which of the following structures in the cell is responsible for producing atp

ATI TEAS 7

TEAS Practice Test Science

1. Which of the following structures in the cell is responsible for producing ATP?

A. Ribosome
B. Nucleus
C. Mitochondria
D. Endoplasmic reticulum

Correct answer: C

Rationale: The correct answer is C, Mitochondria. Mitochondria are known as the powerhouse of the cell and are responsible for producing ATP, the primary energy currency of the cell through cellular respiration. Ribosomes (Choice A) are involved in protein synthesis, the nucleus (Choice B) stores genetic material and controls cell activities, and the endoplasmic reticulum (Choice D) plays a role in protein synthesis, lipid metabolism, and detoxification, but none of these structures are directly responsible for producing ATP.

2. The Morgan family lives at 5487 South Elm Street. On which day of the week will they be able to water their lawn?

A. Tuesday
B. Wednesday
C. Thursday
D. Saturday

Correct answer: C

Rationale: Based on the provided water schedule for addresses in the town of Audley, odd-numbered addresses ending in 7 and 3, like 5487 South Elm Street, are allowed to water their lawns on Thursdays. Therefore, the Morgan family will be able to water their lawn on Thursday. Choice A (Tuesday), Choice B (Wednesday), and Choice D (Saturday) are incorrect as they do not align with the watering schedule for odd-numbered addresses as per the town's guidelines.

3. Why is it essential to formulate a hypothesis before conducting an experiment?

A. It will increase the investigator's reputation and prestige if their hypothesis is proven correct.
B. The hypothesis helps guide the investigation by suggesting what the investigator should be looking for.
C. Formulating a hypothesis shows potential sources of funding that the investigator has given some thought to the experiment.
D. The hypothesis directs which results to keep and publish; results that do not match the hypothesis should be discarded.

Correct answer: B

Rationale: Formulating a hypothesis before conducting an experiment is crucial because it helps guide the investigation by suggesting what the investigator should be looking for. A hypothesis serves as a prediction or an educated guess about what might happen in the experiment, providing a clear direction for the research process. It allows the investigator to focus on specific variables and outcomes, making the experiment more organized and effective. Choice A is incorrect because the primary purpose of a hypothesis is not to boost an investigator's reputation but to guide the research. Choice C is incorrect as formulating a hypothesis is not primarily about impressing funders but about setting a clear direction for the study. Choice D is incorrect because the hypothesis is not meant to dictate which results to keep based on preconceived notions but to guide the investigation and allow for unbiased interpretation of results.

4. Where was the metric system developed?

A. Germany
B. France
C. Italy
D. Spain

Correct answer: B

Rationale: The metric system was developed in France during the 1790s as a standardized system of measurement. This choice is correct because the metric system originated in France. Germany, Italy, and Spain did not play a role in the development of the metric system, making choices A, C, and D incorrect.

5. What is 0.1 mg to mcg?

A. 100 mcg
B. 10 mcg
C. 1000 mcg
D. 1 mcg

Correct answer: A

Rationale: To convert milligrams to micrograms, you need to multiply by 1000. Therefore, 0.1 mg is equal to 100 mcg. This conversion is commonly used in medical calculations. Choice B (10 mcg) is incorrect because it would be the conversion from milligrams to micrograms if multiplied by 100, not 10. Choice C (1000 mcg) is incorrect as it would be the conversion from grams to micrograms if multiplied by 1000. Choice D (1 mcg) is incorrect as it represents the original unit without conversion.