ATI TEAS 7
Biology
1. What is the process of converting glucose into ATP, the cell's primary energy currency, called?
- A. Cellular respiration
- B. Fermentation
- C. Photosynthesis
- D. Hydrolysis
Correct answer: A
Rationale: Rationale: A) Cellular respiration is the process by which cells convert glucose into ATP, the primary energy currency of the cell. This process involves a series of biochemical reactions that occur in the mitochondria of eukaryotic cells or the cytoplasm of prokaryotic cells. Through cellular respiration, the energy stored in glucose molecules is gradually released and captured in the form of ATP. B) Fermentation is an anaerobic process that occurs in the absence of oxygen. It involves the partial breakdown of glucose to produce ATP and end products such as lactic acid or ethanol. While fermentation can generate ATP, it is less efficient than cellular respiration in terms of energy production. C) Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. This process occurs in chloroplasts and is the opposite of cellular respiration. While photosynthesis produces glucose,
2. What property of a substance refers to its ability to undergo a chemical change and form new substances with different properties?
- A. Density
- B. Mass
- C. Reactivity
- D. Volume
Correct answer: c
Rationale: Reactivity refers to a substance's ability to undergo a chemical change or reaction, forming new substances with different properties.
3. What happens to the force of gravity between two objects when the distance between them is doubled?
- A. ) The force increases by a factor of 2
- B. The force increases by a factor of 4
- C. The force decreases by a factor of 2
- D. The force decreases by a factor of 4
Correct answer: d
Rationale: According to the inverse square law of gravity, the force of gravity decreases by a factor of 4 when the distance between two objects is doubled.
4. A spring is stretched and released, causing an object attached to it to oscillate. What determines the frequency of the oscillations?
- A. The mass of the object
- B. The stiffness of the spring
- C. The initial displacement of the object
- D. All of the above
Correct answer: B
Rationale: The stiffness of the spring. Frequency depends on the spring constant and the mass, but the mass term cancels out in the formula for simple harmonic motion, leaving only the spring constant.
5. Describe the ethical considerations surrounding the potential use of CRISPR-Cas9 technology in humans.
- A. Concerns about unintended consequences on the genome and potential off-target effects.
- B. Debates on modifying the human germline and potential eugenic implications.
- C. Accessibility and affordability of the technology, ensuring equitable access to benefits.
- D. Risks associated with CRISPR-Cas9 editing germline cells and potential long-term impacts.
Correct answer: B
Rationale: CRISPR-Cas9's ability to precisely edit germline cells raises ethical dilemmas about modifying the human gene pool. This includes concerns about eugenics, unintended consequences, and the long-term impact on future generations.
6. What does the term "solute" refer to in a solution?
- A. The substance present in the largest amount
- B. The substance that dissolves in the solvent
- C. The liquid portion of the solution
- D. The temperature at which the solution freezes
Correct answer: B
Rationale: The solute is the substance that dissolves in the solvent to form a solution. The other choices do not accurately describe the solute.
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