Which of the following steps in prokaryotic binary fission is INCORRECT?
A. DNA is replicated bidirectionally from a
single point on the circular chromosome.
B. The two replicated chromosomes remain
attached to the plasma membrane.
C. The cell continues to grow outward
symmetrically, separating the two
chromosomes.
D. Cell wall material is laid down at the
midpoint to separate the two daughter cells.
E. Construction of the plasma membrane and
cell wall separates the two daughter cells.
D
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Which of the following accounts for why eukaryotic cells are typically much larger than prokaryotic cells?
A. Since eukaryotic cells have more DNA, their cell volume has to be larger. B. A eukaryotic nucleus is so large that the cell has to be bigger. C. Reproducing sexually requires the cells to be larger. D. Using molecular motors, eukaryotic cells can transport materials throughout their cytoplasm much faster than prokaryotic cells can, which have to rely on simple diffusion. E. None of the answers options is correct..
Which of the following statements are true of the stomata on the leaves of vascular plants?
_____ They regulate intake of carbon dioxide needed for photosynthesis. _____ They regulate release of oxygen to the air. _____ They regulate loss of water. _____ They are able to open or close depending on environmental conditions. _____ They regulate the absorption of light by chlorophyll.
What is a simple definition of an allele?
What will be an ideal response?
Put the terms in the correct order from the heart to the body and back to the heart.
A. venules ? arterioles ? capillaries ? veins ? arteries B. veins ? venules ? capillaries ? veins ? arteries C. arteries ? arterioles ? capillaries ? venules ? veins D. arteries ? venules ? veins ? arterioles ? capillaries