32 Questions
Glycolysis takes place in the ______ of a cell
cytosol
Glycolysis occurs in the ______ where one 6 carbon molecule of glucose is oxidized to generate two 3 carbon molecules of pyruvate
cytoplasm
Glycolysis has two ______: the investment phase and the payoff phase
phases
First Half of Glycolysis (Energy-Requiring Steps) In the first half of glycolysis, two adenosine triphosphate (ATP) molecules are used in the ______ of glucose
phosphorylation
The final output or end product of Glycolysis is two molecules of ______
pyruvate
The first step of glycolysis is the conversion of glucose to ______
glucose-6-phosphate
Glycolysis, which is the first step in all types of cellular respiration is ______ and does not require oxygen
anaerobic
Glycolysis is the metabolic process that serves as the foundation for both ______ and anaerobic cellular respiration
aerobic
Carbon dioxide is not produced during ______
glycolysis
The process is so fast that thousands of ATP are produced in just a few ______
milliseconds
Glycolysis converts glucose into ______
pyruvate
Glycolysis occurs in the ______
cytosol
Glycolysis is an ______ process
oxygen-independent
Glycolysis generates a net gain of ______ molecules of ATP
two
The three stages of glycolysis are: Stage 1 (Priming stage), Stage 2 (Splitting stage), and Stage 3 (Oxidoreduction-phosphorylation stage)
The three key enzymes of glycolysis are ______, ______, and ______
hexokinase, phosphofructokinase, pyruvate kinase
Which molecule forms the first molecule during the citric acid cycle's reactions?
Citrate
Where does the citric acid cycle take place in eukaryotic cells?
Mitochondrial matrix
What is the primary role of the reduced electron carriers (NADH and FADH) generated in the TCA cycle?
Pass their electrons into the electron transport chain
Which individual is credited as the discoverer of the citric acid cycle?
Hans Krebs
What type of molecule is acetyl CoA, which serves as the starting material for the citric acid cycle?
Product of pyruvate oxidation
What is another name for the citric acid cycle based on the number of carboxyl groups present in its first two intermediates?
Tri-carboxylic acid (TCA) cycle
Which molecule combines with oxaloacetate in the first step of the citric acid cycle?
Acetyl CoA
How many carbon dioxide molecules are released during one turn of the citric acid cycle?
2
What is the end product of the fourth step of the citric acid cycle?
FADH
Which enzyme is important in regulating the speed of the citric acid cycle during the third step?
Isocitrate dehydrogenase
What occurs in the second step of the citric acid cycle?
Conversion of citrate into its isomer, isocitrate
Which molecule is formed in the fourth step and undergoes oxidation in the citric acid cycle?
$\alpha$-ketoglutarate
What is the net gain of ATP or GTP produced during one turn of the citric acid cycle?
1 ATP or GTP
Which molecule is reduced to form FADH during the series of reactions in the citric acid cycle?
$\alpha$-ketoglutarate
How many major steps are included in the citric acid cycle?
8
$\alpha$-ketoglutarate is oxidized and reduces which molecule to form NADH?
NAD
Learn about glycolysis, the metabolic pathway that converts glucose into pyruvate in the cytosol. Discover its function and how it generates ATP in an oxygen-independent process.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free