LABORATORY REVIEW
DIFFUSION AND OSMOSIS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
What is an example of active transport?
|
|
movement of glucose molecules into the cells of the villi
|
|
|
movement of glucose molecules down a concentration gradient
|
|
|
movement of ions in blood plasma
|
|
|
movement of water in the transpiration stream
|
Explanation:
Detailed explanation-1: -Examples of active transport include: uptake of glucose by epithelial cells in the villi of the small intestine. uptake of ions from soil water by root hair cells in plants.
Detailed explanation-2: -Some examples of active transport include the uptake of glucose in the intestine of the human body and the uptake of minerals or ions into the root hair cells of plants.
Detailed explanation-3: -An example is an active transport involving the sodium-potassium pump. It is a transport system in a biological membrane where three Na+ ions are taken out while two K+ ions are taken into the cell against their respective concentration gradients.
There is 1 question to complete.