7th Grade Science
Please check daily for homework and other important information.
Homework assignments:
11/26/2007
Homework:Monday: Write a story using Chapter 17, Section 3 vocabulary words.
Tuesday: Complete textbook page 506, Section Assessment 1-7.
Wednesday: Study for Section 3 test for tomorrow.
Thursday: Study for test tomorrow/ Study Guide/Chapter Reivew.
Located below are the study guides for Chapter 2, Section 3. Please go over daily with your child. Also, place the questions on flash cards. That way, as it gets closer to LEAP and/or iLEAP, you will have a great study tool.
7th Grade Science- Unit 1
Study Guide
Moving Cellular Materials
Chapter 3, Section 2
1. What is osmosis?
2. How does osmosis explain the fact that a watery syrup forms when you put sugar on strawberries?
3. a. How are glcose molescule moved into a cell?
b. What types of transport is this?
4. a. What are vesicles?
b. What happens to a vesicle in exocytosis?
t. What is a selectively permeable membrane?
Directions: Use the words in the list to fill in the blanks in the paragraphs below.
endocytosis passive active permeable diffusion exocytosis osmosis
5. Cells have selectively _________ membranes. Some molescules can pass through, but others can't. Movement through a cell memrane wthout using energy is ________________ transport. ____________________ is passive transport that moves particles aways fromareas with more particles into areas with fewer particles inorder to spread them out. Diffusion of water in and out of cells is called_______________________. Large aprticles may need to use energy to pass through cell membranes. This is called _________________ transport. _____________uses energy to take particles into a cell. _______________________ releases aprticles out of a cell.
Discussion Questions
What needs to be transported through your cells' membranes?
