Which of the following is an accurate description of hydrocarbons?
A. Most of them contain phosphorus. ?B. They are nonpolar molecules. ?C. Most of them contain sulfur. ?D. They are polar molecules.
B
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One of the major functions of the large intestine is to
A. convert chyme to feces. B. regulate the release of bile. C. produce vitamin C. D. break down hemoglobin to release bilirubin.
In a physiology lab, the students designed an experiment to illustrate how the heart responds to changes in blood pressure. Everyone relaxed and then did a headstand. Which of the following observations are consistent with the change in the function of their hearts?
A. Decreased heart rate B. Increased stroke volume C. Increased heart rate D. Decreased stroke volume E. Both decreased heart rate and increased stroke volume
A 23-year-old male was riding his road bike in 100-degree heat, when he suddenly became nauseated and weak. He called 911 from his cell phone. When the ambulance came, the paramedics started intravenous therapy for severe dehydration
Explain the critical role of water to maintain homeostasis. What will be an ideal response
When an enzyme catalyzes a chemical reaction, ________.
the enzyme binds to the substrate's active site the enzyme's active site binds to the product amino acids in the substrate allow for interaction with the product amino acids in the enzyme's active site interact with substrate molecules to create a product