Question: 1 of 50
Which of the following are the two major parts of the nervous system?
• Autonomic nervous system and somatic nervous
... [Show More] system
• Autonomic nervous system and central nervous system
• Peripheral nervous system and central nervous system
• Peripheral nervous system and somatic nervous system
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Question: 2 of 50
Which of the following substances is responsible for donating H+ ions to act as a buffer when blood pH rises?
• Carbon dioxide
• Carbon monoxide
• Oxygen
• Carbonic acid
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Question: 3 of 50
Which of the following substances protects the skin from ultraviolet radiation?
• Keratin
• Sebum
• Perspiration
• Melanin
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Question: 4 of 50
Which of the following describes the function of the highlighted structure in this image?
• It contains vocal cords essential for speech.
• It is a tube that connects the larynx and pharynx to the lungs.
• It transfers oxygen from the air to red blood cells.
• It filters, warms, and moistens air as it enters the body.
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Question: 5 of 50
The pleura is a connective tissue sheath that covers which of the following organs?
• Heart
• Liver
• Spleen
• Lung
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Question: 6 of 50
In a phase diagram, which of the following is the term used for a substance held at a temperature and pressure where the solid, liquid, and gaseous states of a substance exist simultaneously?
• Absolute zero
• Critical point
• Triple point
• Critical temperature
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Question: 7 of 50
In a certain plant, red flowers are dominant over white flowers. A plant heterozygous for red flowers and a plant with white flowers are crossed. Which of the following is the expected proportion of phenotypes in the next generation?
• 1 red, 3 white
• 2 red, 2 white
• 3 red, 1 white
• 4 red, 0 white
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