Photosynthesis and respiration both play a major role in the ____ carbon cycle, and can affect atmospheric CO2 levels on a seasonal or annual basis
Fill in the blank with the appropriate word.
short-term
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Most allergy medicines contain antihistamines that block the actions of histamine. These drugs reduce cold symptoms by directly
A. lysing virus-infected cells and preventing further propagation of the pathogen. B. stimulating components of the immune system through the release of cytokines. C. blocking or reducing the inflammation response in mucous membranes. D. stimulating the production of specific antibodies. E. recruiting macrophages to the nasal epithelium.
From the following, identify that portion of the brain that is NOT considered part of the limbic system
a. amygdala b. olfactory bulbs c. cerebellum d. hippocampus e. “emotional brain”
The presence of a transit sequence directs a protein from the ________ to the ________
A) cytosol; mitochondrion or chloroplast B) endoplasmic reticulum; Golgi apparatus C) cytosol; plasma membrane D) endoplasmic reticulum; nucleus E) signal recognition particle; nucleus
Why is the following reaction considered to be dehydration synthesis? H-NH3C2O-OH + H-NH3C2O-OH ® H-NH3C2O- NH3C2O-OH + H-OH
A. Water molecules are hidden in the products H-NH3C2O-NH3C2O-OH. B. This is the same reaction that occurs during digestion and water is required. C. Water molecules are formed as a result of the breakdown of H-NH3C2O-NH3C2O-OH. D. Water molecules are formed as a new, more complex end product is formed.