Which of the following statements is correct?
A) The simpler the organism, the less DNA it has.
B) The more complex the organism, the higher the percentage of the non-coding DNA.
C) The more complex the organism, the more DNA it has.
D) The simpler the organism, the lower the percentage of the non-coding DNA.
Answer: B
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The accepted explanation for the disappearance of the dinosaurs is _____
a. the result of an asteroid impact b. the loss of food sources c. competition by mammals d. gas emissions from volcanoes e. giant tsunamis caused by earthquakes
In a DNA molecule, the bases are covalently bonded to each other.
Indicate whether the statement is true or false.
Imagine that you are conducting an experiment on a yeast enzyme known as sucrase. This enzyme is used by yeast cells to break down the disaccharide sucrose into the monosaccharides glucose and fructose. What type of reaction is this?
A) Metergonic B) Endergonic C) Exergonic D) Spontaneous
If a child belonged to blood type O, he or she could not have been produced by which set of parents?
a. A and B b. A and O c. AB and O d. O and O