Transcriptional regulation in eukaryotic cells requires the coordinated action of many proteins that interact with one another and with DNA sequences near the gene
A. true
B. false
A
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Why do photosynthetic microbial mats assemble in the way they do (in terms of green bacteria, purple bacteria, cyanobacteria, and sulfate reducers)? Be sure to explain why the species assemble in the order they do (from top to bottom) and why the layers of different species may be more or less thick compared to others.
What will be an ideal response?
Platelets in mammals are functionally the same as ____ in other vertebrates
a. neutrophils b. eosinophils c. thrombocytes d. monocytes e. lymphocytes
How can you explain that an adult who had chicken pox, is now at risk of the shingles infection if you know that both diseases are caused by the same virus?
a. This is the same thing as the latent period of an active infection. b. This is akin to the attachment phase of replication. c. This is something that occurs during the lytic cycle. d. The virus has been lying dormant inside the cells for some time and can begin reproducing again later. e. This could never occur.
Mitochondria differ from chloroplasts in that mitochondria
A) convert light energy from the sun to chemical energy, whereas chloroplasts convert one form of chemical energy to another. B) contain three different membrane-bound compartments, whereas chloroplasts contain two. C) contain membrane folds called cristae, whereas chloroplasts contain disklike vesicles in stacks called grana. D) are not found in plants, whereas chloroplasts are not found in animals.