What is the difference between red marrow and yellow marrow?

What will be an ideal response?


Red marrow is found in the interior of some flat bones such as hip and rib bones. Red marrow is the
primary source of new red blood cells. Yellow marrow is found in the shaft of long bones such as the
femur. Yellow marrow is a type of adipose tissue and is a source for some white blood cells.

Biology & Microbiology

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Mammalian sex determination is controlled by

A) XIST. B) SRY. C) XIC. D) All of these E) None of these

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In both stems and leaves, photosynthetic tissues lie beneath the __________

a. cortex b. periderm c. pith d. epidermis e. sclerenchyma.

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Because most receptors are membrane proteins, which of the following is usually true?

A) They lead to changes in intracellular ion concentration. B) They open and close in response to protein signals. C) They are only attached to one membrane surface: exterior or interior. D) They preferentially bind with lipid or glycolipid signal molecules. E) They change their conformation after binding with signal polypeptides.

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Boa constrictors on an island are an example of a(n)

A. organ. B. ecosystem. C. cell. D. organism. E. population.

Biology & Microbiology