7th grade Life Science questions:
- Are bones alive?
- What two substances comprise the bone matrix?
- True or False: Bones increase or decrease their mass as needed.
Are you smarter than a 7th grader?
If you’ve studied the 7th grade Apologia textbook, Exploring Creation with General Science, you know the answers to these questions!
Are bones alive? Yes, your bones are composed of living cells. Bone continually changes to meet your body’s needs.
What two substances comprise the bone matrix? Collagen and minerals. Collagen is a flexible substance that belongs to a class of chemicals known as proteins. Minerals are substances found naturally in the earth. Collagen and minerals work together to make bones both strong and flexible. The collagen gives bones their flexibility; the minerals give bones their hardness.
True or False: Bones increase or decrease their mass as needed. True. Bones that bear weight must be firm. So, if you exercise, your bones will be stressed and will respond by increasing their mass to become more firm. If you are inactive, bone tissue will be taken away.
Now! We’re all at least as smart as the 7th graders who’ve studied this book!
I’m getting the exercise my bones need now, but I still have a lot to learn about the minerals. Calcium is only one of the minerals my bones need.
What have you learned? Care to share? I’d love to hear from you. Email or comment and tell me what you’ve added to your diet to help your bones. Thanks!