Exam revision Flashcards
Why are enzymes described as being substrate specific
Only certain enzymes can fit with certain substrates
How does an enzyme act as a catalyst for reactions
By reducing activation energy
Functions of the colon
- Storage of feces
- Fermentation of undigested foods
Difference between vitamins and minerals
Whereas vitamins are organic substances (made by plants or animals), minerals are inorganic elements that come from the soil and water and are absorbed by plants or eaten by animals. Your body needs larger amounts of some minerals, such as calcium, to grow and stay healthy.
What is ATP
Adenosine triphosphate
In a process called cellular respiration, chemical energy in food is converted into chemical energy that the cell can use, and stores it in molecules of ATP. … When the cell needs energy to do work, ATP loses its 3rd phosphate group, releasing energy stored in the bond that the cell can use to do work.
What is metabolic rate
Basal metabolic rate is the rate of energy expenditure per unit time by endothermic animals at rest.
Nutrients absorbed in the small intestine
Carbohydrates
Proteins
lipids
Name of lymph capillary found in the vili
lacteals
Why does Co2 diffuse faster than oxygen
its more soluble
3 layers of muscle in the stomach
longitude
circular
oblique
What is a macrophage
type of white blood cell that surrounds and kills microorganisms, removes dead cells, and stimulates the action of other immune system cells.
Drop of blood pressure in the nephron
with a decrease in blood pressure, the nephron increases sodium and water reabsorption, to increase ECFV and thereby increase blood pressure.
