ATI TEAS 7
Biology
1. What is the function of ribosomal RNA (rRNA)?
- A. Carries amino acids to the ribosomes
- B. Reads th(a) Carries amino acids to the ribosomes: This is the function of transfer RNA (tRNA), not ribosomal RNA. (b) Reads the genetic code on mRNA: This is the function of the ribosomes as a whole, not just the ribosomal RNA. (d) Controls the rate of protein synthesis: This is a more complex process involving various factors, not solely ribosomal RNA. e genetic code on mRNA
- C. Forms the structural framework of ribosomes
- D. Controls the rate of protein synthesis
Correct answer: C
Rationale: Rationale: Ribosomal RNA (rRNA) plays a crucial role in forming the structural framework of ribosomes, which are the cellular organelles responsible for protein synthesis. Ribosomes consist of both protein and rRNA components, with rRNA providing the structural support necessary for the ribosome to function properly. This structural framework allows the ribosome to interact with messenger RNA (mRNA) and transfer RNA (tRNA) during the process of translation, where the genetic information encoded in mRNA is used to assemble proteins from amino acids. Therefore, the primary function of rRNA is to contribute to the structure and function of ribosomes, rather than directly carrying amino acids, reading the genetic code, or controlling the rate of protein synthesis.
2. What property of a wave is responsible for determining its energy?
- A. Amplitude
- B. Wavelength
- C. Frequency
- D. Velocity
Correct answer: a
Rationale: The amplitude of a wave determines its energy, with higher amplitudes corresponding to higher energy levels.
3. What is the name of the tough, fibrous connective tissue that attaches muscle to bone?
- A. Fascia
- B. Perimysium
- C. Tendon
- D. Ligament
Correct answer: C
Rationale: The correct answer is C: Tendon. A tendon is the tough, fibrous connective tissue that attaches muscle to bone. Fascia (A) is a connective tissue that surrounds muscles, while perimysium (B) is the connective tissue surrounding bundles of muscle fibers. Ligaments (D) are tough bands of tissue that connect bones to other bones. Understanding the function and structure of tendons is crucial for biomechanics and movement as they play a vital role in transmitting forces from muscles to bones, allowing for movement and stability in the body.
4. Which of the following is the main function of the pancreas?
- A. To store food and break it down into smaller pieces
- B. To absorb nutrients into the bloodstream
- C. To produce enzymes that help digest food
- D. To regulate blood sugar levels
Correct answer: C
Rationale: Rationale: The pancreas is a vital organ in the digestive system that produces digestive enzymes such as amylase, lipase, and proteases. These enzymes are released into the small intestine to help break down carbohydrates, fats, and proteins in food, aiding in the digestion and absorption of nutrients. Options A and B are incorrect because the pancreas is not involved in storing or absorbing nutrients. Option D is partially correct as the pancreas also plays a role in regulating blood sugar levels by producing insulin and glucagon, but its primary function is to produce digestive enzymes.
5. What property of a substance remains constant regardless of the amount of the substance present?
- A. Mass
- B. Weight
- C. Density
- D. Volume
Correct answer: c
Rationale: Density remains constant for a specific substance regardless of the quantity present. It's the mass per unit volume and remains the same for a substance.
6. The final sentence suggests that public discourse about AI should focus on
- A. Celebrating the achievements of AI and promoting its widespread adoption in all sectors.
- B. Criticizing the ethical shortcomings of existing AI systems and demanding stricter regulations.
- C. Engaging in open and informed discussions about the potential benefits, risks, and responsible development of AI.
- D. Focusing solely on the technical challenges of AI development and leaving ethical considerations to experts.
Correct answer: C
Rationale: The emphasis on "ongoing public discourse" and "the future of AI in society" suggests a call for open discussions and collective responsibility, aligning with C.
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