Show:
Junc-tions in the trunk
DNA structure
True or False
Gene expression
Fill in the blank
100
Cell junctions between adjacent cells the prevent leakage of material?
What are tight junctions?
100
Single ring bases: Uracil, Thymine, and Cytosine.
What are pyrimadines?
100
The complementary strand in DNA of 5' - GCGGATTT - 3' is 3' - TTTAGGCG - 5'
FALSE 3' - CGCCTAAA - 5'
100
Created in ribosomes after translation is complete.
What is a polypeptide?
100
__________ and _________ are protein strands in tight junctions that help prevent leakage
Occludin and Claudin
200
Two cell junctions ONLY found in PLANTS
What is the middle lamella and the plasmodesmata
200
Determined the base pairing between purines and pyrimadines
Who is Erwin Chargraff?
200
Integrins are CAMS that connect cell-to-cell
False -They are CAMS but they connect cell to ECM
200
The 3 things that assemble together to start translation in the cytosol.
What are mRNA, tRNA, and ribosomal subunits?
200
In nucleotides, the nitrogenous base is attached to the ________ sugar and the phosphate group is attached to the _________ sugar
1', 5'
300
A type of cell adhesion molecule (CAM) that needs calcium to function as cell-to-cell adhesion
What are Cadherins?
300
A type of bond in DNA where the phosphate group links 2 sugars.
What is a phosphodiester bond?
300
DNA primase covalently links nucleotides in a 5' to 3' direction
False - DNA Polymerase 3
300
The enzyme used in transcription that attaches to DNA, forms an open complex and synthesizes RNA.
What is RNA Polymerase?
300
Before ________________ can begin synthesis on a bare template, a ___________,small segments of DNA, are needed.
DNA polymerase 3, primer
400
Similar to the plasmodesmata in plants, allows small molecules and ions passage between cells.
What are gap junctions?
400
Part of the nucleotide that attaches to the 5' carbon sugar.
What is a phosphate group?
400
In RNA processing, the spliceosome removes exons using snRNPs.
False- introns are removed (are only needed for transcription)
400
In transcription, the part of the DNA that allows stigma factor and RNA polymerase to bind.
What is a promoter?
400
In translation, the ribosome travels in a _________ to __________ direction and synthesizes a _____________.
5', 3', polypeptide
500
The most abundant polysaccharide in the ECM, unbranched with a repeating disaccharide unit.
What are glyclosaminoglycans (GAGS)?
500
A type of ENZYME that attaches many copies of a DNA repeat sequence to the ends of chromosomes.
What is Telomerase?
500
tRNA uses a codon to attach itself to mRNA in the Ribosome
False uses an anticodon
500
Part of matured mRNA that is needed to exit nucleus and bind to ribosome
What is 5' capping (a modified guanosine)
500
In RNA processing, ______________ are removed precisely by sliceosome (composed of snRNPs) and _____________ are covalently spliced together.
Intron, Exon