ATI TEAS 7
ATI TEAS Science Questions
1. Anya was paid by Company X to analyze dwindling honeybee populations in the Southwest. After measuring hive populations over several months, she noticed no patterns in the geographic distributions of the deaths after comparisons with local maps of interest. This supported her hypothesis, so she took samples of the honey and the bees from the hives and performed dozens of dissections to confirm her suspicions. Which of the following is the most likely hypothesis upon which this research was performed?
- A. Honeybees are being killed off, and their hives are destroyed by other extremely aggressive species of bees from the South.
- B. Honeybees are contracting parasites in large droves.
- C. Honeybees are so sensitive to certain pesticides that they die on contact.
- D. Honeybees die in larger numbers around cell phone towers.
Correct answer: B
Rationale: The most likely hypothesis based on the information provided is that honeybees are contracting parasites in large droves. Anya observed no geographic patterns in hive deaths and proceeded to analyze honey and bees for further investigation. This suggests that she suspected a widespread issue affecting multiple hives simultaneously, consistent with a scenario where honeybees are being infected by parasites in high numbers, leading to dwindling populations across different locations. The other choices can be eliminated because there is no mention of aggressive species of bees from the South, no evidence pointing to pesticide sensitivity as the cause, and no indication of a correlation with cell phone towers in the information provided.
2. Which blood vessels are responsible for carrying oxygenated blood away from the heart to the rest of the body?
- A. Veins
- B. Arteries
- C. Capillaries
- D. Venules
Correct answer: B
Rationale: Arteries are the blood vessels responsible for carrying oxygenated blood away from the heart to the rest of the body. Their thick, muscular walls allow them to withstand high pressure and efficiently transport blood to various tissues and organs throughout the body. Veins (choice A) carry deoxygenated blood back to the heart, capillaries (choice C) facilitate the exchange of nutrients and waste products between the blood and tissues, and venules (choice D) are small blood vessels that collect blood from the capillaries and gradually converge into veins.
3. The endocrine system communicates through chemical messengers called:
- A. Enzymes
- B. Hormones
- C. Antibodies
- D. Neurons
Correct answer: B
Rationale: The correct answer is B: Hormones. The endocrine system communicates through hormones, which are chemical messengers produced by glands and released into the bloodstream to target specific cells or organs in the body. Enzymes are biological molecules that catalyze biochemical reactions, antibodies are part of the immune system, and neurons are cells that transmit nerve impulses. In this context, enzymes, antibodies, and neurons do not play roles in the endocrine system's communication process, making them incorrect choices.
4. What are the seven components of the digestive system?
- A. Mouth, esophagus, stomach, small intestine, large intestine, liver, pancreas
- B. Mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum
- C. Esophagus, stomach, liver, pancreas, small intestine, large intestine, rectum
- D. Pharynx, stomach, liver, pancreas, small intestine, large intestine, rectum
Correct answer: B
Rationale: The correct answer is B. The seven components of the digestive system are the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and rectum. The mouth begins the process of digestion by chewing and mixing food with saliva. The pharynx serves as a passageway for food and air. The esophagus transports food from the mouth to the stomach. The stomach aids in digestion and acts as a temporary storage site. The small intestine is where most of the digestion and absorption of nutrients occur. The large intestine absorbs water and salts, forming feces. The rectum stores feces until they are eliminated through the anus. The other choices are incorrect as they do not list all seven essential components of the digestive system.
5. Which property of a wave remains constant when it crosses a boundary between two different media?
- A. Frequency
- B. Wavelength
- C. Amplitude
- D. Speed
Correct answer: D
Rationale: When a wave crosses a boundary between two different media, its speed is the property that remains constant. This is due to the principle of conservation of energy. While the frequency and wavelength of a wave may change as it moves from one medium to another, the speed of the wave remains constant. This phenomenon is a result of the wave adjusting its frequency and wavelength to maintain a consistent speed in different media. Therefore, choices A, B, and C are incorrect. Frequency and wavelength may change when a wave moves across media, and amplitude may also be affected by the medium, but the speed of the wave will remain constant.
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