Which of the following processes produces different proteins in different cells from the same primary transcript?
A. combinatorial control
B. alternative splicing
C. RNA editing
B,C
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There should be a strong positive correlation between the rate of protein synthesis and _____
A) the quantity of DNA polymerase B) the quantity of RNA polymerase C) the size of mRNA D) the number of ribosomes
The ultimate source of energy trapped during photosynthesis is
(a) CO2. (b) H2O. (c) O2. (d) sunlight.
What allows fetal hemoglobin to remove oxygen from maternal hemoglobin?
A. Fetal hemoglobin has an extra heme group. B. Oxygen is more soluble in fetal blood than maternal blood. C. Fetal hemoglobin has a higher affinity for oxygen than does maternal hemoglobin. D. Fetal blood contains twice as many hemoglobin molecules than maternal blood. E. Fetal hemoglobin molecules are much larger than maternal hemoglobin molecules.
Product recalls on frozen hamburger are not uncommon during any given year. The meatpacking industry can experience problems when processing centers accidentally introduce this fecal bacterium into ground meat. Which organism is commonly found to be the
culprit? A) Clostridium B) E. coli C) Staphylococcus D) Streptococcus