Biology, 27.03.2020 05:54 bellc42069
Which best describe the isovolumetric contraction phase of the cardiac cycle? Which best describe the isovolumetric contraction phase of the cardiac cycle? The pressure from the atrial contractions opens the semilunar valves. As pressure builds up in the ventricles during systole, the AV valves open and allow blood to leave the heart. As ventricular systole starts, the AV valves are closed and the semilunar valves are closed. Because the ventricles are contracting and both valves are closed, pressure increases rapidly leading to ejection. As ventricular systole starts, the AV valves close, which immediately opens the semilunar valves.
Answers: 3
Biology, 21.06.2019 21:00
1. environmental factors, such as ph and temperature, can affect the function of an enzyme. a. true b. false 2. which of the following is an organic molecules (ex. vitamins) that an enzyme? a. coenzyme b. product c. active site d. substrate 3. how do enzymes effect the speed of a chemical reaction? a. they speed it up b. they slow it down c. they have no effect on the speed of a reaction 4. during a chemical reaction, an enzyme is used up so that it can only be used one time. a. true b. false 5. which of the following results from a chemical reaction that is catalyzed by an enzymes? a. active site b. product c. substrate d. coenzyme
Answers: 3
Biology, 21.06.2019 21:30
When explaining dominant and recessive traits to a younger family member, they respond, "well chances are i can probably taste ptc, since dominant traits are more common." how might you address this misconception?
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Biology, 21.06.2019 23:30
New york city has 2,181 inhabitants per square mile. the state of alaska has 1.03 inhabitants per square mile. ecologists would say alaska has a low exponential growth population density birth rate carrying capacity
Answers: 1
Which best describe the isovolumetric contraction phase of the cardiac cycle? Which best describe th...
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