Unicellular vs Multicellular
Why can some organisms survive as a single cell?
They have all the life processes needed to survive.
What is the function of the digestive system?
To break down and absorb food. To remove waste.
Compare and contrast the circulatory system and the nervous system.
The circulatory system moves blood around the body and the nervous system sends messages using nerves to tell the body what to do. They both get stuff around the body.
Pat read in a science book that food should be chewed properly and never be swallowed whole. For what reason would food need to be chewed properly?
a. It allows for better breathing while eating.
b. It helps to taste food properly.
c. It allows the nutrients to get absorbed in the mouth.
d. It helps in the digestion of food that begins in the mouth.
d. It helps in the digestion of food that begins in the mouth.
What are some multicallular organisms?
Humans, fish, dogs, cats, snakes, etc
Name one organ in the respiratory system and its function.
Lungs, Trachea, diaphragm, nose, mouth
How does the cardiovascular system work with the respiratory system?
The cardiovascular system carries the oxygen and carbon dioxide that are taken in and out with the respiratory system.
Food is broken down into nutrients that are taken up by the blood vessels for transport to other body parts. Which statement best explains the given process in digestion?
Nutrients released from food in the mouth are transported by the circulatory system.
Nutrients released from food in the stomach are transported by the muscular system.
Nutrients released from food in the small intestine are transported by the circulatory system.
Nutrients released from food in the esophagus are transported by the muscular system.
3. Nutrients released from food in the small intestine are transported by the circulatory system.
How do unicellular and multicellular organisms compare?
How does the circulatory system help maintain life?
It pumps blood which moves oxygen and nutrients around the body. It also helps to remove waste.
Why is the digestive system essential for the other human body systems to function properly?
It breaks down the nutrients that the body needs to be able to function.
What is a major function of the nervous system?
To support and protect the body
To send messages to tell your body what to do
To break down food
To rid your body of waste like carbon dioxide.
2. To send messages to tell your body what to do
Why do multicellular organisms require specialized cells to survive?
Each cell has a specific purpose and they work together to allow the organism to be alive.
Describe the main function of the muscular system.
To help the body move.
Discuss the interconnectedness of the muscular and skeletal systems. Be sure to use specific vocabulary (tendons, ligaments, etc.)
The muscular system has muscles that allow the bones to move. The bones and muscles are attached by tendons. The bones to bones by ligaments.
A student listed some features of a multicellular organism. Which feature listed by the student is incorrect?
The organism has the ability to produce offspring.
The organism contains a well-developed transport system.
Different cell types of the organism perform different functions.
All cells of the organism can exchange substances with the outside environment.
4. All cells of the organism can exchange substances with the outside environment.
Give an example of a unicellular organism.
Bacterium, Amoeba, Euglena, Yeast
What does the respiratory system have to do with waste?
It takes the waste through the blood to the digestive system.
Explain how the respiratory system is dependent of the circulatory system.
The respiratory system needs the circulatory system to transport the oxygen and carbon dioxide.
What is a major function of the skeletal system?
To pump blood throughout the body.
To rid your body of waste like carbon dioxide.
To produce red blood cells through bone marrow.
To produce white blood cells through tendons.
3. To produce red blood cells through bone marrow.