Homeostasis
What is homeostasis
Stable internal conditions
This feedback look leans away from the disturbance.
Negative
When molecules naturally move from an area of high concentration to low concentration, this process is called _____.
Diffusion
what won the opening NFL game this week
Seahawks
What is our general homeostatic point when it comes to body temperature
98.6
this feedback look leans into the disturbance, until it is resolved.
Positive feedback loop
A person breathes in, bringing oxygen into the lungs. The oxygen concentration is now higher in the lungs than in the blood, so oxygen moves into the bloodstream and is carried to body cells. What process moves the oxygen into the blood, and is it active or passive transport?
What is diffusion, and passive transport?
Who is the starting quarterback for the Arizona Cardinals (this week)
Brisset
What is the opening and closing of stomata used to regulate besides CO2 and O2?
Water loss
ripening of bananas is an example of this feedback loop
Positive feedback loop
A person becomes severely dehydrated, causing the fluid surrounding their red blood cells to have a higher solute concentration than inside the cells. What happens to the red blood cells, and what type of transport causes it?
The red blood cells shrink as water moves out of them by osmosis.
What are the two largest lizards in the state of AZ (naturally)
Gila Monster and chuckwalla
What are two Homeostatic processes our body uses to cool down on hot day
Vasodilation (sending blood to the outer skin to cool down, like the face) and sweating
Name the stimulus, sensor, control center, effector and result of this scenario
A student begins jogging, cellular respiration increases and more carbon dioxide enters their blood. Specialized cells in the blood vessels detect the increase in carbon dioxide and send signals to the brain. The brain processes this information and sends signals to the diaphragm (breathing muscles). These muscles begin contracting faster, increasing the student's breathing rate. As a result, more carbon dioxide is exhaled and the amount of carbon dioxide in the blood returns toward its normal level.
Stimulus = increased blood CO₂; Sensor = specialized cells; Control center = brain; Effector = diaphragm; Result = increased breathing removes more CO₂ and blood CO₂ returns toward normal.
The sodium-potassium pump helps nerve and muscle cells send electrical signals by moving sodium and potassium against their concentration gradients. What type of transport does it use, and what provides the energy?
Active transport, ATP
What is the one of the only birds in AZ that find most of its food by smell?
Black vulture or turkey vulture
if a plant is in drought conditions and a student uses a spray bottle to mist a plant. what physical feature would the student expect to see change almost immediately with the plant?
How many stomata are open
A cell's internal solute concentration rises above normal. Membrane channels open, allowing solutes to leave the cell by diffusion. What type of feedback is occurring AND predict the direction water will initially move across the membrane.
Negative feedback; water will initially move into the cell by osmosis because the solute concentration is higher inside the cell.
A cell membrane folds around and completely surrounds a large food particle, bringing it inside the cell. Later, the membrane surrounding waste fuses with and becomes part of the cell membrane, releasing the waste outside. What are these two types of transport, in order?
Endocytosis (Intocytosis)
and Exocytosis (exitcytosis)
In 1912, Arizona became the 48th state on what "holiday"?
Valentines' day (aka AZ statehood day)