The process that requires energy for digested nutrients to pass through the small intestinal wall into the villi is called active transport
In the process of digestion, complex food molecules are broken down into macromolecules which are absorbed by the body. The absorption of nutrients such as glucose, vitamins, and amino acids takes place in the small intestine.
The small intestine contains tiny hair-like projections called the microvilli that are rich in blood vessels. These structures help in the absorption of nutrients.
As the concentration of these nutrients is higher in the bloodstream than in the intestine. The absorption of nutrients requires energy for the movement of nutrients from lower concentration to higher concentration. This energy-driven transportation is called active transport.
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Answer:
When your body does become too cold, its automatic response is to tighten and relax the muscles in rapid succession to warm up. This is also known as shivering.
This is because Aristotle believed that purposive final causes guided all natural processes. He classified organism according to their traits, but there was many problems of Aristotle’s limited classification because some organisms didn’t fit the group.
For example, he put birds, bats, and flying insects in the same classification group because of their ability to fly, but today we know that they have little in common. He also distinguished animals with blood and animals without blood.
Answer:
Do honeyguides in different areas of the world have a similar symbiosis with humans?
How old are the birds when they learn to respond to the humans’ calls?
Could other birds in the region form a similar symbiosis with humans?
Explanation:
