3 years ago

What rigid structure surrounds a plant cell membrane and provides support to the cell?

Biology

1 answer:

d1i1m1o1n [39]3 years ago

3 0

Cell wall...but it also works in conjunction with the Vacuoles to support the cell and keep it rigid

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Which of the following was originally used to measure bone density?

Alexus [3.1K]

X-rays used to measure bone density.

Explanation:

The bones density test measured by the X-rays, it measures the content of calcium and other bone minerals that are packed into the segment of bone. Most commonly used parts of bone for testing are spine, hip, occasionally and the forearm. It is generally done to know the chances of osteoporosis. More the bone minerals, more will be density. More density means the higher bone strength. Before the test, a person should avoid having calcium supplement.

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3 years ago

The hardest known mineral is _____. topaz talc diamond graphite

RoseWind [281]

Hi there, thanks for asking a question here on Brainly!

The hardest known mineral in this planet is the diamond.

Answer: Letter C ✅

Hope that helps! ★ If you have further questions about this question or need more help, feel free to comment below or post another question and send the link to me. -UnicornFudge aka Nadia