Ques: Answer the following question given this paragraph: Vertebrates have a closed circulatory system with a heart. Blood is completely contained within blood vessels that carry the blood throughout the body. The heart is divided into chambers that work together to pump blood. There are between two and four chambers in the vertebrate heart. With more chambers, there is more oxygen in the blood and more vigorous pumping action. Q: Leaves respond to these environmental stimuli by producing less what? Choices: - oxygen - carbonate - energy - chlorophyll A:
Ans: chlorophyll

Ques: Answer the following question given this paragraph: hollow, sac-like organ that stores urine until it is excreted from the body. Q: What is the hollow sac like organ that stores urine until it is excreted? Choices: - kidney - ureter - tumor - bladder A:
Ans: bladder

Ques: Answer the following question given this paragraph: Amines are capable of hydrogen bonding though their boiling points are generally a bit lower than the corresponding alcohol. Methylamine and ethylamine are gases at room temperature, while larger amines are liquids. As with other organic compounds that form hydrogen bonds, water solubility is reflected in the length of the carbon chains. Smaller amines are soluble, while larger ones are less soluble. Q: As with other organic compounds that form hydrogen bonds, water solubility of amines is reflected in the length of what? Choices: - hydrocarbon bonds - complex carbohydrates - nuclei chains - carbon chains A:
Ans: carbon chains

Ques: Answer the following question given this paragraph: There are approximately 7 billion humans on the planet. How long would it take some bacteria to make 7 billion copies of themselves?. Q: What is the approximate population on the earth? Choices: - 9 trillion - 7.3 billion - 41 billion - 7 billion A:
Ans:
7 billion