ATI TEAS SCIENCE EXAM 2025 WITH CORRECT
ANSWERS
Lysosomes - ANSWER -cell organelle filled with enzymes needed to break down certain materials
in the cell
cell membrane - ANSWER -thin, flexible barrier around a cell; regulates what enters and leaves
the cell
Cell wall - ANSWER -found only in plant and bacteria this structure is found outside the cell
membrane and serves as a more rigid protective barrier
mRNA - ANSWER -messenger RNA; type of RNA that carries instructions from DNA in the nucleus
to the ribosome
What does the respiratory system do? - ANSWER -Brings in oxygen to go into the cells, and picks up
carbon dioxide to be removed from the bodyguard
What are the 7 parts of the respiratory system? - ANSWER -1. Nose
2. Pharynx
3. Larynx (voice box)
4. Trachea (windpipe)
5. Bronchi
6. Bronchioles
7. Alveoli
What are alveoli surrounded by to allow the exchange of O2 and CO2? - ANSWER -Capillaries
,What is cilia? - ANSWER -Tiny hairs in the nose and trachea that wave particles up away and out
What is mucus? - ANSWER -Something that keeps the air warm and moist but also traps particles
How many alveoli does each lung have? - ANSWER -150 million
What does hemoglobin do? - ANSWER -Carries oxygen through the blood
What is pleura? - ANSWER -Sacs that surround the lungs
What is the diaphragm? - ANSWER -The muscle at the bottom of the thoracic cavity
What happens during inhalation? - ANSWER -Diaphragm moves down (contracts), rib cage rises,
volume of chest cavity increases, air moves in to fill the space
What happens during exhalation? - ANSWER -Diaphragm moves up (relaxes), rib cage lowers, space
becomes smaller, air is pushed out of lungs
What does the medulla oblongata do? - ANSWER -Controls breathing
What is chronic bronchitis? - ANSWER -Bronchi swell and become clogged with mucus
What is emphysema? - ANSWER -Tissues in lungs lose elasticity; tissues can't enough O2 or get rid
of enough CO2
What is lung cancer? - ANSWER -Cells that do not stop reproducing; can spread to other locations
,because lungs are so central and connected to so much; survival is generally less then 5 years
from diagnosis
What is heart disease? - ANSWER -Blood vessels are constricted, blood pressure rises, heart has to
work harder, heart wears out more quickly
What is cystic fibrosis? - ANSWER -Genetic (recessive); lungs can get clogged with mucous
What is mesothelioma? - ANSWER -Lungs become exposed to asbestos and lose elasticity
What is elastic recoil? - ANSWER -The ability for the alveoli to get filled with air then return to
their normal shape once the air is released
What is a spirometer? - ANSWER -an instrument for measuring the air capacity of the lungs
What is tidal volume? - ANSWER -The amount of air taken in and breathed out in a typical breath
What is supplemental volume? - ANSWER -The xtra air that can be inhaled or exhaled with a deep
breath
What is reserve amount? - ANSWER -The amount of extra air you can breathe out when you force
air out of your lungs
What is residual amount? - ANSWER -The amount of air in your lungs that you cannot get rid of
(even during forced exhaling)
What is vital capacity? - ANSWER -All the air you can control going in or out of your lungs
(supplemental + reserve = vital)
, What is total capacity? - ANSWER -From the top of your supplemental amount to the bottom of
your residual volume
Main idea - ANSWER -the most important or central thought of a paragraph or larger section of
text, which tells the reader what the text is about
Topic - ANSWER -a particular issue or idea that serves as the subject of a paragraph, essay,
report, or speech
-topic is the general subject of a paragraph
-Topics are simple and are described with just a word or a phrase.
-main idea is a complete sentence; it includes the topic - ANSWER -What's the difference
between a topic and main idea?
Key ideas - ANSWER -Ideas that support controlling idea
Controlling idea - ANSWER --your opinion about the topic.
