Daily Practice Questions

6 questions across multiple subjects, with detailed explanations and study tips.

📝 Questions

🎓 GRE Prep Easy
For all positive integer values of x, #x = 2–x. Quantity A: #8 Quantity B: #4
  1. A. Quantity A is greater.
  2. B. Quantity B is greater. ✓
  3. C. The two quantities are equal.
  4. D. The relationship cannot be determined from the information given.
Explanation: Given #x = 2 − x, compute Quantity A: #8 = 2 − 8 = −6. Quantity B: #4 = 2 − 4 = −2. Since −2 > −6, Quantity B is greater.
🧬 AP Biology Medium
In a follow-up experiment, the student placed the enzyme in a boiling water bath for one minute before saturating the paper disks with the enzyme. Which of the following best predicts the expected results?
  1. A. The time required for the paper disks to float will decrease because the heat will cause a faster breakdown of hydrogen peroxide.
  2. B. The time required for the paper disks to float will not change because heating the enzyme does not change the hydrogen peroxide.
  3. C. The time required for the paper disks to float will increase because boiling will denature the enzyme. ✓
  4. D. The time required for the paper disks to float will increase because all enzymes are less effective at higher temperatures.
Explanation: Boiling denatures most enzymes, irreversibly changing their shape so they do not function. Choice (A) is incorrect because the enzyme is exposed to the boiling water bath, not the hydrogen peroxide. Boiling will change the time required for the paper disk to float, so choice (B) is incorrect. Not all enzymes are less effective at higher temperatures, so choice (D) is incorrect.
⚛️ AP Physics C Easy
A baseball is falling toward Earth. If a _{b} is the acceleration of the baseball due to the gravitational pull of Earth and a _{e} is the acceleration of Earth due to the baseball, which of the following is true?
  1. A. a _{e} = 0
  2. B. a _{b} = a _{e}
  3. C. a _{b} >> a _{e} , and the accelerations are parallel.
  4. D. a _{e} >> a _{b} , and the accelerations are parallel.
  5. E. a _{b} >> a _{e} , and the accelerations are antiparallel. ✓
Explanation: According to Newton's Third Law, the gravitational force exerted by Earth on the baseball is equal in magnitude and opposite in direction to the force exerted by the baseball on Earth. Since acceleration equals force divided by mass ($a = F/m$), and Earth's mass is vastly larger than the baseball's mass, the baseball experiences a much greater acceleration ($a_b \gg a_e$). Furthermore, because these forces act along the same line but in opposite directions, the resulting accelerations are antiparallel.
📝 ACT Prep Medium
After Adichie won a MacArthur Genius Grant in 2008, she will publish 2 a book of short stories called The Thing Around Your Neck.
  1. A. NO CHANGE
  2. B. published ✓
  3. C. was published
  4. D. publishes
Explanation: The sentence describes a completed action that occurred after a past event ('won a MacArthur Genius Grant in 2008'). Therefore, the simple past tense 'published' is grammatically correct and maintains the sequence of past events.
💻 AP Computer Science A Hard
Which of the following changes should be made so that method findMost will work as intended?
  1. A. Insert the statement count = 1; between Lines 20 and 21.
  2. B. Insert the statement count = 1; between Lines 21 and 22. ✓
  3. C. Insert the statement count = 1; between Lines 16 and 17.
  4. D. Insert the statement count = 0; between Lines 23 and 24.
  5. E. Insert the statement count = 1; between Lines 23 and 24.
Explanation: The count variable must be reset to 1 as soon as index is incremented in the outer while loop, so that when a new run of equal values is found, count starts out as 1 .
📊 SAT Math Medium
Which choice completes the text so that it conforms to the conventions of Standard English? The layperson merely associates Newton with gravity and laws of motion, and Einstein with relativity and mass-energy equivalence, failing to understand the magnitude of __________ contribution.
  1. A. Regardless of what platform they’re on; they are
  2. B. Regardless of what platform their on they are
  3. C. Regardless of what platform they’re on, they are ✓
  4. D. Regardless, of what platform there on their
Explanation: This option uses the correct form of “they’re,” which means “they are.” Also, it puts a comma after the dependent clause that introduces the sentence. Choices (B) and (D) use “their” and “there,” which are incorrect in this context. Choice (A) incorrectly uses a semicolon to provide a break after a dependent clause—there needs to be an independent clause on either side of the semicolon when it is used to break up sentences.

💡 Study Tips

🎯 Use process of elimination on science questions

On AP and standardized science sections, you can often eliminate choices by checking units, order of magnitude, or whether the answer makes physical sense — even before doing the full calculation.

💚 Stay hydrated during study sessions

Even mild dehydration can reduce concentration and short-term memory. Keep a water bottle at your desk and take a sip during each break. Your brain is mostly water — it needs fuel to perform.

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