44-86

39問 • 2年前

問題一覧

Select the process that takes place during the digestion of carbohydrates: 1. the polysaccharides are decomposed to monosaccharides 2. the polysaccharides are decomposed by α--amylase to maltose 3. disaccharides are decomposed to monosaccharides 4. monosaccharides are absorbed by active suction process 5. they are absorbed in oral cavity

2,3,4

Which statement is wrong for glycogen breakdown?

it occurs in skeletal muscles by the action of glucagon

Select reaction showing stage of glycolytic oxido-reduction:

3- phosphoglyceraldehyde → lactate

Select allosteric inhibitors of phosphofructokinase:

ATP, NADH2

What is the process of regenerating NAD+ anaerobically called?

glycolytic oxido-reduction

Select the biological role of NADPH2 formed in pentose phosphate patway.

it is a hydrogen donor in cholesterol and fatty acids synthesis

Select enzyme deficiency which leads to hemolysis of red blood cells.

glutathione reductase

Enzymes hexokinase, glucose-6-phosphate dehydrogenase, gluconolactonase participate in the biochemical process:

pentose phosphate pathway

Which enzymes is regulatory for the gluconeogenesis?

pyruvate carboxylase

Which biochemical process belong enzymes phosphoglyceromutase, phosphoglycerate-kinase, glyceraldehyde phosphate dehydrogenase to?

glycolysis

Which reaction is irreversible in glycolysis?

fructose-6-phosphate → fructose-1,6 diphosphate

Which enzymes are used for synthesis of 3 phosphoglyceraldehyde from fructose 1.6 diphosphate in glycolysis: 1. Transketolase 2. Aldolase 3. Phosphofructokinase 4. Triose phospate isomerase

2,4

Select the compound of citric acid cycle mainly used for gluconeogenesis:

oxaloacetate

Which stament is right for breakdown of glucose by pentose phosphate pathway? – There are:

formed NADP·H2 and pentoses

Where is localised oxaloacetate synthesis (I) - and which enzyme catalyses (II) this process:

I - mitochondria, II - pyruvate carboxylase

Which hormones don’t participate in regulation of carbohydrate metabolism? 1. Aldosterone 2. Adrenalin 3. Insulin 4. Glucagon 5. Cortisone 6. Thyroxine 7. Calcitonin 8. Deoxycorticosterone

1,7

Which enzyme breaks fructose 1-6-diphosphate?

aldolase

Glucose in blood in determined by the:

glucose oxidase method

Which process refers the sequence of reactions: glucose → glucose-6-phosphate → fructose-6-phosphate → fructose 1,6 diphosphate to:

glycolysis

Select compound that is not a substrate for gluconeogenesis.

leucine

How many ATP are used for synthesis (I) and breakdown of glycogen (II)?

I - 2; II - 0

elect substrate and enzyme (Y) in the reaction X -Y→ dihydroxyacetone phosphate + glyceraldehyde-3-phosphate:

X - fructose-1,6-diphosphate; Y - aldolase

Select digestive enzymes participating in glycogen and starch breakdown:

α-amylase, α-1,6-glycosidase

Which organ produces sucrase and lactase? 1. In the oral cavity 2. In the gastric mucosa 3. In pancreas 4. In the intestinal mucosa

Select X in the reaction fructose-1,6-diphosphate —X→ glucose-6-phosphate → glucose.

fructose-6-phosphate

Select enzyme catalysing the phosphorylation using ATP.

glycokinase

Pentoses are utilized in the synthesis of:

nucleic acids

Select reaction catalysed by phosphoglycerate kinase.

1,3-diphosphoglycerate → 3-phosphoglycerate

How is transported glucose from blood into muscle and adipose tissue?

by participating of insuline

Where are localised glycolysis (I) and Krebs cycle (II)?

I - cytoplasm; II - mitochondria

What is the third bypass reaction of gluconeogenesis?

glucose-6-phosphate to glucose

Coenzym of phosphorylase is:

pyridoxal phosphate

What is oxaloacetic acid used for synthesis of ?

glucose

Which hormone is responsible for glucose storage?

insulin

Select right sequence of monosaccharides according to the slowdown of their suction rate

galactose>glucose>fructose>mannose>xylose

Which enzyme is called "branching"?

amylo-(1,4—1,6)-transglycosidase

Enzyme catalysing hydrolytic breakdown of glycogen in the liver is:

phosphorylase

Fructose 1-phosphate aldolase deficiency is caused by

fructose intolerance

What is formed by the reaction catalysed by glucose-6 phosphate dehydrogenase?

phosphogluconolactone

Histo100-200

Arda Emre HAN · 76問 · 2年前

Histo100-200