lacI codes for a(n) ________, and when lacI is mutated, the lac operon is ________
A) structural gene; never expressed
B) repressor; constitutively expressed
C) repressor; never expressed
D) activator; never expressed
E) activator; constitutively expressed
Answer: B
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The glucose that enters glycolysis is split into two molecules of _______.
a) pyruvate b) NADH c) phosphate d) ATP
Which of the following is not one of the four classes of organic molecules found in cells?
A. carbohydrates B. vitamins C. proteins D. nucleic acids E. lipids
Which of the following statements about symbiotic relationships are true? (Check all that apply.)A) Plant-pollinator interaction is classified as a good example of mutualism.B) Both mutualisms and commensalisms result from the process of coevolution.C) It is sometimes difficult to determine if a specific relationship is mutualism, commensalism, or parasitism.D) Parasites can sometimes influence the behavior of their hosts to facilitate completion of their life cycles.E) Mutualists sometimes become parasites.
What will be an ideal response?
A person carrying one gene for sickle-cell hemoglobin will be resistant to Plasmodium infection.
Answer the following statement true (T) or false (F)