Daily Practice Questions

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

📝 Questions

🧬 AP Biology Medium
The relationship between Fordinae and the rose bush is best described by which of the following?
  1. A. intraspecies competition
  2. B. interspecies competition
  3. C. mutualism
  4. D. parasitism ✓
Explanation: Both Fordinae species are parasites on the host plant because they obtain nutrition from the host plant but provide no benefit to the host plant. Choices (A), (B), and (C) are incorrect, as explained in the answer explanation to Question 57.
📊 SAT Math Easy
Which choice best states the main idea of the text? In the 1954 U.S. Supreme Court case Brown v. Board of Education , American schools were legally desegregated. In making this decision, the court observed that minority students at segregated schools were usually educationally disadvantaged relative to students at integrated schools.
  1. A. Recent events have demonstrated the inability of Andrew Johnson to effectively lead the United States.
  2. B. The march toward equality is inevitable and leaders should embrace, rather than fight, the coming changes. ✓
  3. C. Those who stand in the way of social progress should instead redouble their efforts to maintain the status quo.
  4. D. The examples of harmonious animals in nature should inspire humans to create a more just society.
Explanation: The text describes a landmark Supreme Court decision that legally ended school segregation by recognizing the educational disadvantages faced by minority students, which directly supports the idea that social progress toward equality is inevitable and should be embraced. Choices (A), (C), and (D) are incorrect because they reference unrelated historical figures, advocate for maintaining the status quo, or use irrelevant animal analogies, none of which align with the text's focus on judicial action driving civil rights advancements.
⚛️ AP Physics C Medium
If an object is moving with a constant acceleration, which of the following is true?
  1. A. It must be under the influence of a single force equal to m a .
  2. B. In each second, its speed changes by an amount equal in value to a .
  3. C. Its kinetic energy increases at a rate equal to its speed multiplied by m a .
  4. D. In each second, its momentum changes by an amount equal in value to m a . ✓
  5. E. The object moves along a parabolic path.
Explanation: According to Newton's Second Law ($F_{net} = ma$), the net force acting on an object equals the rate of change of its momentum; therefore, over any time interval $\Delta t$, the change in momentum ($\Delta p$) is given by $F_{net}\Delta t = (ma)\Delta t$. If we consider a one-second interval where $\Delta t = 1 \text{ s}$, the magnitude of the momentum change is exactly $ma$. Choice (B) is incorrect because constant acceleration refers to velocity changing by $a$ each second only if the motion is in a straight line; if the object curves, its speed might not change by that amount even though its velocity does.
📝 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 Medium
Use the declarations below for Questions 16 and 17. Here is a program that prints the volume of a solid:
  1. A. It will output the volume of the sphere or box, as intended. ✓
  2. B. It will output the volume of the default Solid s , which is neither a sphere nor a box.
  3. C. It will randomly print the volume of a sphere or a box.
  4. D. A run-time error will occur because it is not specified whether s is a sphere or a box.
  5. E. A run-time error will occur because of parameter type mismatch in the method call printVolume(sol) .
Explanation: This is an example of polymorphism: The correct volume method is selected at run time. The parameter expected for printVolume is a Solid reference, which is what it gets in main() . The reference sol will refer either to a Sphere or a RectangularPrism object depending on the outcome of the coin flip. Since a Sphere is a Solid and a RectangularPrism is a Solid , there will be no type mismatch when these are the actual parameters in the printVolume method. (Note: The Math.random method is discussed in .)
🎓 GRE Prep Medium
In 2004, only 10,000 residents of town W lived in homes with efficient appliances and good maintenance. How many gallons per day were used by these residents for the three daily household purposes requiring the most water?
  1. A. 110,000
  2. B. 160,000 ✓
  3. C. 270,000
  4. D. 300,000
  5. E. 460,000
Explanation: To find the total daily water usage, multiply the number of residents (10,000) by the average daily consumption per household for the three most water-intensive purposes, which is 16 gallons based on the data provided in the passage. This calculation ($10,000 \times 16$) yields 160,000 gallons, making choice (B) the correct answer. The other options likely result from misreading the per-household usage rate or failing to account for the specific subset of residents living in homes with efficient appliances and good maintenance.

💡 Study Tips

💚 Sleep is a study strategy

Your brain consolidates memories during sleep. Reviewing material before bed and getting a full night's rest is more effective than staying up late to study. Aim for 8-10 hours before exam day.

📖 Mix up your practice problems

Interleaving different problem types in a single study session (instead of doing all of one type first) builds your ability to identify which strategy to apply — a critical skill on test day.

← Previous Day Next Day →

Want personalized practice?

Sign up for free to get adaptive questions tailored to your skill level.

Get Started Free