Polyplacophora, Gastropoda, Bivalvia, and Cephalopoda are all lineages within the phylum ____
a. Rotifera
b. Mollusca
c. Platyhelminthes
d. Annelida
e. Nemertea
ANSWER: b
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If you were looking within a cell for organized clathrin structures, you would find them associated with which of the following structures?
A) lysosomes B) trans Golgi complex C) endoplasmic reticulum D) inner membrane of mitochondria E) extracellular matrix
Kidneys return most of the water and small solutes back to blood by way of _____
a. glomerular filtration b. tubular reabsorption c. tubular secretion d. both glomerular filtration and tubular reabsorption
A key role of the atrioventricular node is to
A. act as the pacemaker of the heart, by generating electrical signals in the right atrium. B. slow down the conduction of the electrical impulse as it passes from the atria to the ventricles. C. speed up the conduction of the electrical impulse as it passes from the atria to the ventricles. D. block backflow of blood from the aorta into the right ventricle. E. act as a barrier to prevent the electrical impulse in the atria from reaching the ventricles.
The nephridial organs of flatworms are called metanephridia
____________________ Indicate whether the statement is true or false.