The genetic code is redundant. This means that there is more than one codon that codes foe each amino acid. A silent mutation would result when the mRNA sequence before and after the mutation produced a different codon that both coded for the same amino acid.
Answer the following statement(s) true (T) or false (F)
Answer : True
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As you recall, a single enzyme molecule may catalyze a reaction many times. In signal transduction
pathways, which may utilize several enzymes, the result is _________.
a. amplification of the final product b. denaturation of non-essential proteins c. hydrolysis of signal molecules d. transformational modification of the receptor e. change in cell membrane permeability
Monozygotic twins:a
occur when two eggs are ovulated. b. may be of different sexes. c. have different sets of genes. d. are called identical twins. e. result from the fertilization of two sperm cells.
Polyunsaturated fats ____.
A. have fewer hydrogen atoms than do saturated fats B. are more characteristic of animal fats than plant fats C. have no double bonds D. are solid at room temperature E. are gas at room temperature
Which of the following carbohydrate is seen only in animals?
a. starch b. cellulose c. glycogen