Current analysis indicates that less than 2% of the human genome codes for proteins. Based on the systems approach employed by the ENCODE project, what percentage of the genome is estimated to be transcribed at some point in at least one cell type?

#Question id: 12645

#Unit 6. System Physiology – Plant

#Question id: 4501

#Unit 3. Fundamental Processes

According to Models of termination: torpedo and allosteric, which one is now the favored and why;

A. The Rat1 enzyme is very processive and quickly degrades the RNA in a 5’ -to-3’ direction, until it catches up to the still-transcribing polymerase from which the RNA is being spewed.

B. Termination depends on a conformational change in the elongating polymerase that reduces the processivity of the enzyme leading to spontaneous termination soon afterward.

#Question id: 839

#Unit 1. Molecules and their Interaction Relevant to Biology

How do chaperons identifies unfolded/partially folded protein?

#Question id: 32

#Unit 1. Molecules and their Interaction Relevant to Biology

 Humans maintain a nearly constant level of hemoglobin by continually synthesizing and degrading it. This is an example of a(n):

#Question id: 4708

#Unit 11. Evolution and Behavior

The following questions refer to the figure below, which shows an outcrop of sedimentary rock whose strata are labeled A-D. If x indicates the fossils of two closely related species, neither of which is extinct, then their remains may be found in how many of these strata?