Question 5





Which of the following is NOT considered part of the lung?



alveoli


bronchioles


bronchi


none of the above

.

1 points


Question 6





Humans have the red-colored pigment ______ as their respiratory pigment.



chlorophyll


carotene


hemoglobin


none of the above

.

1 points


Question 7





Which of the following is NOT a part of the excretory system?



kidneys


liver


skin


none of the above

.

1 points


Question 8





All vertebrates have paired _________.



kidneys


Malpighian tubules


nephridium


none of the above

.

1 points


Question 9





Kidneys secrete waste to maintain __________.



body weight


homeostasis


muscle


none of the above