Cell Structure and Function
Grade 7 · Science · Cells and Body Systems · Maryland, USA
Lesson Summary
Learn the parts of a cell and what each one does to keep the cell alive.
Explanation
Every living thing is made of cells. Plant and animal cells share many structures, including the cell membrane (controls what enters and exits), the nucleus (contains DNA and directs the cell), mitochondria (produce energy), and the cytoplasm (gel-like fluid that holds everything in place). Plant cells also have a cell wall for support and chloroplasts for photosynthesis. Each part has a specific job, and together they keep the cell functioning.
Practice Questions
Q1: What is the function of the mitochondria?
Answer: Mitochondria convert nutrients into energy (ATP) that the cell can use, which is why they are called the powerhouses of the cell.
Q2: Name two structures found in plant cells but not in animal cells.
Answer: The cell wall (provides rigid support) and chloroplasts (carry out photosynthesis).
Q3: What role does the cell membrane play?
Answer: The cell membrane controls what enters and exits the cell, protecting the interior while allowing necessary substances to pass through.
People Also Ask
What is Cell Structure and Function in Grade 7 Science?+
Cell Structure and Function is a lesson in the Cells and Body Systems chapter of Grade 7 Science. It is part of the Maryland, USA school curriculum and covers key concepts that students need to understand at this level.
What grade level covers Cell Structure and Function?+
Cell Structure and Function is taught in Grade 7 as part of the Science curriculum in Maryland, USA.
How can I help my child with Cells and Body Systems in Science?+
Start with the lesson summary and explanation on this page. Practice the questions provided, then use TutorTom for personalized, step-by-step help with Cells and Body Systems topics.