12 Questions
What is the purpose of a feedback system in the body?
To monitor and evaluate the status of the body's condition
Which component of the feedback system is responsible for detecting changes in the body's environment?
Receptor
What is the primary function of negative feedback systems in the body?
To maintain stability and prevent excessive change
In which part of the body do the highest proportions of water compose 80–85 percent of their masses?
Brain
Which of the following is NOT a basic cell function related to obtaining nutrients and oxygen?
Synthesizing proteins needed for cell structure and growth
What is the primary function of performing chemical reactions that use nutrients and O2?
To provide energy for the cells
Why is obtaining food (nutrients) and oxygen (O2) crucial for all cells?
To perform chemical reactions that provide energy for the cells
Which of the following is a key part of a cell's response to changes in the surrounding environment?
Being sensitive and responsive to changes in the surrounding environment
Which atoms make up 96% of the total body chemistry?
Oxygen, carbon, hydrogen, and nitrogen
At which level of organization in the human body do cells become the basic units of life?
The cellular level
Which atoms and molecules are the inanimate raw ingredients from which all living things arise?
Oxygen, carbon, hydrogen, nitrogen, proteins, carbohydrates, fats, and nucleic acids
What is the fundamental unit of both structure and function in a living being?
The cell
Test your knowledge on the process of cell differentiation and specialization in complex multicellular organisms. Learn about how cells become specialized to carry out specific functions and the importance of this process in the human body.
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