The organelle that stores food, etc. is the vacuole.
Answer:
<em>A</em>
Explanation: THE ANSWER IS A BECAUSE I TOOK THE PRACTICE ON USATESTPREP AND AS SOON AS I CLICKED C I GOT IT WRONG AND IT SAID THE ANSWER WAS<em> A- All of the light passes through the object.</em>
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The answer should be b: active transport
<span>Answer: occurs when the aortic and pulmonary valves backfill with blood</span>
The second heart sound,that is heard in normal hearts, is generated by the closing of the semilunar valves((the aortic valve and pulmonary valve). Before that, the first sound corresponds to the closing of the atrioventricular valves.