Do your best to answer all the question that you can do for 100 points and brainlest.
if you put too many wrong answers i will report you.

1.
which organ of the excretory system stores urine until the body is ready to eliminate it?

urethra

ureters

urinary bladder

urea

2.
louis pasteur demonstrated that killing organisms that cause a disease could

make a person sick with that disease

prevent the spread of that disease

be accomplished only with over-the-counter medications

be accomplished only with antibiotics

3.
lyme disease and rabies are both examples of diseases that can be spread by means of

infected animals

fungi

viruses

bacteria

4.
what is the main function of the excretory system?

to collect and remove wastes from the body

to strengthen skeletal muscles

to protect the nervous system

to bring oxygen to body cells

5.
where in the respiratory system does gas exchange occur?

in the pharynx

in the alveoli

in the trachea

in the heart

6.
the dome-shaped muscle that plays an important role in breathing is the

diaphragm

larynx

alveolus

bronchus

7.
use the diagram to answer the question.

which describes structure a?

the larynx, which is located at the top part of the trachea

the bronchi, which direct air into the lungs

the pharynx, which is part of both the respiratory and digestive systems

the epiglottis, which closes off the trachea when a person swallows

8.
hairlike structures that line the nasal cavities and trachea are called

cilia

capillaries

bronchi

mucus

9.
which is part of the inflammatory response?

lymphocytes destroy pathogens.

t cells distinguish pathogens.

white blood cells destroy pathogens.

b cells produce antibodies.

10.
oxygen and carbon dioxide are exchanged in capillaries that surround tiny sacs called

larynx

bronchi

alveoli

trachea

11.
use the diagram to answer the question.

what is structure c?

bronchi

larynx

trachea

epiglottis

12.
in which excretory organ is urea produced?

kidneys

liver

lungs

skin

13.
organs of excretion that maintain homeostasis include the kidneys, lungs, skin, and

bronchus

diaphragm

liver

bladder

14.
pathogens known as must get inside living cells to reproduce.

bacteria

viruses

protists

fungi

15.
during gas exchange, which substance moves from the alveoli into the blood?

water

oxygen

carbon dioxide

nitrogen