Anaerobic bacteria often play important roles in bioremediation. Which of the following is not an electron acceptor used by anaerobes during biodegradation reactions?

#Question id: 4081

#Unit 3. Fundamental Processes

Which of the following regulatory scenarios of cell-type-specific expression of fibronectin isoforms in humans is (are) consistent with information on known splicing factors?

a. A Tra-like splicing factor expressed in fibroblasts is required for inclusion of EIIIA and EIIIB exons.

b. An Sxl-like splicing factor is required in hepatocytes for exclusion of EIIIA and EIIIB exons.

c. A Tra-2-like factor enhances binding of the cleavage/polyadenylation complex in fibroblasts.

d. A Dsx-like protein is required to inhibit transcription of the fibronectin gene.

#Question id: 28470

#Unit 5. Developmental Biology

blastomere of a 2-cell embryo can form both trophoblast cells and the embryo precursor cells of the ICM, these very early cells are said to be___.

#Question id: 5767

#Unit 8. Inheritance Biology

 An enzyme that repairs thymine dimers in visible light in E. coli

#Question id: 12211

#Unit 7. System Physiology – Animal

#Question id: 5050

#Unit 5. Developmental Biology

A stem cell capable of producing all the cell types of a lineage(embryonic and extraembryonic) is said to be-