Enzymes
Enzymes fit like a "_______ &______" or __________ pieces
lock, key, puzzle
Define Homeostasis.
Body keeping a stable environment
What level of organization is the digestive system.
Organ system.
How does the digestive system actually break down the food.
Enzymes.
2 reactions enzymes take part in
Digestion/Synthesis
2 ways are body maintains homeostasis.
Sweat, shiver, tears, blood glucose level
What is the main function of the circulatory and digestive system?
Transport nutrients and oxygen, break down nutrients for the body to use.
Which body system is responsible for identifying and destroying pathogens?
immune
Define denature
Enzyme changes shape, or it doesn't work anymore
When a duck dives into cold water, the capillaries in its skin constrict and move deeper below the surface of the skin. This reaction is an example of
Homeostasis
How does the respiratory and circulatory system work together to maintain homeostasis?
The respiratory system brings in oxygen and removes CO2. Circulatory system transports both.
Tell me how 3 systems work together.
Answers vary
Name 2 environmental influences that can affect enzymes
Temp, pH,
If an organism is failing to reach homeostasis, what will happen? (2 things)
Name all the materials removed by the excretory system and the sites of removal? (3 of each)
water, salt, urea, CO2
Lungs, urination, sweat
What do antibodies do?
bind to the antigens on the pathogen so the pathogen can't bind to cells and infect them
What is the main reason for having enzymes?
Speeding up reactions
How does a red blood cell maintain homeostais.
What reaction does the digestive and respiratory system directly affect?
Cell Respiration.
What is the difference between a pathogen and an antigen?
Pathogen - an organism that can cause an illness, like a virus or bacteria
Antigen - molecules on the outside of a pathogen that is unique and can be recognized by our bodies