Question and answer
Vaccines prevent disease by A. bringing bacteria to infect healthy cells. B. containing specific T lymphocytes. C. combining with pathogens to inactivate them. D. preparing the immune system to recognize and destroy pathogens.
Vaccines are effective in preventing disease because they prepare the immune system to recognize and destroy pathogens.
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Asked 7/20/2016 5:48:01 PM
Updated 7/20/2016 6:15:05 PM
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This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [7/20/2016 6:15:05 PM]
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Mendel experimented with garden peas. One of the traits he looked at was texture of the pea coat. If we said the pea coat was smooth what are we looking at? A. genotype B. phenotype C. chromosomes D. alleles
Weegy: Mendel experimented with garden peas. One of the traits he looked at was texture of the pea coat. If we said the pea coat was smooth what are we looking at phenotype. (More)
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Updated 7/20/2016 12:49:12 PM
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As a cell gets larger, its surface area to volume ratio A. stays the same. B. increases. C. decreases. D. becomes zero.
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Updated 7/17/2016 9:59:32 PM
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As a cell gets larger, its surface area to volume ratio decreases.

Added 7/17/2016 9:59:32 PM
This answer has been confirmed as correct and helpful.
Confirmed by selymi [7/18/2016 3:03:36 AM]
How do organisms store and use energy? A. by changing oxygen into organic compounds B. by taking electrons from an electron transport chain C. by making and breaking the chemical bonds in organic compounds D. by transferring energy through the process of homeostasis
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Updated 11/5/2016 8:42:36 AM
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Organisms store and use energy by making and breaking the chemical bonds in organic compounds.

Added 11/5/2016 8:42:36 AM
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The sides of the DNA molecule, the rails of the ladder, are composed of A. phosphates only. B. nitrogenous bases only. C. phosphates and sugars. D. nitrogenous bases and sugars.
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Updated 7/17/2016 6:01:32 PM
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