What structure in the nephron filters blood?
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Which of the following structures is NOT part of the respira…
Which of the following structures is NOT part of the respiratory system?
Which structure collects urine from multiple nephrons?
Which structure collects urine from multiple nephrons?
What is the role of the juxtaglomerular apparatus in the kid…
What is the role of the juxtaglomerular apparatus in the kidney?
What happens during external respiration?
What happens during external respiration?
What is the primary function of the loop of Henle?
What is the primary function of the loop of Henle?
What substance is NOT normally found in urine?
What substance is NOT normally found in urine?
Which cells in the stomach produce hydrochloric acid?
Which cells in the stomach produce hydrochloric acid?
Before genes can be used to produce proteins, DNA must be co…
Before genes can be used to produce proteins, DNA must be converted into RNA. This is done through__________.
Ichthyosaurs were aquatic dinosaurs. Fossils show us that th…
Ichthyosaurs were aquatic dinosaurs. Fossils show us that they had dorsal fins and tails, as do fish, even though their closest relatives were terrestrial reptiles that had neither dorsal fins nor aquatic tails. The dorsal fins and tails of ichthyosaurs and fish are