Daily Practice Questions

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

📝 Questions

🧬 AP Biology Medium
A mutation in mitochondrial DNA causes the creation of a pore in the mitochondrial membrane through which protons can freely pass. Which of the following processes would most likely be disrupted by this mutation?
  1. A. glycolysis
  2. B. Krebs cycle
  3. C. chemiosmosis ✓
  4. D. fermentation
Explanation: This mutation disrupts chemiosmosis because it eliminates the proton gradient across the inner mitochondrial membrane, which is essential for ATP synthase to generate ATP. While glycolysis and the Krebs cycle can continue producing NADH and FADH₂, these processes cannot effectively drive oxidative phosphorylation without the electrochemical potential that chemiosmosis relies on. Fermentation is not directly dependent on this specific mitochondrial gradient, making chemiosmosis the primary process affected.
📝 ACT Prep Medium
Should the writer add this sentence here?
  1. A. Yes, because it explains why the author felt so insecure about her difficulties training her dog.
  2. B. Yes, because it provides an important detail about another breed of dog.
  3. C. No, because it doesn't explain how Blizzard was trained.
  4. D. No, because it distracts the reader from the main point of this paragraph. ✓
Explanation: Whenever a strategy question asks if you should add or delete new text, evaluate the reasons in the answer choices carefully. The reason should correctly explain the purpose of the selected text. Here, choice (D) is correct because there is no reason to add text that is irrelevant to the topic.
💻 AP Computer Science A Hard
A square matrix is declared as
  1. A. Places value in corners of the rectangle with corners ( top, left ) and ( bottom, right )
  2. B. Places value in the diagonals of the square with corners ( top, left ) and ( bottom, right )
  3. C. Places value in each element of the rectangle with corners ( top, left ) and ( bottom, right )
  4. D. Places value in each element of the border of the rectangle with corners ( top, left ) and ( bottom, right ) ✓
  5. E. Places value in the topmost and bottommost rows of the rectangle with corners ( top, left ) and ( bottom, right )
Explanation: The first for loop places value in the top and bottom rows of the defined rectangle. The second for loop fills in the remaining border elements on the sides. Note that the top + 1 and bottom - 1 initializer and terminating conditions avoid filling in the corner elements twice.
📖 SAT Reading & Writing Medium
Which choice completes the text with the most logical and precise word or phrase? Born in 1644 during the Tokugawa period (also known as the Edo period), Matsuo Bashō became interested in poetry and literature after going to Ueno Castle and being in the ________ the lord’s son.
  1. A. manufacturing
  2. B. fabricating
  3. C. escalating
  4. D. building ✓
Explanation: The phrase "building the lord's son" correctly completes the text because it logically describes the act of constructing or raising a child, which fits the context of a young poet being nurtured by a noble family. The other options are incorrect: "manufacturing" and "fabricating" typically refer to producing goods rather than people, while "escalating" means increasing in intensity and does not make sense in this context. This question tests your ability to select precise verbs that accurately describe human relationships and developmental processes.
✍️ AP English Language Easy
In lines 2–3 (“Everyone knows . . . dreams of others are”), the speaker’s rhetorical intent is primarily to
  1. A. please the members of audience by confiding in them.
  2. B. impress the audience with the depth of his understanding of the subject.
  3. C. utter a controversial truth for the audience to ponder.
  4. D. demonstrate that he has given the matter of dreams a great deal of thought.
  5. E. engage the audience by stating a view with which they are likely to agree. ✓
Explanation: 2. (E) It may not be universal, but the speaker’s view of dreams is not uncommon. One’s own dreams are generally more interesting to ourselves than are the dreams of others.
🎓 GRE Prep Easy
What is the value of x in the equation 2^2 + 2^3 = 2^5?
  1. A. True
  2. B. False ✓
  3. C. Cannot be determined
  4. D. None of the above
Explanation: The equation is 2^2 + 2^3 = 4 + 8 = 12, while 2^5 = 32. Since 12 ≠ 32, the statement '2^2 + 2^3 = 2^5' is false. Therefore, x (implicitly representing the truth value of the equation) is False.

💡 Study Tips

📖 Take handwritten notes

Writing notes by hand (rather than typing) forces you to process and summarize information in your own words. This can help you build deeper conceptual understanding compared to passively copying text.

📖 Connect new concepts to what you already know

Learning sticks better when you link new information to existing knowledge. Ask yourself: 'What does this remind me of?' or 'How does this relate to what I learned last week?'

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