Answer Choices
It reduces compounds that lead to blood clots.
It stems from a genetic mutation that is rare in humans.
It is a sequence of DNA known as a promoter.
It occurs naturally in goats’ mammary glands.
Explanation for Question 27 From the Reading Section on the Official Sat Practice Test 4
Question 27 says according to the passage, 2 which of the following is true of antithrombin. 3 So since this question starts off with the phrase, 4 according to the passage, we know that the answer is going to come pretty 5 directly from some texts evidence. So let's look back in the passage and see 6 what the author has to say about antithrombin. 7 We find it in this third paragraph here, starting in line 38, 8 it says Actron is antithrombin an anticoagulant that can be used to prevent life-threatening 9 blood clots. So what that sentence is saying is just that it helps your 10 blood to not clot. And then it goes on to say the compound made 11 by our liver cells plays a key role in keeping our bodies clot free. 12 It acts as a molecular bouncer sidling up to clot, 13 forming compounds and escorting them out of the bloodstream. 14 So that describes how it functions. 15 And this phrase here sidling up to just means 16 like going up to, so it goes up to clot, 17 forming compounds. If you imagine them as like little people, 18 you have the Actron going up to the clot forming compounds and just taking 19 them out of the blood. So I guess that's why they use the little 20 analogy of being a bouncer here. So if we look through the answer 21 choices, this gives us a pretty clear idea of what, 22 um, antithrombin is. 23 So answer choice a says it reduces compounds that lead to blood clots. 24 So that's probably correct here, 25 right? It walks up to the blood clots and it escorts the...