Define X-rays
What will be an ideal response?
Electromagnetic radiation that can pass through living tissue.
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Compared with skeletal muscle, which of the following is not true of smooth muscle?
A. There is one nucleus per cell. B. There are no striations. C. There are no Z discs. D. It has an ability to regenerate through mitosis. E. There are more T tubules.
Explain the process by which smell sensations are sensed and perceived
What will be an ideal response
During DNA replication,
A) the DNA double helix comes apart where hydrogen bonds join base pairs, and new nucleotides are brought in, forming two double helices. B) two single strands of DNA come together, restoring complementary base pairing. C) amino acids are joined. D) tRNAs bring specific amino acids to an mRNA molecule.
The ability of the kidney to concentrate urine depends on
A. a high medullary concentration gradient. B. proximal convoluted tubule reabsorption. C. a low medullary concentration gradient. D. rapid removal of filtrate. E. osmosis.