Compare and contrast DNA synthesis in prokaryotes and eukaryotes. What will be an ideal response?
The process of DNA replication in prokaryotes and eukaryotes is basically similar. The
principal differences result from differences in the structure and size of the prokaryotic and
eukaryotic chromosomes. Prokaryotic chromosomes are circular and relatively small;
consequently there is only one origin of replication (and two replication forks). Eukaryotic
chromosomes are linear and relatively long; consequently there are multiple origins of
replication and multiple replication forks.
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Unlike pinnipeds, sirenians are completely free from the terrestrial environment
Indicate whether the statement is true or false
When using a microscope to view cells you obtained from scraping under your fingernails, you notice that the cells lack nuclei; therefore, you conclude that the cells must be a type of ________ cell
A) plant B) eukaryotic C) fungal D) prokaryotic
Your brain is a structure composed of different kinds of tissue. What is this kind of structure called?
a) organ system b) cell c) tissue d) organ
Humans rely on fossil fuels for much of our energy needs. The burning of fossil fuels adds carbon dioxide (CO2) to the carbon dioxide already in the atmosphere. How do plants help keep some of this extra carbon dioxide from accumulating in the atmosphere?
A) Plants store carbon dioxide in their tissues. B) Plants return carbon dioxide to the ground through their roots. C) Plants take in atmospheric carbon dioxide to produce food. D) Plants break down carbon dioxide into carbon and oxygen.