Question

Which substance is a stomach secretion that is matched correctly with its description?

a. intrinsic factor – kills bacteria

b. hydrochloric acid – necessary for absorption of vitamin B12

c. thick mucus – forms a protective barrier for the stomach lining

d. gastric juice – activates pepsinogen

e. bile – partially digests starch

What piece of information related to the condition of lactose intolerance is correct?

a. The lack of the enzyme maltase causes lactose intolerance.

b. Humans and most other mammals regularly drink milk past weaning, thus, lactose intolerance is found in many species.

c. Lactose is found in milk; however, it is not present in other dairy products such as cheese and ice cream.

d. The majority of the world's population experience issues digesting lactose.

e. Bacterial digestion of lactose in the stomach accounts for cramps and diarrhea that accompany lactose intolerance.

Rafael frequently has a case of the hiccups. What should he be told about this condition?

a. Hiccups occur when muscles in the lungs develop spasms.

b. The sounds associated with hiccupping originate in the stomach.

c. Making a conscious effort to swallow more air may help reduce the incidence of having the hiccups.

d. A health provider should be consulted if the hiccups last more than a few minutes.

e. Hiccups result in a short, quick breath that is interrupted by the closing of the epiglottis.

Which correctly states the hierarchy of components that comprise a body system?

a. Cells, organs, tissues, systems

b. Cells, tissues, organs, systems

c. Fat tissue, muscle, organs, systems

d. Cells, fat tissue, organs, systems

e. Hands and feet

What is a major difference between the eating habits of our ancient ancestors and the way we eat today?

a. Our much more diverse diet today accounts for our increased life expectancy.

b. Our present diets, much higher in fiber, help explain the larger amounts of phytonutrients that we consume when compared to our ancestors.

c. If our current diets included grains to the extent of our ancestors' diets, nearly 50 percent of recommended daily calories would be met by grain products.

d. When compared to our ancestors, we expend minimal amounts of energy in obtaining our food, thus our caloric needs are much lower.

e. Meat was consumed only occasionally accounting for less than 5 percent of total calories in our ancestors' diets.

Answer 1

C. Thick mucous forms protective barrier for stomach lining.

e bacterial digestion of lactose causes cramps and diarrhea in lactose intolerace as enzyme lactase is absent.

e Hiccups result in a short, quick breath that is interrupted by the closing of the epiglottis.

b. Cells, tissues, organs, systems

D. When compared to our ancestors, we expend minimal amounts of energy in obtaining our food, thus our caloric needs are much lower.