Answer the following questions true (T) or false (F)
1. A "nutritional" calorie is actually 1,000 of the energy unit calories.
2. Soy protein and nearly all animal protein sources provide all the essential amino acids needed in the diet.
3. Fiber is defined as a complex carbohydrate that is digestible.
1. TRUE
2. TRUE
3. FALSE
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In your microbiology lab, your class is identifying bacteria. You are using dichotomous keys to aid in the identification process using the data from a variety of biochemical tests. What problems do you foresee in this procedure?
A. If you misread a biochemical test or write down the wrong result, the key will likely take you to an alternative organism that is not your unknown bacterium. B. Dichotomous keys are too sophisticated to read properly, so you are worried that there will be a large degree of error in your identification. C. The dichotomous key does not contain information on your bacterium. D. Dichotomous keys are not valid for identification.
A good sampling method for quantifying the density of birds or bats is the use of
A. mist nets. B. line transects. C. pitfall traps. D. baited live traps. E. quadrats.
Cells are constantly manipulating their DNA and histone proteins to regulate
A. gene expression. B. mutation formation. C. crossing-over. D. segregation.
__________________ isolating mechanisms include hybrid mortality and hybrid infertility.
a) Postzygotic b) Sympatric c) Prezygotic d) Barrier e) Environmental