WorksheetPremium

Training Inside a Swimmer's Muscle Cells

Grade 6 cell model practice: training study data and a red blood cell salt test show how mitochondria, membrane, nucleus and chloroplasts work together.

Grade 6ScienceInteractive · Printable

Aligned toMS-LS1-2

Buy this worksheet: $1.50

Or unlock every Premium worksheet with Premium

PrintUnlock to print

Answer keyUnlock to see answers

Assign to classUnlock to assign with a class code

What’s included

Single worksheet
Auto-graded online
1 NGSS standard
Printable answer key
12 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 6
Subject: Science
Question types: Fill in the blank, Multiple choice, Matching, Circle the answer, Short answer

About this worksheet

What students practice

Students analyze training data to explain how mitochondria supply energy to muscle cells.
Students use a salt-water test to explain how the cell membrane controls what enters and leaves a cell.
Students model how chloroplasts, membrane, mitochondria and nucleus work together to power movement.

How to use

Read paragraphs 1 to 3 and the study table together. After Part 3, have pairs trace the path of energy from a spinach leaf to a swimmer's arm before writing the open response.

Curriculum

NGSS standard covered

MS-LS1-2

Model how the parts of a cell, such as the nucleus, cell membrane, chloroplasts and mitochondria, work together.

Preview

OwlSheets.com

Name Date

Training Inside a Swimmer's Muscle Cells

Use a training study and a membrane test to model how cell parts work together.

Part 1: The training study

Read the passage and the study table, then answer the questions.

What Changes When You Train?

1Imani Castellano, a sixth grader, swims the 400 m and 800 m freestyle for the Northshore Aquatics club. Her coach, Birgit Sandoval, often tells the team that long races depend on what happens inside their muscle cells, not only on strong lungs and a strong heart. To show what she means, she shared a summary of a university study.

2In the study, 30 adult volunteers who did not exercise regularly were split into three groups of 10. The endurance group swam steady laps for 45 minutes, four days a week. The sprint group swam short, very fast sprints with rests in between, also four days a week. The third group did not train. Before and after 10 weeks, a doctor took a tiny sample of shoulder muscle from each volunteer. Scientists counted the mitochondria in a slice of muscle cells of the same size each time. They also measured how far each volunteer could swim in 12 minutes.

3Coach Sandoval reminded the team how a muscle cell gets the energy to contract. Sugar from digested food and oxygen from the lungs travel to the muscles in the blood. The cell membrane controls what enters and leaves the cell. Mitochondria use oxygen to release the energy stored in sugar. The nucleus holds the instructions the cell follows to build its parts, including new mitochondria.

4The food energy itself starts in plants. In the cells of plant leaves, chloroplasts use light energy to make sugar from carbon dioxide and water. Imani's usual dinner before a meet is pasta made from wheat, with a side of spinach.