QUESTION 3
What is the purpose of chromatin-remodeling enzymes in human cells?
The enzymes control the rate of translation of an mRNA transcript
The enzymes add phosphate or methyl groups to histone tails
The enzymes slide nucleosomes farther apart or closer to each other
The enzymes send damaged proteins to the proteasome for degradation
The enzymes cause DNA looping to occur
QUESTION 10
If you can drink milk as an adult, it means that you have inherited a mutation in the an enhancer for your lactase gene (the gene that encodes the enzyme you need to break down lactose). Predict the effect of this mutation:
The mutation changes the number of domains in the enzyme, which makes it work more efficiently
The mutation changes the amino acid sequence of the lactase protein
The mutation increases the number of copies of the lactase gene that will be found in your genome
The mutation changes whether the lactase sequence is found in an intron or exon
The mutation affects the expression of the lactase gene
QUESTION 12
What determines where in the genome a transcription regulator will bind?
Transcription regulators bind to the 5' UTR region of a gene
Regulators bind via complementary base-pairing to certain DNA molecules
Covalent bonds form between the transcription regulator and the atoms of the DNA backbone
Every eukaryotic gene has a different transcription regulator that will bind to the 5' end of the gene
Transcription regulators bind to specific DNA sequences via multiple weak non-covalent interactions
QUESTION 15
What is the histone code used for?
Phosphorylation and acetylation of DNA affect its ability to be compacted
Changes to the sequence of DNA change whether DNA will wrap around histone proteins
Covalent modifications of histones affect the ability of the transcription initiation complex to form
Histones provide the codon sequences needed for translation to occur
The histone code affects which amino acids will get added to a polypeptide
QUESTION 3
What is the purpose of chromatin-remodeling enzymes in human cells?
The enzymes control the rate of translation of an mRNA transcript | |||||||||||||||||||||||||||||||||||||||||||||||
The enzymes add phosphate or methyl groups to histone tails | |||||||||||||||||||||||||||||||||||||||||||||||
The enzymes slide nucleosomes farther apart or closer to each other | |||||||||||||||||||||||||||||||||||||||||||||||
The enzymes send damaged proteins to the proteasome for degradation | |||||||||||||||||||||||||||||||||||||||||||||||
The enzymes cause DNA looping to occur QUESTION 10 If you can drink milk as an adult, it means that you have inherited a mutation in the an enhancer for your lactase gene (the gene that encodes the enzyme you need to break down lactose). Predict the effect of this mutation:
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