Question 1

In a hydra, digestion is completed ________.

Accepted Answer

A)   intracellularly
B)   extracellularly
C)   in the alimentary canal
D)   in the gastrovascular cavityE) A) and C)
F) B) and C)

Question 2

If you were to jog one kilometre a few hours after lunch, which stored fuel would you probably tap?

Accepted Answer

A)   muscle proteins
B)   liver glycogen and muscle glycogen
C)   fat stored in adipose tissue
D)   blood proteinsE) A) and D)
F) B) and C)

Question 3

Coprophagy is important for the nutritional balance of ________.

Accepted Answer

A)   ruminants such as cows
B)   insects and arthropods
C)   rabbits and their relatives
D)   possums and some rodentsE) None of the above
F) A) and D)

Question 4

What is the importance of the mucus that are released by salivary glands?

Accepted Answer

A)   They aid in degradation of triglycerides to fatty acids and monoglycerides.
B)   They are beginning the process of starch digestion.
C)   They are hormonal molecules that stimulate the release of gastric juice by the stomach in anticipation of receipt of the contents of the mouth.
D)   They are glycoproteins that make food slippery enough to slide easily through the oesophagus.E) None of the above
F) A) and C)

Question 5

When the digestion and absorption of organic carbohydrates results in more energy-rich molecules than are immediately required by an animal, the excess is ________.

Accepted Answer

A)   eliminated in the faeces
B)   stored as starch in the liver
C)   stored as glycogen in the liver and muscles
D)   oxidised and converted to ATPE) B) and C)
F) A) and D)

Question 6

Upon activation by stomach acidity, the secretions of the parietal cells ________.

Accepted Answer

A)   initiate the chemical digestion of protein in the stomach
B)   initiate the mechanical digestion of lipids in the stomach
C)   initiate the chemical digestion of lipids in the stomach
D)   delay digestion until the food arrives in the small intestineE) A) and B)
F) A) and C)

Question 7

If you found a vertebrate skull in the bush and the teeth were sharp and scissor-like, what type of food would you expect this animal to eat?

Accepted Answer

A)   grass
B)   flesh of another animal
C)   nectar
D)   bloodE) B) and D)
F) B) and C)

Question 8

Why do the cells of the digestive system secrete proteolytic enzymes, such as pepsin, in their inactive forms?

Accepted Answer

A)   These proteolytic enzymes, in active form, would digest the very tissues that synthesise them.
B)   By secreting inactive enzymes, the catalytic activity of the enzymes is maintained for a longer time.
C)   The stomach is too acidic to maintain these enzymes in their active form.
D)   Inactive pepsin and trypsin are more easily transported across the cell membrane.E) B) and D)
F) A) and B)

Question 9

The active ingredient orlistat acts to decrease the amount of fat that is absorbed by attaching to enzymes that digest fat. Which of the following are potential targets of orlistat?

Accepted Answer

A)   salivary amylase
B)   pepsidase
C)   pancreatic lipase
D)   secretinE) A) and D)
F) A) and C)

Question 10

Examine the digestive system structures in the figure.  
-The agents that help emulsify fats are produced in location ________.

Accepted Answer

A)   1
B)   3
C)   8
D)   9E) All of the above
F) C) and D)

Question 11

Examine the digestive system structures in the figure. 
-Most of the digestion of fats occurs in structure(s)  ________.

Accepted Answer

A)   3 only
B)   4 only
C)   1 and 4
D)   3 and 4E) A) and B)
F) B) and D)

Question 12

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

Accepted Answer

A)   excludes the need for extracellular digestion
B)   allows for specialised regions with specialised functions
C)   allows extensive branching
D)   facilitates intracellular digestionE) None of the above
F) A) and B)

Question 13

The digestion of ________ begins in the stomach.

Accepted Answer

A)   protein
B)   fat
C)   nucleic acids
D)   carbohydratesE) B) and D)
F) C) and D)

Question 14

A significant contribution of intestinal bacteria to human nutrition is the benefit of bacterial ________.

