If DNA were a positively charged rather than negatively charged, what change to the gel electrophoresis procedure must be made?
A. DNA must be loaded at the positive pole rather than at the negative pole.
B. Migration time of restriction fragments must be increased.
C. Type of buffer used must be basic rather than neutral.
D. All of the choices are correct.
Answer: A
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Environmental genomics is sometimes called metagenomics.
Answer the following statement true (T) or false (F)
Blood pressure is the measure of pressure in a large artery and is recorded as two numbers (120/80). These numbers stand for the pressure
A. while the heart is contracting over the pressure while the heart is relaxed. B. while the subject is exercising over the pressure while at rest. C. while the heart is relaxed over the pressure while the heart is contracting. D. in the pulmonary system over the pressure in the systemic system.
Genes A and B are on the same chromosome. What gametes could an individual with the allele combination AABB produce?
a)AABB b)A c)AB d)B e)AAB
DNP is a chemical that has been used by people to lose weight. However, it is a dangerous option and has caused several people to die. DNP works in a fashion similar to that of brown fat. Based on this information, how would DNP cause weight loss and
death? A) DNP must prevent food from being consumed aerobically, so cells instead perform fermentation, and lactate buildup is deadly. B) DNP must increase the rate of substrate-level phosphorylation, causing NADH to be produced more quickly than it can be used by the electron transport chain. C) DNP must block cells from using fats and proteins to make ATP. D) DNP must increase metabolism of food by producing heat instead of ATP.