Which of the following are inactivated by
ricin?
a. proteins
b. ribosomes
c. DNA
d. transcription factors
e. mRNA
B
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Answer the following statements true (T) or false (F)
1. Cells can sense changes in the environment through alterations in the extracellular matrix. 2. Wrinkling observed with aging is due to increased production of the extracellular matrix molecule, collagen. 3. Blood vessels that can expand and contract contain a lot of collagen as a structural extracellular matrix protein. 4. Glycosaminoglycans and proteoglycans resist compression and are found in large abundance in joints of the body.
Abraham Lincoln’s son, Robert, showed no signs of Marfan syndrome
a. True b. False
The similarity in the behavior of identical twins, even if separated at birth, is evidence that behavior is due to environmental influences.
Answer the following statement true (T) or false (F)
Used for the demonstration of mycobacteria:
a) PAS b) Wartin-Starry c) both d) neither