B1- Acrive Transport Flashcards
What is the process called when substances are absorbed against a concentration gradient?
Active Transport
Active transport allows movement from lower to higher concentration.
What structure in plant roots increases surface area for absorption?
Root hair cells
Root hairs are microscopic extensions that stick into the soil.
Why do plants need mineral ions?
For healthy growth
Mineral ions are essential for various physiological processes.
What method do root hair cells use to absorb minerals from the soil?
Active Transport
Active transport allows the uptake of minerals against a concentration gradient.
What is the primary source of energy for active transport?
Respiration
Energy from respiration is necessary for active transport processes.
In which part of the human body is active transport used to absorb glucose?
The gut
Active transport in the gut occurs when glucose concentration is lower in the gut than in the blood.
True or False: Active transport requires energy.
True
Active transport cannot occur without energy input.
Fill in the blank: Active transport allows nutrients to be taken into the _______ despite an unfavorable concentration gradient.
blood
This process is crucial for nutrient absorption when concentrations are lower in the gut.
What happens when the concentration of glucose in the gut is lower than in the blood?
Active transport is needed to absorb glucose
This allows glucose to enter the bloodstream for use in respiration.
What is the role of osmosis in root hair cells?
To take in water
Osmosis facilitates the movement of water into root hair cells.
List two examples of where active transport occurs in humans.
- Gut
- Kidney tubules
Active transport is utilized in various physiological processes throughout the human body.
