Answer the following question given this paragraph: In many species, including humans, circadian rhythms are controlled by a tiny structure called the biological clock . This structure is located in a gland at the base of the brain. The biological clock sends signals to the body. The signals cause regular changes in behavior and body processes. The amount of light entering the eyes helps control the biological clock. The clock causes changes that repeat every 24 hours. Q: The amount of what entering the eyes helps control the biological clock? Choices: - air - energy - heat - light A:
light
(Question)
Answer the following question given this paragraph: The thymus is found behind the sternum. The thymus produces hormones referred to as thymosins, which contribute to the development of the immune response in infants. Adipose tissue, or fat tissue, produces the hormone leptin in response to food intake. Leptin produces a feeling of satiety after eating, reducing the urge for further eating. Q: What produces hormones referred to as thymosins, which contribute to the development of the immune response in infants? Choices: - pancreas - heart - receptors - thymus A:
(Answer)
thymus
Ques: Answer the following question given this paragraph: When an ionic compound dissociates in water, water molecules surround each ion and separate it from the rest of the solid. Each ion goes its own way in solution. Saylor URL: http://www. saylor. org/books. Q: When an ionic compound dissociates in water, water molecules surround each ion and separate it from the rest of the what? Choices: - electron shell - mixture - gas - solid A:
Ans: solid
(Q).
Answer the following question given this paragraph: Human beings depend on learned behaviors more than any other species. Think about some of the behaviors you have learned. They might include making a bed, riding a bicycle, using a computer, and playing a sport, to name just a few. You may have learned each of the behaviors in different ways. There are several different ways in which animals learn. They include habituation, observational learning, conditioning, learning through play, and insight learning. Q: Human beings depend on learned behaviors more than any other? Choices: - Organisms - Beings - mammals - species A:
(A).
species
Ques:Answer the following question given this paragraph: There are about 10,000 living species of birds. Almost all of them can fly. Flying birds are classified in 29 orders. Most species belong to the order of perching birds. A few birds are flightless, such as the ostrich and penguin, but they evolved from a flying ancestor. Q: What important and unusual physical property (for birds) do ostriches and penguins share? Choices: - waterproofness - webbed feet - bonelessness - flightlessness A:

Ans:flightlessness
Ques: Answer the following question given this paragraph: Q: First, high temperature denatures proteins and does what to cells? Choices: - finds them - develops them - exposes them - kills them A:
Ans:
kills them