active transport Flashcards
(20 cards)
What is active transport?
A process that requires energy to move molecules against a concentration gradient
What is required for active transport to occur?
Energy
How do substances on the concentration gradient in active transport?
against the concentration gradient
In plants, why is active transport necessary?
To move mineral ions into root hairs where they are in higher concentration than in the soil
What role does active transport play in plant root cells?
It allows plants to take in the ions they need from the soil
How does active transport function in animals?
It moves glucose molecules across the gut wall into the blood
When is active transport required for glucose in the intestine?
When glucose concentration in the intestine is lower than in the intestinal cells
What energy source is used for active transport in animals?
Energy produced by respiration
Fill in the blank: Active transport moves substances from a _______ concentration to a _______ concentration.
low, high
True or False: Active transport can occur without energy.
False
What is active transport?
A process that requires energy to move molecules against a concentration gradient
What is required for active transport to occur?
Energy
How do substances typically move in passive transport?
Down concentration gradients
In plants, why is active transport necessary?
To move mineral ions into root hairs where they are in higher concentration than in the soil
What role does active transport play in plant root cells?
It allows plants to take in the ions they need from the soil
How does active transport function in animals?
It moves glucose molecules across the gut wall into the blood
When is active transport required for glucose in the intestine?
When glucose concentration in the intestine is lower than in the intestinal cells
What energy source is used for active transport in animals?
Energy produced by respiration
Fill in the blank: Active transport moves substances from a _______ concentration to a _______ concentration.
low, high
True or False: Active transport can occur without energy.
False
