Your liver produces 90% of the cholesterol found in your body. When cholesterol levels get too high, the first enzyme in the pathway of cholesterol synthesis is inhibited. This is an example of:
A. Denaturation
B. Equilibrium
C. Feedback inhibition
D. A coenzyme
E. Positive feedback
C. Feedback inhibition
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Recent discoveries of microscopic fossils have extended the known history of life to about:
A. 1 billion years ago. B. 2 billion years ago. C. 3.5 billion years ago. D. 4.5 billion years ago.
Explain how electroporation works and the significance of the procedure for genetic experiments
What will be an ideal response?
Nucleic acid sequencing methods are based on:
a. the ability of two nucleic acid strands that have complementary base sequences to bond specifically with each other and form a double-stranded molecule. b. detecting phenotypic traits not detectable by conventional strategies. c. the principles of complementary nucleic acid hybridization with those of nucleic acid replication. d. determining the exact nucleotide sequence of a gene or gene fragment obtained from an organism.
Mutations that result in the death of the individual are known as ____
a. beneficial b. lethal c. random d. spontaneous e. neutral