Which of the following reactions is catalyzed by a ribozyme?
A. Attachment of amino acid to transfer RNA
B. Last step in electron transport chain (reduction of O2 to form H2O)
C. Peptide bond formation during protein synthesis
D. First reaction in glycolysis (phosphorylation of glucose)
Answer: C
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Beginning around 1930, the ________ [two words] developed as a reformulation of Darwinian natural selection based on the ways in which knowledge in genetics has informed us about heredity
Fill in the blank(s) with correct word
Analysis of a patient's lung tumor reveals that all of the malignant cells in this tumor have a specific chromosomal abnormality involving a fusion event between two sets of chromosomes. This MOST likely suggests that
a) This mutation was inherited. b) The tumor is polyclonal. c) The tumor is monoclonal in origin. d) A large number of normal cells simultaneously underwent this mutation.
All of the following are abiotic factors, except
A. light. B. minerals. C. water. D. atmospheric gases. E. an animal carcass.
Which of the following statements is false?
(a) Cytochalasins prevent actin polymerization. (b) Actin filaments are usually excluded from the cell cortex. (c) Integrins are transmembrane proteins that can bind to the extracellular matrix. (d) ARPs can promote the formation of branched actin filaments.