Exam 33: Animal Nutrition

People who live in agrarian societies eat more starch and have extra copies of the amylase gene compared with people who live in societies that depend on hunting or fishing.This is an example of

Mouse mutations can affect an animal's appetite and eating habits.The ob gene codes for a satiety factor (being fed to capacity),the hormone leptin.The db gene product,the leptin receptor,is required to respond to the satiety factor.Leptin is a product of adipose cells.Therefore,a mouse that became very obese by eating in excess would be expected to have

Which organ is incorrectly paired with its function?

If someone is feeling stressed or anxious,hormones present in blood communicate with cells to begin breaking down stored energy if the body needs it.In this situation,how does stress affect metabolic rate?

An advantage of a complete digestive system over a gastrovascular cavity is that the complete system

Once humans ingest food,the first category of macromolecules to be chemically digested by enzymes in the mouth is

Abetalipoproteinemia is a very rare genetic disorder that results in normal absorption of fats and vitamins from food,thus causing vitamin deficiencies.One of the symptoms of abetalipoproteinemia is poor transmission of nerve impulses due to issues with neuron cell membranes.A deficiency in what vitamin could result in this symptom?

The box jellyfish is a carnivore that feeds on fish,crustaceans,and plankton and contains a gastrovascular cavity.Suppose a box jellyfish had a mutation in its genome such that it could not secrete any molecules from its gland cells.What biological process would this box jellyfish have difficulty performing?

After eating a carbohydrate-rich meal,the mammalian pancreas increases its secretion of

Which of the following is not a major activity of the stomach?

Independent of whether an organism is an endotherm or ectoderm,the least reliable indicator of an animal's metabolic rate is the amount of

In 2011 it was reported that scientists used GPS to create a "map" of bats' molar teeth (similar to how GPS can produce a topographic map of a mountain).Why would scientists want to pursue this project?

John is a 37-year-old male who is suffering from an unknown bacterial infection that is causing him to feel quite ill.John was prescribed broad-spectrum antibiotics that kill a wide variety of bacteria.What effects would these antibiotics have on John's microbiome?

Analysis of jawbones from the skeletal remains of a vertebrate animal reveal its dietary patterns owing to

If a person were to maintain the same level of activity at ages 25 and 35,how would the weight of the person differ between the two ages?

Omega-3 and omega-6 essential fatty acids are readily available in leafy green plants.What is one way to ensure that animals raised for commercial purposes have enough of these fatty acids in their diets such that fatty acid supplementation is not needed?

The molar teeth of herbivorous mammals are especially effective at

Because the foods eaten by animals are often composed largely of macromolecules,they must be able to break down ingested substances into smaller molecules.What process achieves this goal?

Hypoglycemia occurs when there are low levels of glucose in the blood of a healthy human.Which is likely the most effective way to treat hypoglycemia?

A person diagnosed with exocrine pancreatic insufficiency (EPI)does not have the digestive enzymes that are needed to adequately digest fats,proteins,and carbohydrates.What would be a likely consequence of this medical condition?