In fibrous connective tissue, the proteins that make up the fibers of the tissue are secreted by ________.
Fill in the blank(s) with the appropriate word(s).
Answer: fibroblasts
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Which of the following is not one of the four most abundant elements in the body?
a. carbon b. hydrogen c. oxygen d. nitrogen e. calcium
What is the role of the SRY gene in humans?
A. None of the answers is correct. B. It is located on the Y chromosome and initiates the developmental pathway toward the male phenotype. C. It is located on the X chromosome and causes the X to pair with the Y chromosome during male meiosis. D. It is located on an autosomal chromosome and represses expression of autosomal genes in order to balance their expression level with genes on the X chromosome. E. It initiates the X inactivation process in females.
One of the ways smooth endoplasmic reticulum (ER) differs from rough endoplasmic reticulum is that rough ER is covered by
a. the extracellular matrix. b. the Golgi apparatus. c. ribosomes. d. the cytoskeleton. e. mitochondria.
How many bones are in the human body?
A) 203 B) 300 C) 308 D) 206