Module 7-8 Flashcards
Which enzyme unwraps the double helix?
Helicase
RNA is double stranded. (T/f)
False
The DNA polymerase that replicates the parental strand of DNA reads the parental DNA from 5’ to 3’ and makes a new DNA strand from 3’ to 5’. (T/f)
False
Assume you have a eukaryotic cell with three chromosomes within it. How many 5’ ends would there be?
Gap1: 6; gap2: 12
In DNA, what does the nucleotide labeled A pair with?
T (thymine)
Which strand is produced more rapidly?
Leading strand
In the lagging strand, the DNA is read from the parental DNA’s 3’ to 5’ end. (T/f)
True
Strands of the backbone of DNA are parallel. (T/f)
False
In the ribosome, what is the name of the bond that links one amino acid to the next?
Peptide bond
During mRNA maturation what is the name of the part of the mRNA that is removed?
Intron
Replication of DNA is semi- conservative? (T/f)
True
During DNA replication in the lagging strand there is production of this component?
A) Okazaki fragment
B) mRNA
C) tRNA
D) proteins
D) None of the above
Okazaki fragment
During DNA replication errors are greatly reduced by enzymes that proof read the newly replicated DNA. (T/f)
True
In the ribosome, what pairs with codon?
Anti-codon
The double helix of DNA is wrapped around 1 3/4 times around which of these components?
A) helicase
B) DNA polymerase Ill
C) DNA polymerase l
D) nucleosome
E) DNA ligase
nucleosome
Protein synthesis changes from the language of _____ to the language of ______
Nucleotides, amino acids
For DNA polymerase lll to work, which component has to work first?
A) conservative replication
B) newly replicated strand
C) primase
D) RNA
E) mutation rate
primase
How many hydrogen bonds are there between an A and its paired nucleotide?
2
Which sugar is present in RNA?
Ribose
DNA replication in eukaryotes is sped up by multiple origins of replication. (T/f)
True
RNA synthesis, also called RNA transcription occurs in three phases. List them from beginning to end in order
Initiation, elongation, termination
Uridine is a nucleotide in DNA. (T/f)
False
List one type of post-translational modification
Phosphorylation
List the two basic categories of nitrogenous bases in nuclei acids
Purines and pyrimidines
In eukaryotic cells the start codon for protein synthesis is
Methionine (AUG)
Which nucleotide is different in RNA compared to DNA?
Uridine
There are two types of protein synthesis in eukaryotic cells. These two types can be distinguished because the polyribosome is either _______ or _________
Free; membrane bound
How many “stop” codons exist?
Three
The genetic code for the conversion of mRNA codons to proteins has redundancy. (T/f)
True
Which enzyme is used first to permit DNA polymerase Ill to begin replicating the 3’ strand?
A) conservative replication
B) parental strand
C) primase
D) RNA
E) mutation rate
Primase
Draw the sugar in DNA and label the carbons as discussed in the lecture. Then circle the carbon that is different in RNA.
…
The antenna system is in the ______ membranes
Thylakoid
List three items required for photosynthesis to occur
Water, CO2, light
The light reactions produce ________ and ______ and this process also results in the release of _______
ATP, NADPH+H+, oxygen
The most abundant protein in the world is called
Rubisco
The Calvin-Benson cycle takes in ______ and ________ from the light reaction and also _______ ________ to make carbonyorates
ATP, NADPH+H+, carbon dioxide
