Answer Choices
A large insect’s second contact with the plant’s trigger hairs results in a total calcium ion concentration above the trap’s threshold.
A large insect makes contact with a second trigger hair after a period of inactivity during which calcium ion concentrations have diminished appreciably.
A large insect’s contact with the plant’s trigger hairs causes calcium channels to open in the trap.
A large insect’s contact with a second trigger hair occurs within ten seconds of its contact with the first trigger hair.
Explanation for Question 48 From the Reading Section on the Official Sat Practice Test 8
Okay, so this isn't really one where you can look into the passage to 2 find the answer. You're probably better off just relying on your memory and a 3 good reading of the passage. So it says which twists describes a scenario in 4 which Hodak and see Evers model. Well, 5 you might want to look back, just remind yourself what sea Evers model was. 6 Um, so where is holding and CFO's model? 7 Let's see. Okay. Here's Hodak basically 8 they say in their studies, they discover that touching a trigger here on the 9 Venus flytrap causes an electric action potential, 10 um, that induces the calcium channels. 11 Okay. So their, their model was the one about calcium. 12 Basically you cause an electric action potential. 13 When you touch it, trigger here, which causes calcium channels to open, 14 and you need to hit another trigger hair to get the calcium channels, 15 to be high enough for everything to get triggered. 16 Um, if you don't touch another one in time and the memories loss in 17 your basically your calcium channels, aren't able to open. 18 Um, so which choice best describes a scenario in which Hoda conceivers model 19 predicts that the Venus flytrap will not close. 20 Okay. So a, a large insects, 21 um, second contact with the plants, trigger hair results in total calcium ion region. 22 No, if you have enough calcium, it's going to open be a large insect 23 makes contact with the second trigger here after a period of inactivity during which 24 calcium ion stations have dimini...