Diffusion and Osmosis
Sam baked cookies in the oven. His brother could eventually smell the cookies in the basement. What process allows his brother to smell the cookies in another room?
Diffusion
Identify the following formula:
C6H12O6 + 6O2 -----> 6CO2 + 6H2O + ATP
Cellular respiration
True or False:
Organs are made up of cells and tissues.
True
Which body system controls all of the other body systems?
Nervous system
What is the most simple level of organization in an organism?
Cells
What is a special type of diffusion that involves water moving across a cell membrane?
Osmosis
Identify the following formula:
6CO2 + 6H2O ------> C6H12O6 + 6O2
Photosynthesis
List the levels of organization from most simple to most complex.
Cells - Tissues - Organs - Organ Systems - Organism
The main purpose of the _____________ system is to act as a first line of defense and protect the body from the outside environment.
Integumentary system
Define diffusion.
The movement of molecules from an area of high concentration to low concentration until equilibrium is reached.
During diffusion or osmosis, particles move from an area of ___________ concentration to __________ concentration.
HIGH concentration to LOW concentration
During cellular respiration, what substances are needed to produce energy for the cell?
Glucose and Oxygen
(C6H12O6 and O2)
An organ like the lungs are made up of specialized _______________ that work together to perform a specific job.
Tissues
The ______________ system is responsible for the removal of metabolic waste from the blood.
Excretory system
Which of the following parts of the human body is most complex?
Brain
Stomach lining
Red blood cell
Digestive system
Digestive system
When the concentration of molecules is the same on both sides of a cell membrane, the molecules will...
Continue to move across the membrane in both directions.
Photosynthesis occurs in the ______________ and cellular respiration occurs in the ______________.
Photosynthesis - chloroplasts
Cellular respiration - mitochondria
A group of muscle cells are an example of what level of organization?
Tissue
How does the respiratory system depend on the circulatory system?
The respiratory system needs to circulatory system to transport oxygen and carbon dioxide.
The respiratory system depends on the nervous system for signals to:
A. Increase the amount of available oxygen in the lungs.
B. Coordinate muscles controlling breathing.
C. Release enzymes to increase the exchange of gases.
D. Exchange gases with the circulatory system.
B. Coordinate muscles controlling breathing
A cell that is made of 30% glucose and 70% water is placed in a beaker of 100% water. According to the principles of osmosis, what will most likely happen to the cell?
The cell will expand as the water molecules move from the beaker into the cell.
What chemical compounds are the products of photosynthesis and the reactants of cellular respiration?
Glucose (C6H12O6)
Oxygen (O2)
What represents the highest level of organization within an organism?
Organ systems
Which two body systems work together when the diaphragm contracts and relaxes, causing air to move in and out of the lungs.
Muscular system and respiratory system.
What chemical compounds are the reactants of photosynthesis and the products of cellular respiration?
Carbon dioxide (CO2)
Water (H2O)