A single "turn" of the Krebs cycle involves three different decarboxylation reactions.
a. true
b. false
b. false
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Clostridium tetani in deep puncture wounds can cause the disease ________ in humans.
Fill in the blank(s) with the appropriate word(s).
You have been assigned to conduct a scientific study on the effects of four types of fertilizer on broccoli growth. You visit several broccoli farms to make observations and use these observations to find preliminary correlations and form hypotheses. To test your hypotheses, you set up five plots of broccoli - one plot for each fertilizer type plus a control plot, which is not fertilized. When you meet with your professor to discuss your progress, he tells you that your project is missing an important component of the scientific method. What is missing?
A. Testing biotic factors such as herbivore abundance B. Replicating each fertilizer treatment in multiple plots C. Using more than one plant species so your conclusions can be more broadly applied D. Testing the fertilizer in a natural setting on wild relatives of broccoli E. Setting up plots that receive more than one type of fertilizer
In multiple sclerosis, a victim:a
loses coordination due to the replacement of myelin with scar tissue. b. accumulates neurofibrillary tangles in the brain resulting in dementia. c. suffers tremors due to overly rapid and spontaneous firing of neural impulses. d. is unable to transmit neural impulses because poisons interfere with the action of the ion pumps. e. suffers depression due to abnormal secretion of neurotransmitters
The overall function of meiosis includes all of the following EXCEPT
A. gamete production B. reduction of chromosome number (from 2N to N) C. providing genetic variation in sexually reproducing organisms D. growth of the overall individual