Cells form a ________ arrangement when cells in a chain snap back upon each other forming a row of cells oriented side by side.
Fill in the blank(s) with the appropriate word(s).
palisade; palisading
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The amino acids valine and threonine differ only by the presence of a hydroxyl group or a methyl group
The aminoacyl-tRNA synthetases for tRNAVal and tRNAThr must discriminate between using these two very structurally similar amino acids as substrate for creating charged tRNAs. The discrimination by the Valyl-tRNA synthetase is by differential binding of valine and/or threonine to a first site on the synthetase and, then, differential binding to a second site on the synthetase. This is an example of what known process in the specificity of tRNA synthetases? A. adenylation B. kinetic proofreading C. wobble D. premature termination E. accommodation
The genes a, b, and c are different genes that reside on the same chromosome. Genes a and b are 10 cM apart, b and c are 2 cM apart, and a and c are 8 cM apart. What is the order of these genes?
A: A: a, c, b B: The order cannot be determined from the information given. C: a, b, c D: b, a, c E: c, a, b
Why does FADH2 yield less ATP than NADH?
a. FADH2 electrons ultimately do not go to oxygen. b. FADH2 electrons enter the electron transport chain at a lower energy level. c. FADH2 binds directly to the ATP synthase enzyme. d. Electrons from FADH2 cannot pump hydrogen ions out of the cell.
In prokaryotes what is the cellular location of the electron transport chain and ATP synthase complexes?
A) Plasma membrane. B) Cytosol. C) Inner mitochondrial membrane. D) Endoplasmic reticulum. E) Ribosome.