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BME 235 Midterm 1 Quizzes & LOs questions with 100- correct answers(100- accuracy).
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BME 235 Midterm 1 Quizzes & LOs questions with 100- correct answers(100- accuracy).
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BME 235 Midterm 1 Quizzes& LOs questions with 100%
correct answers(100%
accuracy)
generation of protein from mRNA is called - answer translation
regulate the generation of mRNA from DNA - answer epigenetic
transcriptional regulation
T/F: In the heterochomatin state genes are typically highly expressed. -
answer F
the net effect of a histone acetyl transferase acting on a histone tail is
following (select all that apply):
a. acetyl groups are removed from a histone tail
b. acetyl groups are added to a histone tail
c. the net charge of the histone tails becomes less positive
d. the net charge of the histone tails becomes more positive
e. transcription of nearby genes increases - answer b, c
T/F: An intron is a region of DNA that contains protein coding sequence -
answer F
Experimental anaylsis of the histone modifications adjacent to a specific
gene reveals that the histones are highly acetylated. The following are
likely to be true (select all that apply):
a. the gene is actively transcribed
b. the gene is not actively transcribed
, c. the chromatin adjacent to the gene is in the euchromatin state
d. the chromatin adjacent to the gene is in the heterochromatic state -
answer a, c
T/F: MicroRNAs bind directly to regulate their expression - answer T
T/F: Transcription factors bind histone proteins to regulate gene
expression - answer T
Packaging of proteins in secretory vesicles occurs in the:
a. ribosome
b. golgi apparatus
c. nucleus
d. mitochondria
e. endoplasmic reticulum - answer b
Insulin is a signaling molecule generated by the pancreas that signals
liver, fat, and skeletal muscle cells to release insulin. As such, the action
of insulin is an example of:
a. autocrine signaling
b. endocrine signaling
c. contact-dependent signaling
d. paracrine signaling - answer b
T/F: A protein phosphotase is an ezyme that adds a phosphate group to a
protein - answer F
a global kinase inhibitor (i.e. one that acts on all protein kinases) would
inhibit the downstream signaling associated with the following ligand-
triggered cell surface receptors (select all that apply):
a. G-protein coupled receptor
b. ion-channel coupled receptor
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