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LSU POMARICO BIOL 1002 FINAL (35,36,37,38,39) Questions
and Answers with Complete Solutions UPDATED!!!
Nutrition in all organisms involves four main steps: - ANSWER -
Acquisition of nutrients
-Digestion, if required
-Distribution of nutrients throughout the body.
-Synthesis of molecules for the organism's body.
What do animal cells require? What's the main function of
nutrition? - ANSWER Animal cells require a continuous supply
of energy. One of the main functions of nutrition in animals is to
act as an energy source.
Difference between plant and animals (nutrition wise) -
ANSWER plants rely on photosynthesis for their energy needs.
plants (starting material) - ANSWER Elements and small
molecules
plants (digestion) - ANSWER usually none
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plants (distribution) - ANSWER Driven by osmosis and
evaporation
plants (synthesis of molecules) - ANSWER Can do it all
animals (starting material) - ANSWER large organic molecules
animals (digestion) - ANSWER required to break large molecules
down to building blocks
animals (distribution) - ANSWER pumping mechanism for most
animals (synthesis of molecules) - ANSWER must acquire some
through diet
the large organic molecules used by animals to start nutrition
are filled with ______ - ANSWER energy
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how is nutrient energy measured? - ANSWER Nutrient energy is
measured in calories (amount of energy needed to raise the
temperature of I gram of water by 1 o C).
how is food energy content measured? - ANSWER Food energy
content is measured in Calories. 1 Calorie = 1 kilocalorie (1000
calories).
how many calories does the average adult need at rest? -
ANSWER The average adult needs 1500 Calories per day at
complete rest. Exercise (and mental activity) greatly boosts
caloric requirements
The five major categories of animal nutrients are: - ANSWER 1)
Lipids.
2) Carbohydrates.
3) Proteins.
4) Minerals.
5) Vitamins.
Lipid types - ANSWER fats
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phospholipids
cholesterol
lipids provide - ANSWER more energy/gram than any other
nutrient source.
fat (9 Calories/gram)
carbohydrates or proteins (4 Calories/gram)
pros of storing extra calories as fat - ANSWER -more calories
with less weight (3600 Calories/pound)
-fats are hydrophobic and do not cause accumulation of water
-functions as insulation because fat conducts less heat (see fig
35-2)
-protective padding around important organs
fats also supply - ANSWER -certain hormones
-cell components (membranes)
-nerve cell coverings
LSU POMARICO BIOL 1002 FINAL (35,36,37,38,39) Questions
and Answers with Complete Solutions UPDATED!!!
Nutrition in all organisms involves four main steps: - ANSWER -
Acquisition of nutrients
-Digestion, if required
-Distribution of nutrients throughout the body.
-Synthesis of molecules for the organism's body.
What do animal cells require? What's the main function of
nutrition? - ANSWER Animal cells require a continuous supply
of energy. One of the main functions of nutrition in animals is to
act as an energy source.
Difference between plant and animals (nutrition wise) -
ANSWER plants rely on photosynthesis for their energy needs.
plants (starting material) - ANSWER Elements and small
molecules
plants (digestion) - ANSWER usually none
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plants (distribution) - ANSWER Driven by osmosis and
evaporation
plants (synthesis of molecules) - ANSWER Can do it all
animals (starting material) - ANSWER large organic molecules
animals (digestion) - ANSWER required to break large molecules
down to building blocks
animals (distribution) - ANSWER pumping mechanism for most
animals (synthesis of molecules) - ANSWER must acquire some
through diet
the large organic molecules used by animals to start nutrition
are filled with ______ - ANSWER energy
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how is nutrient energy measured? - ANSWER Nutrient energy is
measured in calories (amount of energy needed to raise the
temperature of I gram of water by 1 o C).
how is food energy content measured? - ANSWER Food energy
content is measured in Calories. 1 Calorie = 1 kilocalorie (1000
calories).
how many calories does the average adult need at rest? -
ANSWER The average adult needs 1500 Calories per day at
complete rest. Exercise (and mental activity) greatly boosts
caloric requirements
The five major categories of animal nutrients are: - ANSWER 1)
Lipids.
2) Carbohydrates.
3) Proteins.
4) Minerals.
5) Vitamins.
Lipid types - ANSWER fats
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phospholipids
cholesterol
lipids provide - ANSWER more energy/gram than any other
nutrient source.
fat (9 Calories/gram)
carbohydrates or proteins (4 Calories/gram)
pros of storing extra calories as fat - ANSWER -more calories
with less weight (3600 Calories/pound)
-fats are hydrophobic and do not cause accumulation of water
-functions as insulation because fat conducts less heat (see fig
35-2)
-protective padding around important organs
fats also supply - ANSWER -certain hormones
-cell components (membranes)
-nerve cell coverings
