Answer the following question given this paragraph: A monoprotic acid is an acid that contains only one ionizable hydrogen. Hydrochloric acid and acetic acid are monoprotic acids. A polyprotic acid is an acid that contains multiple ionizable hydrogens. Most common polyprotic acids are either diprotic (such as H 2 SO 4 ) or triprotic (such as H 3 PO 4 ). Q: Which acid contains only one ionizable hydrogen? Choices: - citric acid - lactic acid - amino acid - monoprotic acid A:
monoprotic acid
Answer the following question given this paragraph: There are two different types of immune responses. Both types involve lymphocytes. However, one type of response involves B cells. The other type involves T cells. Q: What type of systemic response involves lymphocytes? Choices: - natural - chronic - inflammation - immune A:
immune
Q: Answer the following question given this paragraph: 25.1 The Ray Aspect of Light There are three ways in which light can travel from a source to another location. (See Figure 25.3. ) It can come directly from the source through empty space, such as from the Sun to Earth. Or light can travel through various media, such as air and glass, to the person. Light can also arrive after being reflected, such as by a mirror. In all of these cases, light is modeled as traveling in straight lines called rays. Light may change direction when it encounters objects (such as a mirror) or in passing from one material to another (such as in passing from air to glass), but it then continues in a straight line or as a ray. The word ray comes from mathematics and here means a straight line that originates at some point. It is acceptable to visualize light rays as laser rays (or even science fiction depictions of ray guns). Ray The word "ray" comes from mathematics and here means a straight line that originates at some point. Q: Regardless of the mode, light is modeled as traveling in straight lines called what? Choices: - waves - arrows - electrons - rays A:
A: rays
Question: Answer the following question given this paragraph: The first year of life after birth is called infancy. During infancy, a baby grows very quickly. The baby's length typically doubles and her weight triples by her first birthday. Many other important changes also occur during infancy:. Q: What is the first year of life following birth called? Choices: - baby - childhood - toddler - infancy A:
Answer: infancy
*Question*
Answer the following question given this paragraph: Steam fog appears in autumn when cool air moves over a warm lake. Water evaporates from the lake surface. As the water vapor cools, it condenses. The fog appears like steam. Q: What appears in autumn when cool air moves over a warm lake? Choices: - misty fog - feature fog - movement fog - steam fog A:
**Answer**
steam fog
*Question*
Answer the following question given this paragraph: Saliva Saliva is essentially (95.5 percent) water. The remaining 4.5 percent is a complex mixture of ions, glycoproteins, enzymes, growth factors, and waste products. Perhaps the most important ingredient in salvia from the perspective of digestion is the enzyme salivary amylase, which initiates the breakdown of carbohydrates. Food does not spend enough time in the mouth to allow all the carbohydrates to break down, but salivary amylase continues acting until it is inactivated by stomach acids. Bicarbonate and phosphate ions function as chemical buffers, maintaining saliva at a pH between 6.35 and 6.85. Salivary mucus helps lubricate food, facilitating movement in the mouth, bolus formation, and swallowing. Saliva contains immunoglobulin A, which prevents microbes from penetrating the epithelium, and lysozyme, which makes saliva antimicrobial. Saliva also contains epidermal growth factor, which might have given rise to the adage "a mother's kiss can heal a wound. " Each of the major salivary glands secretes a unique formulation of saliva according to its cellular makeup. For example, the parotid glands secrete a watery solution that contains salivary amylase. The submandibular glands have cells similar to those of the parotid glands, as well as mucus-secreting cells. Therefore, saliva secreted by the submandibular glands also contains amylase but in a liquid thickened with mucus. The sublingual glands contain mostly mucous cells, and they secrete the thickest saliva with the least amount of salivary amylase. Q: Arguably the most important ingredient in saliva for digestion is a type of what, which initiates the breakdown of carbohydrates? Choices: - amino - genes - fatty - enzyme A:
**Answer**
enzyme