Accepted Answer

A)   production of vitamins A and C
B)   absorption of organic materials
C)   production of vitamin K
D)   recovery of water from faecal matterE) A) and D)
F) A) and B)

Question 15

A fasting animal whose energy needs exceed those provided in its diet will draw on its stored resources in which order?

Accepted Answer

A)   fat, then glycogen, then protein
B)   glycogen, then protein, then fat
C)   liver glycogen, then muscle glycogen, then fat
D)   muscle glycogen, then fat, then liver glycogenE) B) and C)
F) None of the above

Question 16

Animals that migrate great distances would obtain the greatest energetic benefit of storing chemical energy as ________.

Accepted Answer

A)   proteins
B)   minerals
C)   carbohydrates
D)   fatsE) A) and C)
F) A) and B)

Question 17

The large surface area in the gut directly facilitates ________.

Accepted Answer

A)   secretion
B)   absorption
C)   filtration
D)   temperature regulationE) None of the above
F) B) and C)

Question 18

Cattle are able to survive on a diet consisting almost entirely of plant material because cattle ________.

Accepted Answer

A)   are autotrophic
B)   re-ingest their faeces
C)   manufacture all 15 amino acids out of sugars in the liver
D)   have cellulose-digesting, symbiotic microorganisms in chambers of their stomachsE) All of the above
F) None of the above

Question 19

Among mammals, it is generally true that ________.

Accepted Answer

A)   all types of foods begin their enzymatic digestion in the mouth
B)   after leaving the oral cavity, the bolus enters the larynx
C)   the epiglottis prevents swallowed food from entering the trachea
D)   the trachea leads to the oesophagus and then to the stomachE) A) and D)
F) C) and D)

Question 20

The process of obtaining food is known as ________ and requires specialised feeding mechanisms.

Accepted Answer

A)   ingestion
B)   digestion
C)   absorption
D)   excretionE) A) and C)
F) All of the above

Exam 41: Animal Nutrition

The digestion of ________ begins in the stomach.

Correct AnswerverifiedShow Answer

Coprophagy is important for the nutritional balance of ________.

Correct AnswerverifiedShow Answer

The process of obtaining food is known as ________ and requires specialised feeding mechanisms.

Correct AnswerverifiedShow Answer

Cattle are able to survive on a diet consisting almost entirely of plant material because cattle ________.

Correct AnswerverifiedShow Answer

Examine the digestive system structures in the figure. -The agents that help emulsify fats are produced in location ________.

Correct AnswerverifiedShow Answer

What is the importance of the mucus that are released by salivary glands?

Correct AnswerverifiedShow Answer

Animals that migrate great distances would obtain the greatest energetic benefit of storing chemical energy as ________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Among mammals, it is generally true that ________.

Correct AnswerverifiedShow Answer

The large surface area in the gut directly facilitates ________.

Correct AnswerverifiedShow Answer

If you found a vertebrate skull in the bush and the teeth were sharp and scissor-like, what type of food would you expect this animal to eat?

Correct AnswerverifiedShow Answer

In a hydra, digestion is completed ________.

Correct AnswerverifiedShow Answer

Upon activation by stomach acidity, the secretions of the parietal cells ________.

Correct AnswerverifiedShow Answer

The active ingredient orlistat acts to decrease the amount of fat that is absorbed by attaching to enzymes that digest fat. Which of the following are potential targets of orlistat?

Correct AnswerverifiedShow Answer

If you were to jog one kilometre a few hours after lunch, which stored fuel would you probably tap?

Correct AnswerverifiedShow Answer

Examine the digestive system structures in the figure. -Most of the digestion of fats occurs in structure(s) ________.

Correct AnswerverifiedShow Answer

When the digestion and absorption of organic carbohydrates results in more energy-rich molecules than are immediately required by an animal, the excess is ________.

Correct AnswerverifiedShow Answer

Why do the cells of the digestive system secrete proteolytic enzymes, such as pepsin, in their inactive forms?

Correct AnswerverifiedShow Answer

A fasting animal whose energy needs exceed those provided in its diet will draw on its stored resources in which order?

Correct AnswerverifiedShow Answer

A significant contribution of intestinal bacteria to human nutrition is the benefit of bacterial ________.

Correct AnswerverifiedShow Answer

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