Active transport

High school (ages 12+)
Human Body

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/active-transport

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the secondary active transport?Uses pre-established ion gradients to drive movement of other solutes (symport/antiport)
2. What is the key physiological roles?Nutrient absorption, waste removal, neurotransmission, cellular energy maintenance, hormone secretion
3. What is active transport in our cells?Active transport is when cells use energy to move molecules against a concentration or electrical gradient, like moving stuff uphill instead of downhill.
4. How does the sodium-potassium pump help our body?The sodium-potassium pump uses ATP to push three sodium ions out of the cell and two potassium ions in, creating a steep gradient that keeps nerves and muscles working.

Electrochemical Gradient: The combined influence of concentration and electrical charge differences across a membrane.
Transporter Proteins: Proteins embedded in cell membranes that facilitate the movement of specific molecules or ions.
Homeostasis: The maintenance of a stable internal environment within an organism.