Which of the following types of mutation would convert a proto-oncogene into an oncogene?
A) a mutation that blocks transcription of the proto-oncogene
B) a mutation that creates an unstable proto-oncogene mRNA
C) a mutation that greatly increases the amount of the proto-oncogene protein
D) a deletion of most of the proto-oncogene coding sequence
C
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Which of the following is an adaptation against
predation?
a. thorns b. camouflage c. mimicry d. tough, chewy leaves e. all of these
Microorganisms were inoculated on two agar plates and incubated for 24 hours. After incubation, no microbial colonies were seen on the spread plate agar, but three microbial colonies were seen in the pour plate agar. What may account for this observation and how can growth of this microorganism be enhanced?
What will be an ideal response?
Which of the following is true regarding the tRNA structure?
A) The anticodon is found at the 3? end of the tRNA molecule. B) An amino acid binds to the 5? end of the tRNA molecule. C) A tRNA molecule that has an amino acid attached to it is called a charged tRNA. D) The tRNA binds to an mRNA's codon at the variable loop. E) The nucleotides found in a tRNA molecule can only be adenine, uracil, guanine, and cytosine.
The total magnification using a 10X ocular and a 100X objective would be (110/1000/10000)×. (Be sure your answer is a numeral.)
Fill in the blank(s) with the appropriate word(s).