In gel electrophoresis, DNA fragments migrate toward the negative pole of the electric field
A. true
B. false
B
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What is the effect of stress on a population?
a. Plants compete less with each other in stressful environments. b. Plants compete more with each other in a stressful environments. c. Only abiotic factors contribute to environmental stress. d. Stressful environments brought about by humans do not affect populations. e. Stressful environments brought about by nature do not affect populations.
What plant group has the largest number of living species?
A. Seedless, nonvascular plants B. Cone-bearing plants C. Flowering plants D. Seedless vascular plants
You are classifying an organism and trying to determine to which domain it belongs. The organism is unicellular and was isolated from a very unusual environment. This organism probably belongs in which domain?
A) Eukarya B) Archaea C) Bacteria D) None of the domains above is correct.
The mathematical expression for the change in free energy of a system is ?G =?H - T?S. Which of the following is (are) correct?
A) ?S is the change in enthalpy, a measure of randomness. B) ?H is the change in entropy, the energy available to do work. C) ?G is the change in free energy. D) T is the temperature in degrees Celsius.