Free VCE ATAR Questions and Answers — Questions and Answers
Question 1: Which of the following best describes the purpose of a topic sentence in an essay paragraph?
- To summarize the entire essay
- To provide evidence from the text
- To introduce the main idea of the paragraph (Correct answer)
- To restate the thesis statement
Correct answer: To introduce the main idea of the paragraph
A topic sentence serves as the main idea or controlling statement for a single paragraph in an essay. It clearly introduces what the paragraph will be about, guiding the reader and setting the stage for the specific evidence, examples, and analysis that will follow within that paragraph. It helps maintain focus and coherence throughout the essay.
Question 2: The function 𝑓(𝑥)=2𝑒*+5 is given. What is the derivative of 𝑓(𝑥)?
- f ′(𝑥)=2e* (Correct answer)
- f ′(𝑥)=2xe*−1
- f′(𝑥)=2e*+5
- f ′(𝑥)=2𝑥e*
Correct answer: f ′(𝑥)=2e*
The derivative of the exponential function e^x is e^x itself. Therefore, for the function 𝑓(𝑥)=2𝑒^x+5, the derivative of the term 2e^x is 2e^x. The derivative of a constant term (5) is always 0. Combining these, the correct derivative of the function is f ′(𝑥)=2e^x.
Question 3: Which of the following represents the correct electron configuration for a calcium ion (Ca²⁺)?
- 1s²2s²2p⁶3s²3p⁶4s²
- 1s²2s²2p⁶3s²3p⁶ (Correct answer)
- 1s²2s²2p⁶3s²3p⁴
- 1s²2s²2p⁶3s²3p⁶4s¹
Correct answer: 1s²2s²2p⁶3s²3p⁶
A neutral calcium atom (Ca) has 20 electrons, with an electron configuration of 1s²2s²2p⁶3s²3p⁶4s². When calcium forms a Ca²⁺ ion, it loses its two outermost electrons from the 4s orbital. This results in the ion achieving a stable electron configuration identical to that of the noble gas Argon, which is 1s²2s²2p⁶3s²3p⁶.
Question 4: Which type of macromolecule serves as the primary source of energy for most cellular processes?
- Proteins
- Lipids
- Carbohydrates (Correct answer)
- Nucleic acids
Correct answer: Carbohydrates
Carbohydrates, such as glucose and starch, are the most readily available and primary source of energy for most cellular processes. They are efficiently broken down into glucose, which cells then use in cellular respiration to produce ATP, the main energy currency. While proteins and lipids also provide energy, carbohydrates are typically utilized first for immediate energy needs.
Question 5: Which part of the brain is primarily responsible for regulating emotions such as fear and aggression?
- Hippocampus
- Amygdala (Correct answer)
- Cerebellum
- Hypothalamus
Correct answer: Amygdala
The amygdala is a pair of almond-shaped structures located deep within the temporal lobes and is a key component of the limbic system. It plays a critical role in processing and regulating emotions, particularly fear, anger, and pleasure. It is also heavily involved in the formation and storage of memories associated with emotional events.
Free VCE ATAR Questions and Answers
Which of the following best describes the purpose of a topic sentence in an essay paragraph?