Normal genes that code for proteins that act in cell division are ____________________. Fill in the blank(s) with the appropriate word(s)
ANSWER: proto-oncogenes
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Methanogens may contribute to the greenhouse effect and global warming due to methane production.
Answer the following statement true (T) or false (F)
Which of the following is least likely to be preserved as a fossil?
A. an organ like an eye or lung B. a bone or shell C. an organism that died on land D. a complete large organism E. a leaf or stem
Tacrolimus (FK-506) is a drug that inhibits an enzyme called calcineurin. Calcineurin is a protein phosphatase. This is an enzyme that dephosphorylates (removes phosphate groups) from proteins. When added to cells, tacrolimus can inhibit the dephosphorylation of a protein called NFAT, but it cannot prevent the dephosphorylation of a protein called CDK1. What is the most likely explanation for this finding?
A. Calcineurin requires an additional cofactor to dephosphorylate NFAT B. Tacrolimus changes the optimum pH for calcineurin C. NFAT is a substrate of calcineurin, but CDK1 is not D. Tacrolimus is a competitive inhibitor of calcineurin for NFAT and CDK11
Stack of chlorophyll-containing thylakoids in a chloroplast.
What will be an ideal response?