- The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes.
Example : Fats
- functions of carbohydrates in the body are to provide energy, store energy, build macromolecules, and spare protein and fat for other uses.
Example : Glucose
- Nucleic acids function to create, encode, and store biological information in cells, and serve to transmit and express that information inside and outside the nucleus.
Example: DNA
- .Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, responding to stimuli, providing structure to cells and organisms, and transporting molecules from one location to another.
Example: Keratin
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Answer:
1. Bacteria cannot live above 100 degrees Celsius; archaea can thrive in extreme temperatures. Archaea are actually extremophiles. They can survive in extreme physical and geochemical conditions.
2. Bacterial cell walls have peptidoglycan (mesh-like structure also known as murein); archaeal cell walls do not have peptidoglycan.
Answer:
c. increase the surface area available for hydrolysis by lipase
Explanation:
Emulsification of fats(fatty acid) is a chemical reaction where large molecules(globules) of fats are broken down into a smaller molecules (droplets) by the action of an emulsifier.
In the human body, emulsification takes places in the duodenum during the process of digestion of fats. When large fat molecules have been broken down into smaller fat molecules by action of an emulsifier called bile salts from the gall bladder, a larger surface area is created which makes it possible for the enzyme lipase from the pancreas to react with or act on fat molecules through the process of hydrolysis thereby converting the fats to fatty acids and glycerol for use by the body.
Explanation:
Consider a stab wound in upper abdomen which has pierced through upper/ventral wall of stomach. This is what medically called as gastric perforation and requires emergency surgical management within 4 to 12 hours of injury. If left unattended the person will develope distension of abdomen with vomitting within 4 to 6 hrs, fever within 12 hrs, all because of infection spreading to rest of abdomen ( medically called Peritonitis). If no surgery is undertaken the person will die due to sepsis within 24 to 48 hrs.
Situation 2: stab would injuring major vessel or even liver will pool blood in abdomen ( medically Hemoperitonium) will further worsen the situation and wld need more intensive management. If not treated properly such person can die within 6 to 12 hrs due to hypovoluemic shock.
