7.12E (E) - When an animal gets overheated, homeostasis will cause the animal to sweat and pant in an effort to maintain internal stability. Which situation shows a similar example of homeostasis in cells?

• A cell is invaded by a virus

• A cell's nucleus send signals throughout the cell in order to produce protein

• Water enters a cell through the cell membrane because the cell is dehydrated

• A cell goes through mitosis, producing a new cell

Tags

NGSS.HS-LS1-3

7.12B (S) - Which body system moves oxygen into the blood and removes carbon dioxide from

the blood?

• Excretory

• Digestive

• Respiratory

• Skeletal

7.12B (S) - The diagram above shows the human digestive system. What is the function of the organ represented by the number 3?

• chemical digestion

• absorption of water

• breaking down toxic substances

• production of digestive enzymes

7.12B (S) - When eating a cookie where is the first place physical change occurs in the Digestive System?

• chewing by the teeth

• movement of the tongue

• squeezing by the esophagus

• contraction of the stomach

7.12B (S) - The image represents a section of a vein in the human body. By looking at structures A, you can determine that their function is to

• allow two-way flow of blood through the vessel

• slow the flow of blood on both sides of the valves

• prevent blood from flowing in the reverse direction

• control the volume of blood flow

7.12B (S) - Different parts of the circulatory system are adapted for different functions. A blood vessel that is very narrow and has thin walls is MOST LIKELY specialized for

• storing blood until it is needed

• passing materials in blood to cells

• carrying blood over long distances

• withstanding high blood pressures

7.12B (S) - The table summarizes some of the structures and functions of the human body. What term should replace X in the table?

• Muscles

• Bones

• Skin

• Arteries

7.12B (S) - The table summarizes some of the structures and functions of the human body. What terms should replace Y in the table?

• Protects the body from germs

• Allows the body to match the temperature of the environment

• Provides a way for carbon dioxide to leave the body

• Allows the body to move

7.12B (S) - Devon has cystic fibrosis or CF. It is an inherited condition that causes his body to

produce excess mucus and lower than normal levels of digestive enzymes. A person with CF often experiences the following symptoms:

· frequent lung infections

· poor energy level

· low appetite

Although all of Devon’s body systems are affected by cystic fibrosis, it is mainly a disorder of which two body systems?

• circulatory and digestive

• digestive and skeletal

• digestive and respiratory

• circulatory and respiratory

Tags

NGSS.MS-LS1-5

NGSS.MS-LS3-1

7.12B (S) - One of the functions of the skeletal system in the body is to?

• circulate blood to all parts of the body

• collect waste products and remove them from the body

• provide a strong framework for the body

• produce enzymes to help digest food