carbohydrates Flashcards

1
Q

3 types of macronutrients?

A

carbohydrates
fat
protein

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2
Q

3 types of micronutrients?

A

vitamin
mineral
trace element

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3
Q

All macronutrients and micronutrients which 4 are organic? Which 2 are inorganic?

A

organic- include carbon atoms
carbohydrates/fat/protein/vitamin
inorganic- don’t contain carbon.
mineral/trace element/water

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4
Q

Two method to combine and splits?

A

condensation
combine together
hydrolysis
splits into small ones

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5
Q

carbohydrates 3 types? and example ?

A

momnosaccharide
glucose/fructose/galatose
disaccharides
surose/lactose/Maltose
polysaccharide

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6
Q

Brain only fuel used? for energy

A

glucose

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7
Q

most sweetest is?

A

fructose

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8
Q

lactose from?

A

Galatose combine to glucose

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9
Q

complex carbohydrate? x 2
how many sugar molecules chains composed?

A

oligosaccharides
chains composed 3 to 10 sugar molecules
polysaccharides
chains composed over 10 sugar molecules

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10
Q

oligosaccharides can break down by what?
which have a lot of oligosaccharides?

A

cannot break down by body just break down by intestinal bacteria Prebiotics
human breast milk contain a lot of oligosaccharide

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11
Q

polysaccharides 3 types?

A

starch
glycogen
fibre

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12
Q

starch 2 types?

A

is a polysaccharides
1)amylose 直鏈澱粉
2)amylopectin 支鏈澱粉
直鏈澱粉是一條直線,而支鏈澱粉則像有分岔一般,能增加與消化酵素接觸的表面積,所以消化速度快,但人體內分解澱粉的酵素主要是作用在直線處,因此分岔越多消化完整度越差。 所以一次大量攝食含較多支鏈澱粉的糯米製品容易伴隨消化不完全,腹脹、腹痛等腸胃不適情形。

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13
Q

where is glycogen from? break down to what?

A

storage in skeletal muscle and liver broken down to glucose

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14
Q

carbohydrate digestion? 3 steps?
use ? enzyme
digestion by ? where

A

starch throw amylase
maltose throw amylase
glucose throw Maltese
in small intestine

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15
Q

carbohydrate abortion in where?diffuse move to?
some monosaccharide from what to storage?

A

glucose/fructose/ galactose absorb by small intestine cells diffuse move to blood stream or to liver from glycogen to storage

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16
Q

function of carbohydrates ? x 4

A

energy storage
liver 1/3 muscle 2/3
fat metabolism liver needed for fat burning
produce energy
sparing protein fat and protein can be used when absence of carbohydrates

17
Q

absence of carbohydrates what disease will happen?

A

liver cannot break down fat>
ketone bodies are produced water is lost when ketone is excreted> dehydration>ketosis
酮體引發滲透性利尿

18
Q

absence of carbohydrates what happen in liver

A

break down fat to Pyruvic acid丙酮酸 support brain energy

19
Q

ketosis酮症? relation of DM?

A

當葡萄糖不足,肝會將脂肪轉換成脂肪酸與酮體Ketone bodies,取代葡萄糖提供能量。
當缺乏胰島素時,糖份無法進入細胞提供熱能,身體會轉而分解脂肪做為能量來源,脂肪在分解的過程中,會釋放酮體(Ketone)至血液,再經由尿中排出,高血酮表示碳水化合物的攝取或胰島素作用不足,顯示糖尿病控制狀況不佳。

20
Q

dehydration symptom?

A

less urine/ dark urine / headaches/ tired/ dizzy/ rapid heart rate/ confusion

21
Q

hypoglycemia symptoms?

A

blood sugar is below 4mmol/L
Shaking/Sweating/Hunger/Fast heartbeat/confusion

22
Q

how pancreas regulating blood sugar levels when low blood glucose?

A

low blood glucose
pancreas release glucagon to liver release glucagon升糖素 break down glycogen肝醣 to glucose

23
Q

how pancreas regulating blood sugar levels when high blood glucose?

A

high blood glucose
pancreas release insulin carry glucose out from blood

24
Q

How oligosaccharide decrease cholesterol?
which food?

A

is a dietary fibre
onion, garlic, soybean, oats
oligosaccharide will combine with bile, bile make with cholesterol excretion from body