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Stormy
Biology
Is Sirius B brighter or dimmer than the sun?
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Baron Trevino
Biology
The chart below shows examples from two groups of organisms, multicellular and one-celled. the tissues and organs in group a perform functions that are
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Bucky
Biology
A patient has very low levels of steroid hormones in his body, and his doctor thinks it is due to poor nutrition. How could the patient alter his diet to address this deficiency?
Consume butter and oils. Restrict butter and oils. Consume pasta and bread. Restrict pasta and bread.
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Paola Sutton
Biology
True or false? a woman's behavior can often determine both whether or not she gets a chronic disease, as well as the chronic disease's course of infection.
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Kaia
Biology
What role do insulator sequences play in the regulation of eukaryotic transcription?
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Alison Sherman
Biology
A tube worm is a creature that lives within the dark, hot, and mineral-rich conditions of a hydrothermal vent. Deep-sea bacteria use chemosynthesis to convert energy into a chemical form. Of the follow, which is the most likely way that a tubeworm living in a hydrothermal vent environment acquires its energy?
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Tommy Greene
Biology
What type of mutation always creates a stop codon?
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Pop Tart
Biology
Describe what is happening to the chromosomes during each sub-phase of Meiosis I and Meiosis II.
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Lauren Montoya
Biology
What accounts for genetic biodiversity existing in modern multicellular organisms?
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Andrew Chen
Biology
Torri and Tamara are both performing scientific investigations on the learning capabilities of mice. In Torri's experiment, she sets up two knobs in a cage with a mouse. When the mouse touches the knob on the left, it receives a small shock. When it touches the knob on the right, it receives a food reward. After several attempts, the mouse learns to only touch the knob on the right. Torri concludes that mice are capable of learning. In Tamara's experiment, she also sets up two knobs in a cage with a mouse. She constantly alternates which knob causes the mouse to get shocked, and which knob gives the mouse a food reward. The mouse does not ever learn to reliably touch one knob or the other. Tamara concludes that mice are incapable of learning. Which of the following is true about the evidence gathered in Torri and Tamara's experiments?
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Guest
Biology
What did Chargaff discover while studying bases in the DNA of organisms?
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Jamarion Yoder
Biology
Russia's system of government and identify its basic structure.
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Kassandra Cuevas
Biology
Which statement about the light microscope is correct?
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Elena Sherman
Biology
How does the body use cholesterol for digestion and bile acids?
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Buchanan
Biology
What type of currently available car engine is the only one with zero emissions?
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