Answer the following question given this paragraph: The strength of acids and bases is determined by the concentration of ions they produce when dissolved in water. The concentration of hydrogen ions in a solution is called acidity. It is measured by pH. A neutral substance has a pH of 7. An acid has a pH lower than 7, and a base has a pH greater than 7. Q: The concentration of hydrogen ions in a solution is called? Choices: - alkalinity - alcohol - moisture - acidity A:
acidity
Answer the following question given this paragraph: Q: The posterior pituitary is an extension of what anatomical structure? Choices: - brain stem - frontal lobe - hippocampus - hypothalamus A:
hypothalamus
Q: Answer the following question given this paragraph: Alpha, beta, and gamma emissions have different abilities to penetrate matter. The relatively large alpha particle is easily stopped by matter (although it may impart a significant amount of energy to the matter it contacts). Beta particles penetrate slightly into matter, perhaps a few centimeters at most. Gamma rays can penetrate deeply into matter and can impart a large amount of energy into the surrounding. Q: Alpha, beta, and gamma emissions are associated with what kind of energy? Choices: - kinetic - electrical - potential - radiation A:
A: radiation
Question: Answer the following question given this paragraph: Yogurt is a good source of calcium. Yogurt also contains active cultures of "good" bacteria. Foods that contain these beneficial bacteria are sometimes called "probiotic. ". Q: What term is used to describe foods containing active cultures of beneficial bacteria? Choices: - sembiotic - antibiotics - carotenoids - probiotic A:
Answer: probiotic
*Question*
Answer the following question given this paragraph: Figure 34.16 Digestion of carbohydrates is performed by several enzymes. Starch and glycogen are broken down into glucose by amylase and maltase. Sucrose (table sugar) and lactose (milk sugar) are broken down by sucrase and lactase, respectively. Q: Digestion of carbohydrates is performed by several enzymes. starch and glycogen are broken down into glucose by amylase and maltase. sucrose (table sugar) and lactose (milk sugar) are broken down by sucrase and this? Choices: - lipase - pepsin - hydrolase - lactase A:
**Answer**
lactase
(Question)
Answer the following question given this paragraph: Mercury is very close to the Sun, so it can get very hot. Mercury also has virtually no atmosphere. As the planet rotates very slowly, the temperature varies tremendously. In direct sunlight, the surface can be as hot as 427C (801F). On the dark side, the surface can be as cold as 183C (297F)! The coldest temperatures may be on the insides of craters. Most of Mercury is extremely dry. Scientists think that there may be a small amount of water, in the form of ice, at the planet's poles. The poles never receive direct sunlight. Q: What planet is closest to our sun? Choices: - Earth - Venus - Pluto - mercury A:
(Answer)
mercury