What is NOT one of the four core principles related to homeostasis?
A) cell-cell communication B) metabolism
C) feedback loops D) gradients
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
Answer: B
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Answer the following statements true (T) or false (F)
1. Artificial passive immunity can be effective even after a person has been exposed to the infectious organism. 2. The surface protein on a cancer cell or a microorganism can be an antigen. 3. An antibody and an antigen fit together like a key in a lock. 4. Antigens have the ability to neutralize specific toxins in the body. 5. When an antigen and an antibody unite, macrophages can destroy the antigen more efficiently.
The most dominant factor influencing the BMR is the level of circulating, active thyroid hormone
Indicate whether the statement is true or false
Which is true when you are sympathetically stimulated?
a. the SA node depolarizes more rapidly. b. the myocardium repolarizes more rapidly. c. more Ca2+ results in more sarcomere crossbridge attachments. d. norepinephrine is stimulating the heart. e. all of these answers.
True or False? The lymphatic system works closely with the respiratory system. Select one:
a. true b. false