Which phylum is a member of the Radiata?
a. Porifera
b. Nemertea
c. Rotifera
d. Ctenophora
Ans: d. Ctenophora
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What change would increase the rate of oxygen diffusing from lung alveoli into the blood?
A. A decrease in the pH of the blood entering the lungs B. An increase in the hemoglobin concentration of the red blood cells C. An increase in the partial pressure of oxygen in the blood entering the lungs D. An increase in the humidity of air in the lungs E. A decrease in the partial pressure of oxygen in the alveoli Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about diffusion? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The arrival of fat-rich chyme to the duodenum stimulates the gall bladder to contract and release _________ into the small intestine.
A. bile B. cholecystokinin C. secretin D. lipase E. chylomicrons
What is a "benign" tumor?
A) A mass of cancerous cells B) A single mutated cell that could potentially develop into cancer C) A mass of cells that grows out of control and spreads to other tissues D) A mass of cells that grows out of control but remains at the site of origin
Enzymes decrease the overall free energy change in a chemical reaction.
Answer the following statement true (T) or false (F)