1. Which of the following is the process in which part of the output of a system is returned to its input in order to regulate its further output? A. Mechanisms B. Feedback C. Positive Feedback D. Negative feedback 2.) Which two body systems in most animals are involved in taking up oxygen from the environment and transporting oxygen to body cells? A. digestive and respiratory B. respiratory and circulatory C. circulatory and nervous D. nervous and excretory 3. which of the following processes is for removal of wastes from cellular metabolism (CO2, ammonia, etc.)? A. Respiration B. Circulation C. Excretion D. Digestion 4. Purpose: Obtain energy and nutrients? A. Respiration B. Circulation C. Excretion D. Digestion 5. Purpose: Exchange oxygen and carbon dioxide gases? A. Respiration B. Circulation C. excretion D. digestion
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1. Which of the following is the process in which part of the output of a system is returned to its input in order to regulate its further output?
A. Mechanisms
B. Feedback
C. Positive Feedback
D. Negative feedback
2.) Which two body systems in most animals are involved in taking up oxygen from the environment and transporting oxygen to body cells?
A. digestive and respiratory
B. respiratory and circulatory
C. circulatory and nervous
D. nervous and excretory
3. which of the following processes is for removal of wastes from cellular metabolism (CO2, ammonia, etc.)
A. Respiration
B. Circulation
C. Excretion
D. Digestion
4. Purpose: Obtain energy and nutrients?
A. Respiration
B. Circulation
C. Excretion
D. Digestion
5. Purpose: Exchange oxygen and carbon dioxide gases?
A. Respiration
B. Circulation
C. excretion
D. digestion