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WorksheetsCarbohydrate Metabolism Biochemistry Test By Anis .BSN Brainiacs
Total questions: 30
Worksheet time: 30mins
What is metabolism?
A highly coordinated cellular activity
A process that only occurs in plants
A type of energy storage
A method of cellular respiration
What does NAD+ do?
Participates in oxidation reactions
Is a type of carbohydrate
Acts as a protein
Is involved in lipid metabolism
Where does glycogenesis occur?
Liver
Muscle
Adipose tissue
Both A and B
What is glycolysis?
The oxidation of glucose to pyruvate
The synthesis of glycogen
The breakdown of fatty acids
The process of protein synthesis
What triggers glycogenesis?
Low blood sugar levels
High blood sugar levels
Exercise
Starvation
What is the role of glucokinase?
Phosphorylates glucose in the liver
Breaks down glucose
Synthesizes ATP
Inhibits glycolysis
What is catabolism?
The degradative phase of metabolism
The synthesis of complex molecules
The process of energy storage
The conversion of glucose to ATP
The amount of ATP created is _____ proportional to the number of protons that are pumped across the inner mitochondrial membrane.
directly
reversely
inversely
half
what is the last electron acceptor in ETC.
H2O
Oxygen
Ubiquinone
ATP Synthase
What is the first step of glycolysis?
Phosphorylation of glucose
Conversion of pyruvate to acetyl CoA
Production of ATP
Reduction of NAD+
How much ATP will be generated from NADH?
1
4
3
2
ETC occurs in ___.
in mitochondria
matrix of mitochondria
in cytoplasm
inner membrane of mitochondria
Identify A.
NAD+
NADH dehydrogenase
H+
Ubiquinone
What is glycogenesis?
The breakdown of glucose
The storage of glucose
The conversion of glucose to fat
The conversion of fat to glucose
What is ATP?
A nucleotide that acts as an energy carrier
A type of carbohydrate
A protein involved in metabolism
A lipid molecule
In what type of cells does glycogenesis occur?
Liver cells only
Muscle cells only
Adipose cells only
Liver, muscle, and adipose cells
Pyruvate is readily to be converted to the following substances EXCEPT
Alanine
Acetyl CoA
Lactic acid
Phosphoenolpyruvate
(45 sec)
The _____ breaks down the glycogen to maintain the glucose level in the blood. The ______ _____break down the glycogen to conserve the energy required for the contraction of muscles.
liver, muscle cells
cells, liver cells
blood cells, muscle cells
heart, kidney cells
(45 sec)
The two main regulating enzymes of glycogenolysis.
Glycogen phosphorylase and phosphorylase kinase
Adenyl cyclase and cAMP
phosphoglucomutase and glycogen phosphorylase
Acid α-glucosidase and phosphoglucomutase
1. WHICH IS THE ENZYME TO CATALYZE PYRUVIXC ACID TO OXALOACETATE?
PYRUVATE CARBOXYLASE
HEXOKINASE
GLUCOSE 6 PHOSPHATASE
GLUCOKINASE
___________ will cleave the hexose into two molecules of triose.
Hexokinase
Glucokinase
Aldolase
Enolase
The products of the link reaction are
pyruvate and carbon dioxide
carbon dioxide and co-enzyme A
carbon dioxide, acetyl coA and NADH
NADH and carbon dioxide
How many ATP produced for each FADH2 that enter the electron transport chain from Kreb's cycle?
1
2
3
4
What is the first step of the Krebs cycle?
acetyl CoA combines with the four carbon compound to create a six carbon compound
CO2 is released from a six carbon compound to form a five carbon compound
CO2 is released from a five carbon compound to form a four carbon compound
A four carbon compound is transformed and ready to accept another acetyl CoA
This process uses NADH and FADH2 to produce ATP
fermentation
glycolysis
krebs cycle
oxidative phosphorylation
How many ATP molecules are produced during complete breakdown of glucose in a liver cell?
34
36
38
39
