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QUESTION 9 A nucleotide does NOT contain a phosphate a nitrogenous base a sugar a lipid QUESTION 10 Which of the 3 parts of a nucleotide creates the actual DNA code, and can either be A, T, C, or G? nitrogenous base 5-carbon sugar phosphate nucleic acid QUESTION 11 Which molecule contains an anticodon? mRNA DNA RNA tRNA
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Which of the following is NOT a direct consequence of the fact that DNA polymerase can only build onto the end of an existing nucleic acid?
Question 6 options:
DNA replication requires primers | |
Bits of DNA are lost from the ends of your chromosomes in each successive round of replication | |
RNA is involved in DNA replication | |
The enzyme "primase" is needed for DNA replication | |
There are multiple origins of replication on each eukaryotic chromosome |
How does a nucleotide sequence code for a protein in nearly all living organisms?
Question 7 options:
a sequence of 3 nucleotides can code for one of 64 different amino acids | |
a sequence of 2 nucleotides can code for one of 64 different amino acids | |
a sequence of 2 nucleotides can code for one of 20 different amino acids | |
a sequence of 3 nucleotides can code for one of 20 different amino acids | |
a sequence of 3 nucleotides can code for 3 different amino acids |
Fill in the blanks. To make one strand of DNA, _________ monomers are linked together in a chain, forming a polymer we call a(n) ________ .
Question 8 options:
nitrogenous bases, hydrogen bond | |
nucleotide, nucleic acid | |
amino acid, nucleic acid | |
nucleotide, nitrogenous base | |
amino acid, protein |
Which of the following was NOT part of the ideas that Darwin used in his book On the Origin of Species?
Question 9 options:
organisms vary in characteristics that affect survival and reproduction | |
variation in traits is often heritable | |
descent with modification explains life's unity and life's diversity | |
organisms inherit characteristics from their parents that the parents acquired in their own lifetimes | |
natural selection is a cause of adaptive evolution |
Here is a hypothetical mRNA sequence:
5' G G A U G C U A G U A U G A 3'
What is the amino acid sequence encoded by this mRNA?
Question 10 options:
Met-Ile-Val | |
Asp-Ala-Ser-Met | |
Met-Leu-Val | |
Ser-Met-Ile-Val | |
Gly-Cys |
Which of the following is the best characterization of the reading frame in gene expression?
Question 5 options:
The reading frame of a gene is set by the first three nucleotides in a gene's promoter. | |||||||||||||||||||||
Every gene has three possible reading frames, but all three specify the same protein. | |||||||||||||||||||||
Every gene has three possible reading frames, and thus encodes three different proteins. | |||||||||||||||||||||
The reading frame of a gene is set by the first three nucleotides at the 5' end of the mRNA. | |||||||||||||||||||||
The reading frame of a gene is set by the first AUG codon near the 5' end of the mRNA. Which of the following is/are NOT involved in initiating transcription in eukaryotes? Question 9 options:
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