Mammals should have an even number of chromosomes
Indicate whether the statement is true or false
True
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Place in correct order the following steps in the process of appositional growth of cartilage
a: New matrix is produced and secreted. b: Chondrocytes differentiate, each in its own lacuna. c: Stem cells undergo mitosis. d: Committed cells differentiate into chondroblasts. A. c. - d. - a. - b. B. d. - c. - b. - a. C. c. - d. - b. - a. D. a. - c. - b. - d. E. a. - c. - d. - b.
The MHC (major histocompatibility complex) class molecules
A. are found in the nucleus of cells. B. allow the immune system to respond to antigens inside cells. C. are only found on B cells. D. are lipoproteins on cell surfaces. E. do not attach to plasma membranes.
Regulatory proteins are degraded outside of lysosomes by binding to ________ and then broken down by the proteasome.
A. lysosomes B. ribosomes C. chaperones D. ubiquitin
What do skeletal and cardiac muscle cells share in common?
A) multinucleate cells B) branched cells C) intercalated discs situated between cells D) striations