nutrition

25問 • 2年前

charish

通報

問題一覧

refers to any substance required for the growth and maintenance of an organism

nutrients

organisms that cannot make their own food and obtain their energy from other organisms. Examples: animals, fungi.

heterotrophs

the nurtitional requirements of plants are

Light Carbon Dioxide Water Soil Structure nutrients: Macro and Micro

Macronutrients

Nitrogen (N) Phosphorus (P) Potassium (K) Sulphur (S) Magnesium (Mg) Calcium (Ca)

Micronutrients

Boron (Bo) Copper (Cu) Iron (Fe) Chloride (CI) Manganese (Mn) Molybdenum (Mo) Zinc (Zn)

The routes for the absorption of water and minerals across plant roots:

A. Symplast route – through plasmodesmata B. Apoplast route – along cell walls

THE NUTRITIONAL REQUIREMENTS OF ANIMALS are

Carbohydrates Protein Fats Essential nutrients a.essential amino acid b.essential fatty acid c.vitamins

A. Essential amino acids

lysine, tryptophan, threonine, methionine, phenylalanine, leucine, isoleucine and valine.

s a unit of energy that indicates the amount of energy contained in food.

calorie

serve as a major energy source for the cells in the body. These are usually obtained from grains, cereals, breads, fruits, and vegetables. On average, carbohydrates contain 4 Calories per gram.

carbohydrates

can also be used as an energy source but the body mainly uses these as building materials for cell structures and as enzymes, hormones, parts of muscles, and bones. Proteins come from dairy products, poultry, fish, meat, and grains. Like carbohydrates, proteins also contain 4 Calories per gram

proteins

are used to build cell membranes, steroid hormones, and other cellular structures; also used to insulate nervous tissue, and also serve as an energy source. Fats also contain certain fat- soluble vitamins that are important for good health

fats

include substances that animals can only get from the foods they eat because they could not be synthesized inside the body.

essential nutrients

needed for synthesis of proteins and enzymes;

essential amino acid

– used for making special membrane lipids;

essential fatty acid

organic molecules required in small amounts for normal metabolism;

vitamins

THE MAIN STAGES OF FOOD PROCESSING:

A. Ingestion – the act of eating or feeding; this is coupled with the mechanical breakdown of food into smaller pieces allowing for a greater surface area for chemical digestion. B. Digestion – breakdown of food into particles, then into nutrient molecules small enough to be Chemical digestion by enzymes involves breaking of chemical bonds through the addition of water, i.e., enzymatic hydrolysis C. Absorption – passage of digested nutrients and fluid across the tube wall and into the body fluids; the cells take up (absorb) small molecules such as amino acids and simple sugars. D. Elimination –expulsion of the undigested and unabsorbed materials from the end of the gut.

When the draws on a plant start to turn yellow or a sticky pale green. Its then ofter sign of a .A lack means the plant does produce enough chlorophyl for effective phones, causing dull yellow futage alongside stunted and slow growth

nitrogen difeciency

will toler leares yellow then causes de dark spots and the edges of the leaves well Laft untreated, the plan will als begin to shed the affected leaves

phosphorus deficiency

fading beat colors other than yellowing or browning The green be will became and was looking and as the symptoms progrss the leaf will turn transluent wand almost transparent.

iron deficiency

Yellowing leaves are also the first sign of However, the difference here is that new growth is affected as well as mature leaves. There will also often be small brown spots around the leaf edges, particularly on. the youngest leaves.

potassium deficiency

the veins inside the leaves will stay a shade or two darker and greener than the rest of the leaf.

magnesium deficiency

NUTRIENT DEFICIENCIES IN PLANTS

nitogen phosphorus iron potassium magnesium deficiency

parasitic plants

root parasite rafflesia arnoldi dodder

preadator plants

pitcher plants yellow pitcher plants venus flytrap cobra lilly australlian sundew

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Module 3c

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MODULE 3d

MODULE 3d

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module 2

module 2

module 3

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問題一覧

refers to any substance required for the growth and maintenance of an organism

nutrients

organisms that cannot make their own food and obtain their energy from other organisms. Examples: animals, fungi.

heterotrophs

the nurtitional requirements of plants are

Light Carbon Dioxide Water Soil Structure nutrients: Macro and Micro

Macronutrients

Nitrogen (N) Phosphorus (P) Potassium (K) Sulphur (S) Magnesium (Mg) Calcium (Ca)

Micronutrients

Boron (Bo) Copper (Cu) Iron (Fe) Chloride (CI) Manganese (Mn) Molybdenum (Mo) Zinc (Zn)

The routes for the absorption of water and minerals across plant roots:

A. Symplast route – through plasmodesmata B. Apoplast route – along cell walls

THE NUTRITIONAL REQUIREMENTS OF ANIMALS are

Carbohydrates Protein Fats Essential nutrients a.essential amino acid b.essential fatty acid c.vitamins

A. Essential amino acids

lysine, tryptophan, threonine, methionine, phenylalanine, leucine, isoleucine and valine.

s a unit of energy that indicates the amount of energy contained in food.

calorie

serve as a major energy source for the cells in the body. These are usually obtained from grains, cereals, breads, fruits, and vegetables. On average, carbohydrates contain 4 Calories per gram.

carbohydrates

proteins

fats

include substances that animals can only get from the foods they eat because they could not be synthesized inside the body.

essential nutrients

needed for synthesis of proteins and enzymes;

essential amino acid

– used for making special membrane lipids;

essential fatty acid

organic molecules required in small amounts for normal metabolism;

vitamins

THE MAIN STAGES OF FOOD PROCESSING:

nitrogen difeciency

will toler leares yellow then causes de dark spots and the edges of the leaves well Laft untreated, the plan will als begin to shed the affected leaves

phosphorus deficiency

fading beat colors other than yellowing or browning The green be will became and was looking and as the symptoms progrss the leaf will turn transluent wand almost transparent.

iron deficiency

potassium deficiency

the veins inside the leaves will stay a shade or two darker and greener than the rest of the leaf.

magnesium deficiency

NUTRIENT DEFICIENCIES IN PLANTS

nitogen phosphorus iron potassium magnesium deficiency

parasitic plants

root parasite rafflesia arnoldi dodder

preadator plants

pitcher plants yellow pitcher plants venus flytrap cobra lilly australlian sundew