Introduction to Metabolism

Which one is the heaviest particulate component of the cell?

• Mitochondria

• Nucleus

• Golgi apparatus

• Smooth endoplasmic reticulum

• Rough endoplasmic reticulum

The degradative processess are categorized under the heading of _____

• Anabolism

• Catabolism

• Metabolism

• Pleiotropism

• Isomerism

Which of the following is located in the mitochondria? (multiple answers)

• Cytochrome oxidase

• Succinate dehydrogenase

• Pyruvate kinase

• Pyruvate dehydrogenase

• Citrate lyase

The most active site of protein synthesis is the _______

• ribosome

• nucleus

• mitochondria

• Cell wall

• cytoskeleton

Which organelle is responsible for detoxifying harmful substances in the cell?

• Lysosome

• Peroxisome

• Endoplasmic reticulum

• Centriole

• Chloroplast

Where does the process of glycolysis occur in the cell?

• Cytoplasm

• Nucleus

• Mitochondria

• Endoplasmic reticulum

• Golgi apparatus

Which organelle is known as the 'powerhouse of the cell'?

• Lysosome

• Peroxisome

• Mitochondria

• Endoplasmic reticulum

• Golgi apparatus

Which of the following is NOT a characteristic of metabolic pathways?

• They are highly regulated

• They proceed in one direction only

• Each step is catalyzed by a specific enzyme

• They can occur both in the absence and presence of oxygen

• They are irreversible at every step

Which of the following processes occurs in the mitochondria of eukaryotic cells? (multiple answers)

• Glycolysis

• Citric Acid Cycle (Krebs Cycle)

• Lactate synthesis

• Photosynthesis

• Beta-oxidation of fatty acids

ATP (Adenosine Triphosphate) plays a crucial role in metabolism because it:

• Acts as a substrate for DNA synthesis

• Is the primary storage form of energy in the cell

• Functions as the main signaling molecule in catabolic pathways

• Serves as a coenzyme in redox reactions

• Directly participates in the synthesis of cellular membranes