the form of gelatine

19.

Active immunity is when

a)

You produce your own antibodies to a disease

b)

You are given antibodies to a disease

c)

You are immune to any type of disease

d)

Macrophages invade your lymphatic system and shield you from ever falling sick

20.
Pathogens are recognized by their...
a)
antigens
b)
antibodies
c)
killer t-cells
d)
B-cells

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