PRELIM EXAM IN NCM 105

Which organelle is responsible for producing energy in a cell?

• Nucleus

• Mitochondria

• Endoplasmic reticulum

• Golgi apparatus

Mitochondria are known as the "powerhouses of the cell" because they generate ATP, which is used as a source of energy. Select all that apply

• Protein synthesis

• Lipid synthesis

• Detoxification

• All of the above

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

• Golgi apparatus

• Lysosome

• Smooth endoplasmic reticulum

• Nucleus

Which organelle is responsible for packaging and modifying proteins for transport within the cell?

• Nucleus

• Golgi Apparatus

• Ribosome

• Endoplasmic Reticulum

What is the primary function of ribosomes?

• Synthesizing proteins

• Synthesizing lipids

• Storing genetic material

• Producing energy

Where does the majority of nutrient absorption take place in the digestive system?

• Stomach

• Small Intestine

• Large Intestine

• Esophagus

What is the role of bile in digestion?

• Emulsifies fats

• Breaks down proteins

• Converts sugars to glucose

• Neutralizes stomach acid

Which structure prevents food and stomach acid from flowing back into the esophagus?

• Sphincter of Oddi

• Pyloric Sphincter

• Lower Esophageal Sphincter (LES)

• Ileocecal Valve

In the small intestine, nutrients are primarily absorbed in which section?

• Duodenum

• Jejunum

• Ileum

• Ileum

What is the main function of the large intestine in the digestive process?

• Absorption of nutrients

• Secretion of digestive enzymes

• Absorption of water and electrolytes

• Mechanical digestion of food