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7. Cells with similar structures and functions work together to form A. systems. B. organisms. C. organs. D. tissues. User: 8. The purpose of nervous tissue is A. movement. B. protection. C. support. D. communication.
Weegy: The purpose of nervous tissue is: D. communication. User: 9. Which one of the following statements accurately describes a characteristic of red blood cells? A. They transport oxygen to all the cells of the body. B. They lack hemoglobin. C. They're agents of inflammation. D. They're convex disks with a large nucleus. Weegy: The statement that accurately describes a characteristic of red blood cells is: A. They transport oxygen to all the cells of the body. (More)
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Asked 8/21/2013 10:22:36 AM
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10. Jenna says that an example of homeostasis is when body temperature is maintained at about 37° C. Allen says homeostasis is when breathing rate increases along with exercise. Who is correct? A. Only Jenna is correct. B. Both are correct. C. Neither is correct. D. Only Allen is correct.
Weegy: Jenna says that an example of homeostasis is when body temperature is maintained at about 37? C. Allen says homeostasis is when breathing rate increases along with exercise. Who is correct? A. [ Both are correct; both are ways in which the body regulates the internal environment. ] User: 11. Which one of the following components makes up the largest portion of plasma? A. Water B. Wastes C. Salt D. Proteins Weegy: A. Water makes up the largest portion of plasma. Plasma is a yellowish solution consisting of about 91% water. User: 12. One job of the kidneys is to A. regulate the pH of the blood. B. produce urea from amino groups and ammonia. C. destroy old red blood cells. D. increase the salt and water balance in the blood. User: 13. Which one of the following statements is true regarding voluntary and involuntary responses? A. Involuntary responses are part of the autonomic system. B. Voluntary responses originate in the sensory receptors. C. Involuntary responses may include the spinal cord and not the brain. D. Voluntary responses control the activity of glands. Weegy: Involuntary responses are part of the autonomic system.- is true regarding voluntary and involuntary responses. User: 14. Allergies are caused by which of the following? A. Reactions to antigens B. Autoimmune diseases C. Ingesting IgA in breast milk D. Strong toxins in the environment Weegy: Allergies are caused by: REACTIONS TO ANTIGENS. User: 15. In the context of vision, the blind spot is A. an area of the retina where there are no rods or cones. B. an area of the retina where rods and cones are concentrated. C. a nontransparent areas on the cornea. D. a nontransparent area on the lens. Weegy: In the context of vision, the blind spot is: B. an area of the retina where there are no rods or cones. User: 16. The chamber of the heart that receives blood from the pulmonary veins is the A. left ventricle. B. left ... (More)
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Asked 8/21/2013 10:29:03 AM
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2. A source from which organisms generally take elements is called a/an A. food web. B. reservoir. C. biotic community. D. exchange pool.
Weegy: A source from which organisms generally take elements is called a/an . D. exchange pool. User: 3. The life history pattern in which population growth is logistic is called A. equilibrium pattern. B. biotic potential. C. population density. D. opportunistic pattern. Weegy: The life history pattern in which population growth is logistic is called: equilibrium pattern. (More)
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Asked 8/21/2013 10:43:04 AM
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