The enzyme _____ prevents chromosomes from shortening at the tips after each round of DNA replication
A. DNA polymerase.
B. telomerase.
C. topoisomerase II.
D. DNA ligase.
E. DNA replicase
B
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Genomic studies of marine microorganisms has revealed that a considerable amount of the photosynthesis in the ocean is based on photopigments called proteorhodopsins.
Answer the following statement true (T) or false (F)
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What will be an ideal response?
The most significant finding from the "split brain" patients studied by Roger Sperry and his collaborators was that
A. to evaluate the functional capacity of each hemisphere in split-brain patients, it is essential to provide information to one side of the brain only. B. in most human brains, the left hemisphere is specialized for processing verbal and symbolic material; the right hemisphere is specialized for visuospatial and emotional processing. C. the severing of the corpus callosum is a necessary and effective remedy for halting grand mal seizures in epilepsy. D. the right and left hemispheres are mirror images of each other and equally dominant in producing and understanding language in humans.
Which was responsible for destruction of the ozone layer?
a. chlorofluorocarbons b. carbon dioxide c. methylmercury d. methane e. nitrogen