- It helps the reader understand your purpose for writing the paragraph or essay
Conclusion - ANSWER -A deduction made by the reader about an unstated outcome from reading
passage
Inference - ANSWER -A conclusion one can draw from the presented details.
anatomical position - ANSWER -a standard position in which the body is facing forward, the feet
are parallel to each other, and the arms are at the sides with the palms facing forward
ANSWERS
Lysosomes - ANSWER -cell organelle filled with enzymes needed to break down certain materials
in the cell
cell membrane - ANSWER -thin, flexible barrier around a cell; regulates what enters and leaves
the cell
Cell wall - ANSWER -found only in plant and bacteria this structure is found outside the cell
membrane and serves as a more rigid protective barrier
mRNA - ANSWER -messenger RNA; type of RNA that carries instructions from DNA in the nucleus
to the ribosome
What does the respiratory system do? - ANSWER -Brings in oxygen to go into the cells, and picks up
carbon dioxide to be removed from the bodyguard
What are the 7 parts of the respiratory system? - ANSWER -1. Nose
2. Pharynx
3. Larynx (voice box)
4. Trachea (windpipe)
5. Bronchi
6. Bronchioles
7. Alveoli
What are alveoli surrounded by to allow the exchange of O2 and CO2? - ANSWER -Capillaries
,What is cilia? - ANSWER -Tiny hairs in the nose and trachea that wave particles up away and out
What is mucus? - ANSWER -Something that keeps the air warm and moist but also traps particles
How many alveoli does each lung have? - ANSWER -150 million
What does hemoglobin do? - ANSWER -Carries oxygen through the blood
What is pleura? - ANSWER -Sacs that surround the lungs
What is the diaphragm? - ANSWER -The muscle at the bottom of the thoracic cavity
What happens during inhalation? - ANSWER -Diaphragm moves down (contracts), rib cage rises,
volume of chest cavity increases, air moves in to fill the space
What happens during exhalation? - ANSWER -Diaphragm moves up (relaxes), rib cage lowers, space
becomes smaller, air is pushed out of lungs
What does the medulla oblongata do? - ANSWER -Controls breathing
What is chronic bronchitis? - ANSWER -Bronchi swell and become clogged with mucus
What is emphysema? - ANSWER -Tissues in lungs lose elasticity; tissues can't enough O2 or get rid
of enough CO2
What is lung cancer? - ANSWER -Cells that do not stop reproducing; can spread to other locations
,because lungs are so central and connected to so much; survival is generally less then 5 years
from diagnosis
What is heart disease? - ANSWER -Blood vessels are constricted, blood pressure rises, heart has to
work harder, heart wears out more quickly
What is cystic fibrosis? - ANSWER -Genetic (recessive); lungs can get clogged with mucous
What is mesothelioma? - ANSWER -Lungs become exposed to asbestos and lose elasticity
What is elastic recoil? - ANSWER -The ability for the alveoli to get filled with air then return to
their normal shape once the air is released
What is a spirometer? - ANSWER -an instrument for measuring the air capacity of the lungs
What is tidal volume? - ANSWER -The amount of air taken in and breathed out in a typical breath
What is supplemental volume? - ANSWER -The xtra air that can be inhaled or exhaled with a deep
breath
What is reserve amount? - ANSWER -The amount of extra air you can breathe out when you force
air out of your lungs
What is residual amount? - ANSWER -The amount of air in your lungs that you cannot get rid of
(even during forced exhaling)
What is vital capacity? - ANSWER -All the air you can control going in or out of your lungs
(supplemental + reserve = vital)
, What is total capacity? - ANSWER -From the top of your supplemental amount to the bottom of
your residual volume
Main idea - ANSWER -the most important or central thought of a paragraph or larger section of
text, which tells the reader what the text is about
Topic - ANSWER -a particular issue or idea that serves as the subject of a paragraph, essay,
report, or speech
-topic is the general subject of a paragraph
-Topics are simple and are described with just a word or a phrase.
-main idea is a complete sentence; it includes the topic - ANSWER -What's the difference
between a topic and main idea?
Key ideas - ANSWER -Ideas that support controlling idea
Controlling idea - ANSWER --your opinion about the topic.
- It helps the reader understand your purpose for writing the paragraph or essay
Conclusion - ANSWER -A deduction made by the reader about an unstated outcome from reading
passage
Inference - ANSWER -A conclusion one can draw from the presented details.
anatomical position - ANSWER -a standard position in which the body is facing forward, the feet
are parallel to each other, and the arms are at the sides with the palms facing forward
