Answer the following question given this paragraph: Q: What do cells secrete that binds to receptors? Choices: - stress - endorphans - proteins - factor A:
factor
(Question)
Answer the following question given this paragraph: Figure 20.19 Power is distributed over large distances at high voltage to reduce power loss in the transmission lines. The voltages generated at the power plant are stepped up by passive devices called transformers (see Transformers) to 330,000 volts (or more in some places worldwide). At the point of use, the transformers reduce the voltage transmitted for safe residential and commercial use. (Credit: GeorgHH, Wikimedia Commons). Q: The voltages generated at a power plant are stepped up by what passive devices, which then reduce voltage to a safe level at the point of use? Choices: - transistors - batteries - capacitors - transformers A:
(Answer)
transformers
Ques: Answer the following question given this paragraph: For decades Pluto was a planet. But even then, scientists knew it was an unusual planet. The other outer planets are all gas giants. Pluto is small, icy and rocky. With a diameter of about 2400 kilometers, it has only about 1/5 the mass of Earth's Moon. The other planets orbit in a plane. Pluto's orbit is tilted. The shape of the orbit is like a long, narrow ellipse. Pluto's orbit is so elliptical that sometimes it is inside the orbit of Neptune. Q: Pluto's orbit is so elliptical that sometimes it is inside the orbit of which planet? Choices: - titan - Mars - Earth - neptune A:
Ans: neptune
(Q).
Answer the following question given this paragraph: Animal-like protists are called protozoa. Protozoa are single-celled eukaryotes that share some traits with animals. Like animals, they can move, and they are heterotrophs . That means they eat things outside of themselves instead of producing their own food. Animal-like protists are very small, measuring only about 0.010.5mm. Animal-like protists include the flagellates, ciliates, and the sporozoans. Q: Animal-like protists are called what? Choices: - bacteria - genus - larvae - protozoa A:
(A).
protozoa
Ques:Answer the following question given this paragraph: Hormones control many cell activities, so they are very important for homeostasis. But what controls the hormones themselves? Most hormones are regulated by feedback mechanisms. A feedback mechanism is a loop in which a product feeds back to control its own production. Most hormone feedback mechanisms involve negative feedback loops . Negative feedback keeps the concentration of a hormone within a narrow range. Q: Because they control many cell activities - as well as being controlled by feedback mechanisms - what substances are very important for homeostasis? Choices: - acids - proteins - enzymes - hormones A:

Ans:hormones
Answer the following question given this paragraph: Fiber is a complex carbohydrate that consists mainly of cellulose and comes only from plants. High-fiber foods include whole grains and legumes such as beans. Fiber can't be broken down by the digestive system, but it plays important roles in the body. It helps keep sugar and lipids at normal levels in the blood. It also helps keep food waste moist so it can pass easily out of the body. Q: What does fiber help keep at normal levels in the body? Choices: - salt and cholesterol - bloodpressure - hydration - sugar and lipids A:
sugar and lipids