Which of the following are functions of proteins? Choose all correct answers. A. short term energy storage
B. transport
C. build channels in cell membranes
D. speed up reactions
E. structure

Acell in the human nervous system whose primary function is to form myelin and the blood-brain barrier, respond to injury, remove debris, and enhance learning and memory is called a(n) cell.

During binary fission, what events must occur before the cell splits into two new cells?

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.