Neurons rely on glial cells for

a. protection.
b. metabolic support.
c. insulation.
d. All of the above


Answer: d. All of the above

Biology & Microbiology

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You have recently identified a novel protein and obtained its sequence. How could you use this sequence to predict the function of the protein?

A. By looking for conserved domains. B. By using the sequence to make antibodies against the protein. C. By determining the secondary structure of the protein. D. By determining the DNA sequence that could encode the protein.

Biology & Microbiology

You are working in a cancer lab and are interested in identifying some genes that are important in the onset of lung cancer. You have several genes you think may be involved, so you "print" spots of the DNA sequences of interest on a microarray slide. After doing this, you isolate mRNA from both normal lung cells and cancerous lung cells. Before you use these mRNAs to probe the microarray slide, you need to

A. sequence the mRNA. B. make cDNA and amplify the cDNA using PCR. C. clone each mRNA into a BAC vector. D. amplify the mRNA using PCR. E. add reverse transcriptase and fluorescent nucleotides to the mRNA to make cDNA.

Biology & Microbiology

Saltatory conduction is a term applied to the "jumping" movement of action potentials

A. across electrical synapses. B. along the postsynaptic membrane from dendrite to axon hillock. C. in two directions at the same time. D. from one neuron to another. E. along myelinated axons.

Biology & Microbiology

You conduct a dihybrid cross. A ________ ratio would make you suspect that the genes are linked

A) 3:1 B) 1:1:1:1 C) 12:1:1:4 D) 9:3:3:1

Biology & Microbiology